
SAME Perspectives: Collaborative Delivery Federal Policy Recommendation
An analysis of current USACE, NAVFAC, and AFCEC construction contracting methods and the integration of collaborative delivery models.
Society of American Military Engineers, May 2025
Executive Summary
Objective
The objective of this report is to investigate collaborative delivery contract models used by both private sector owners and non-federal public owners, and to identify industry best practices for collaborative delivery contracts that, if adopted by the government, may have significant benefits to federal agencies in meeting their Military Construction (MILCON) and Civil Works (CW) mission requirements.
Background
The Society of American Military Engineers (SAME) and the Construction Community of Interest (CCOI) chartered a Collaborative Delivery Working Group to investigate collaborative delivery methods used by industry to determine if these methods would be of benefit to United States Army Corps of Engineers (USACE), Naval Facilities Engineering Systems Command (NAVFAC), and Air Force Civil Engineer Center (AFCEC) in executing their construction programs. The CCOI Working Group for Collaborative Delivery focused on collaborative delivery contracting types, specifically contracts involving Qualifications-Based Selection (QBS) and negotiated pricing for construction that optimize the use of Early Contractor Involvement (ECI).
Findings
The CCOI found that new contracting tools are needed to meet unprecedented mission requirements. In addition to their annual MILCON and CW programs, USACE has been tasked with delivering massive disaster recovery and resiliency programs. NAVFAC and Air Force are also now delivering extensive programs for the recapitalization of our nation’s public shipyards and ballistic missile facilities.
The CCOI found that private sector and non-federal public sector owners using collaborative delivery experienced significant benefits with collaborative delivery methods in providing better risk management, better cost and schedule certainty, and better results in accomplishing desired project outcomes.
The CCOI found that, due to statutory restrictions, USACE, NAVFAC, and AFCEC are not able to use collaborative delivery methods for construction contracting that are considered best-practices in industry. The CCOI agreed that USACE, NAVFAC, and AFCEC need new acquisition tools for construction contracting to allow them to gain the same benefits demonstrated in the private sector and by non-federal public agencies enabling them to better meet their mission requirements.
The CCOI found that collaborative delivery methods are culturally different from traditional delivery methods in that the focus for collaborative delivery is on “designing to build” as opposed to “designing to bid.” A change in culture is needed where all stakeholders, led by the owner, are working collaboratively together to meet the project objectives.
Recommendations
We recommend that USACE, NAVFAC, and AFCEC (collectively the “Services”) consider the limitations of traditional construction contracts and recognize the benefits of collaborative delivery contracts which prescribe QBS, negotiated pricing for construction and early contractor involvement. We also recommend that the Services seek authority to use collaborative delivery contracting methods.
Construction Community of Interest Working Group for Collaborative Delivery
Industry Members

Timothy Hess, P.E., Kiewit Infrastructure Company

Angie Martinez, P.E., Martinez Construction Service

Sam Barnett,
iParametrics, LLC

Curt Haldeman, P.E., Granite Construction Company

Bob Leonetti, The Lane Construction Corporation

Matthew Beverly, P.E., AECOM Corporation

Desiree Gilani, Kiewit Infrastructure Company

Louis Jenny, Design-Build Institute of America

Richard Sloop, Jr., P.E., Fluor Corporation

Rob Biedermann, Society of American Military Engineers
Table of Contents
Background
The United States has long understood that a well-funded and fully equipped military is vital to protecting and advancing American interests while preserving our Nation’s strength and defending our national interests. The U.S. continues to provide for our Nation’s national security and maintain our economic competitiveness by investing significant resources in our national defense and critical infrastructure including federally owned physical systems, and assets vital to our military services. The incapacity or destruction of such systems and assets would have a debilitating impact on national security and public health and safety. Billions of dollars are appropriated and invested each year via MILCON for Army, Navy, Marine Corps, Air Force and Space Force bases; and CW infrastructure throughout our country. These military bases and CW infrastructure are necessary to allow the U.S. to compete economically and project power throughout the world, thus protecting U.S. interests worldwide.
Construction for MILCON and CW is executed through USACE, NAVFAC, and AFCEC. These Services have been tasked with delivering their annual infrastructure programs as well as new massive programs over the last decade such as:
- The Navy Shipyard Infrastructure Optimization Program. Navy has provided preliminary estimates for the SIOP to be over $21B with final costs for infrastructure and equipment optimization expected to exceed $30B. 1
- The Air Force Sentinel Program. Air Force has estimated the Sentinel Program at $140B with the infrastructure requirement possibly exceeding $30B.2
- The Army CW Disaster Recovery and Resiliency Programs. The Army Corps of Engineers has been provided over $37B in supplemental funding over the last five years for Disaster Recovery and Resiliency projects in addition to their annual CW programs. 3
USACE, NAVFAC and AFCEC all contract for both construction and design through procurement methods defined in the Federal Acquisition Regulation (FAR). Acquisition strategies, delivery methods, and contract types must stay within the framework outlined in FAR as well as specific statutory codes applicable to MILCON and CW. Federal agencies such as USACE, NAVFAC, and AFCEC are required by law to use competitive pricing in accordance with the Competition in Contracting Act of 19844 and other federal statutes for construction contracting thus restricting available contracting types to competitively priced contracts.
Given the statutory competitive pricing restrictions and the limited number of contract types available to USACE, NAVFAC, and AFCEC, the Services are unable to use contract types, delivery methods and selection procedures that both private sector owners and non-federal public agencies have been using for decades, specifically Progressive Design-Build (PDB), Construction Manager At-Risk (CMAR), and Construction Manager/General Contractor (CM/GC). While USACE, NAVFAC, and AFCEC have used design-build as a collaborative delivery method with success, they need additional acquisition tools to effectively deliver their annual MILCON and CW programs as well as the massive new programs such as the SIOP, Sentinel, and CW Disaster Recovery/Resiliency programs they have been tasked with delivering.
Government Program Shift
Army, Navy, and Air Force MILCON programs have grown significantly during the last decade due to recapitalization and modernization of shipyards, bases, and airfields, many which have not been re-capitalized since they were built decades ago.
- Multi-billion-dollar MILCON and CW projects used to be rare, but are now common.
- The SIOP projects for re-capitalization of the four public shipyards range in construction costs from $2B to $10B. The U.S. Navy has never seen infrastructure projects of this magnitude until recently.
- Under the Sentinel Program, the U.S. Air Force will modernize existing launch facilities, missile alert facilities, communication systems, infrastructure, and technologies necessary to replace 450 Minuteman III ICBMs with the new Sentinel ICBM.
- USACE CW Disaster and Resiliency projects have been increasing every year due to the greater frequency and severity of disaster-related events.
These new requirements are in addition to annual MILCON and CW program requirements. The magnitude of these new requirements to rebuild our nation’s infrastructure far exceeds what we have asked Army, Navy, and Air Force to deliver using traditional contracting methods. Traditional delivery models such as Design-Bid-Build (DBB) are simply not adequate to meet these new requirements.
The infrastructure delivery requirements placed on the Services today are not only massive programs with unprecedented funding, but are also comprised of large, complex, and technically difficult projects. Traditional delivery methods that are selected primarily, or even partially, on low-price are often not the best option for these complex projects the Services are seeing today.
Traditional delivery methods based on competitive pricing limit agencies from obtaining the outcomes they desire for schedule and cost certainty.5 The traditional delivery method process takes more time than the process for collaborative delivery methods and has a higher potential for change orders and conflict due to not integrating the design and construction and the lack of early contractor involvement. Traditional methods often result in mistakes discovered late in project development where the costs to make changes or corrections are greatest. Both NAVFAC and USACE officials face significant challenges with cost growth and schedule delays on MILCON projects and need new contracting tools to help them meet these challenges.6
Things are changing
- MILCON and CW programs have significantly increased over the last several years
- Multi-billion dollar projects for USACE, NAVFAC and AFCEC used to be rare – they are now common
- Agencies are struggling to meet the vast increase in workload
Figure 1. Programs are growing in size and complexity
Why Collaborative Delivery
USACE, NAVFAC and AFCEC need a delivery method that provides:
- Better risk management
- Early Contractor Involvement (ECI)
- Integration of the Designer and Builder
- Cost and schedule certainty
- Reduced project durations
- Reduced change orders, claims, disputes, and litigation
Collaborative delivery, also referred to as alternative delivery methods, are contract models involving QBS selection and negotiated pricing for construction. Collaborative delivery methods have been widely used in the private sector for decades and include design-build (DB), PDB, CM/GC and CMAR. They optimize Early Contractor Involvement (ECI) by allowing for integrated design and construction where the owner, design-builder, and other stakeholders are working together toward a common goal from the very beginning of the project. This allows risk to be addressed early in the process. It also allows for early scope alignment and the collaborative development of cost and schedule. This type of collaborative approach results in the ability to develop accurate, well-informed cost and schedule estimates at the beginning of construction and early cost and schedule certainty.
Traditional contracting methods currently available to federal agencies such as Design-Bid-Build (DBB) do not allow for early stakeholder involvement where the ability to influence innovation, cost, and schedule is the greatest. Federal agencies need contracting methods that maximize constructability input and collaboration.
Collaborative delivery methods are culturally different from traditional methods in that the focus for collaborative delivery is on “designing to build” as opposed to “designing to bid.” A change in culture is needed where all stakeholders, led by the owner, are working collaboratively together to meet the project objectives.
Challenges
Work isn’t getting done
Traditional delivery methods often do not allow federal agencies to reach their preferred contractors
Agencies cannot afford low bid for large complex projects – the cost of risk is too expensive
Agencies need price certainty – using traditional delivery methods they rarely get it
Too many reprogramming actions – which are causing project delays
Too many change orders, claims, and disputes – more collaboration is needed
Agencies are not getting the schedule certainty they need using traditional delivery methods
Figure 2. Challenges
Current Statutory Authorities
Current authorities only allow for traditional delivery models for construction contracting which require competitive pricing as opposed to QBS and negotiated pricing. This limitation precludes the use of collaborative delivery methods widely used in the private sector and by non-federal public agencies. Specifically, MILCON and CW contract types are restricted by the following federal statutes:
- Competition in Contracting Act of 1984 which requires each agency to:
- Evaluate bids and proposals solely on the basis of factors specified in the solicitation; and
- Award contracts to the bidder or offeror whose bid or proposal is most advantageous to the Government, considering the price and other factors.
- 10 U.S.C. 3206(c)(1)(B) and 41 U.S.C. 3306 – Planning and Solicitation: Price or cost to the Government shall be evaluated in every source selection.7
- 10 U.S.C. 3241 – Design-build Selection Procedures: Submit two-phase competitive proposals that include technical proposals and cost or price information.8
- 10 U.S.C. 3323 – Cost-plus Contracting prohibited for military construction.9
- FAR 36.209 – No contract for the construction of a project shall be awarded to the firm that designed the project or its subsidiaries or affiliates.10
- 40 U.S.C. 1101 AE Selection Procedures – The Government shall publicly announce all requirements for architect-engineer services and negotiate contracts for these services based on the demonstrated competence and qualifications of prospective contractors to perform the services at fair and reasonable prices.11
- Selection procedures such as Sealed Bidding (FAR Part 1412) Low Bid, Contracting by Negotiation (FAR Part 1513) using the Best-Value continuum of Low Price Technically Acceptable (LPTA) to, Best-Value Trade-off (BVTO), and Two-Phase Design Build Procedures (FAR 36.314) are currently available for use by federal agencies. These selection procedures, however, can only be used in Design-Bid-Build and Traditional-Design-Build contract types and preclude the use of collaborative delivery models such as Progressive Design Build (PDB) and Construction Manager/General Contractor (CM/GC) contract types. The Brooks Act (1972), now 40 USC 1101, narrows the parameters even further by prohibiting one company from entirely designing and then building a project.
So WHY don’t they use it?
Federal Law only allows for competitive pricing for construction.
Federal Law prohibits one company to both entirely design and build a project.
Figure 3: Current Federal Law
Contracting methods available to most federal agencies for construction contracting transfer most of the risk to the contractor with the Government paying the contractor for this risk transfer. While traditional methods are often acceptable for non-complex, traditional, mid-size projects with typical risk profiles, they are often not the optimum solution for complex mega-projects with long durations. The cost of risk paid by the government is simply too expensive and the government cannot afford the cost of the risk transfer to the contractor for these mega-projects. A different risk management strategy is needed that allows for better risk-sharing and overall reduction of costs and project durations.
Given the increase in program requirements, program sizes, and risk, federal agencies are struggling to meet the vast increase in contracting workload. Traditional contracting methods, combined with the inability to scale agency staff levels in proportion to the growing contracting workload, have placed increased strain on Department of Defense (DoD) construction agencies. Since significantly increasing the size of the government workforce is not supported by elected officials, more effective contracting methods are urgently needed. DoD construction agencies need more acquisition tools in their toolbox, specifically tools that would allow for better risk sharing, less changes during construction, reduced construction durations, and cost certainty.
Small Business Programs
Small businesses have also been affected by the current contracting structures. They often lack internal functions, such as an in-house legal team, to fully evaluate common risk sharing practices, such as requests for equitable adjustments or claims. Traditional delivery methods, where most of the risk is transferred to the contractor, discourage small businesses from entering and/or staying in the federal space given the inherently higher risk to the contractor. This risk, even on a small project, can be a barrier to a small business and, unfortunately, one “bad project” can often put a small business out of business. As a result, although the total funding allocated to small businesses continues to grow, the number of individual small businesses serving as prime contractors for federal contracts has been steadily declining.
Construction contracting tools that allow the government to negotiate price with a small business are needed to help reverse the trend. The government currently has authority to select 8(a) small businesses based on qualifications and negotiate construction pricing. This practice has proven to be very successful in both risk sharing and reducing risk for both the government and small businesses, resulting in more small businesses entering the federal space as prime contractors. It is important to note that, other than the Section 8(a) program small businesses based on qualifications and negotiate construction pricing. This practice has proven to be very successful in both risk sharing and reducing risk for both the government and small businesses, resulting in more small businesses entering the federal space as prime contractors. It is important to note that, other than the Section 8(a) program,15 authorities available to federal agencies require competitive pricing as a selection criteria for all business from small to large.
While FAR Part 15 provides for negotiated construction contracts, it does not explicitly allow for QBS and negotiated pricing for construction contracts. Federal agencies need authorities to allow them to use QBS and negotiated pricing where they determine it is in the best interest of the government and best supports their program and the goals of federal small business programs.
Collaborative delivery contracts such as PDB allow a small-business prime contractor to work together with the owner to produce beneficial solutions for the project. It is also more efficient with subcontractors during the proposal phase. In this model the prime small business has the benefit of knowing the time invested in the proposal process will eventually lead to a contract as opposed to competitively bidding which is often won by the team who provided the cheapest price and “missed the most” in the scope. The time and labor that a small business expends in negotiating with the government will not only help them better meet the project objectives but will also help the small business to build expertise and capability.
Industry Best Practices
Private sector owners have found that construction delivery methods allowing for collaboration among the owner, the designer, and the builder, throughout the entire life of the project, result in greater project success.16 Collaborative delivery models function in such fashion, providing all stakeholders “a seat at the table” through the entire project duration to facilitate collaboration and best meet the project goals.
Collaborative delivery methods integrate the owner, designer, and builder into one team where all stakeholders are working toward a common objective. A one-team collaborative approach has shown superior results when compared to traditional delivery methods where the owner, designer, and contractor are separate teams. Studies have shown that, regardless of the collaborative delivery method selected, “projects delivered through design-build perform far better in terms of cost, quality and schedule than those using design-bid-build.” 17
Collaborative delivery models address the challenges federal agencies are seeing today. Private sector and non-federal public owners have seen significant benefits from collaborative delivery contracting models. One of the most significant benefits is cost and schedule certainty. Given the collaborative process originates at the beginning of project development, the owner, designer, and builder are working together to incorporate project objectives early. This early involvement from all stakeholders contributes to cost, schedule, and scope alignment. When combined with negotiated pricing, changes are incorporated in the design phase which tends to significantly reduce the number of changes that occur throughout construction. This ensures greater cost and schedule certainty at the time of awarding the construction contract.
Both private sector and public sector owners have found that collaborative delivery models provide better management and sharing of risk resulting in reduced costs.18 Traditional delivery methods transfer most of the risk to the contractor, which the Government pays for. Sharing risk through collaborative delivery significantly reduces the overall risk costs to the owner.

Figure 4. A Collaborative Team Effort
Private sector owners typically prefer to select design-build teams primarily based on qualifications. Owners prefer QBS for design-build contracts because it allows them to select a contractor based on their qualifications and expertise rather than the lowest bid, allowing for a streamlined process.19 Owners have found huge advantages in selecting the team that will develop the best, most valuable solutions for the design and construction of the project within budget and schedule constraints. This enables owners to collaborate with contractors they believe are best suited to meet project objectives, rather than selecting contractors primarily or partially based on the lowest bid.20 Federal agencies have found QBS to be extremely effective in architectural & engineering (A/E) contracting. Private sector and non-federal public agencies have found similar results with QBS for construction and DB contracts.
Federal agencies need additional tools in their contracting and programs toolbox to meet these new challenges. Collaborative delivery methods can provide federal agencies new contracting tools they currently lack such as PDB and CM/GC, which will allow agencies to more effectively leverage and partner with industry to meet their program goals.
Current contracting models available to USACE, NAVFAC, and AFCEC do not allow the use of collaborative contracting models used by the private sector and non-federal public agencies. Private sector owners choose collaborative delivery methods for the vast majority of their projects in water, wastewater, oil, gas, and chemical industrial sectors because those methods provide the quality, cost, and schedule outcomes they desire. Collaborative delivery models are widely considered a best practice for meeting owner objectives, aligning scope, and establishing cost and schedule certainty early in the project.
Collaborative Delivery for Non-Federal Public Agencies
Non-federal public agencies have been using collaborative delivery with great success. Collaborative delivery methods are proven as a best practice and the method of choice for large complex projects where cost and schedule certainty are paramount. Table 1 highlights several mega-projects where public owners have chosen collaborative delivery methods.
Unlike many non-federal public agencies, USACE, NAVFAC, and AFCEC do not have the clear and explicit statutory authority needed for QBS and negotiated construction pricing, which would be required for CM/GC, PDB and other collaborative delivery methods. However, other federal agencies and non-federal public agencies have received and are using QBS and negotiated pricing for construction projects.
- Congress provided all 50 State DOTs the authority in 2012 to use QBS and negotiated construction pricing for federally funded State DOT highway projects. 21
- FHWA received authority in the Infrastructure Invest and Jobs Act (IIJA) Transportation Authorization in 2021 to use QBS and negotiated construction pricing for FAR-based federal construction contracts.22
- US Virgin Islands received authority in 2023 to use QBS and negotiated construction pricing for the $20B FEMA funded Rebuild USVI Program.23
- FAA received approval for the use of QBS and negotiated construction pricing to deliver the $8B Regional Airport Upgrade program included in the IIJA.24

Figure 5. Innovation & Cost Savings with Early Contractor Involvement
Table 1. Collaborative Delivery-Build Agency Usage
Owner | Project | Contract Type |
---|---|---|
Alabama Department of Transportation | $3B Mobile River Bridge and Bayway Project | PDB |
Ohio Department of Transportation and Kentucky Transportation Cabinet | $3.6B Brent Spence Bridge | PDB |
Maryland Transportation Authority | $2B Francis Scott Key Bridge | PDB |
U.S. Virgin Islands | $20B FEMA Rebuild USVI Program | PDB |
Amtrak | $6B Frederick Douglas Tunnel | CMAR |
Amtrak | $3B Susquehanna River Bridge | CMAR |
Amtrak | $2B Sawtooth River Bridge | CMAR |
Michigan Department of Transportation | $330M I-94 Marshall Modernization Project | PDB |
Washington Metro Area Transit Authority | $300M WMATA L-Line Steel Tunnel Rehabilitation | PDB |
Appendix A provides a list of additional projects where public agencies chose collaborative delivery as their preferred delivery method.

Figure 6: Early Contractor Involvement (ECI) Makes a Difference
Collaborative Delivery Contract Models
Design-Build
Design-build (DB) contracts have been used in the U.S. for decades with positive results for both owners and design-builders. FMI Consulting estimates design-build will account for 47% of construction spending in 2026.25 Design-build contracting has steadily grown over the last 30 years as both owners and builders alike have seen its benefits as compared to traditional project delivery methods. The Design-Build Institute of America (DBIA) research has determined that design-build contracting provides:26
- Higher quality project outcomes
- Collaboration that drives innovation
- Faster, more cost-effective project delivery
- Fewer changes, fewer claims and less litigation
- Allocation of risk to those who can best manage it
- Earlier knowledge of firm costs
Design-build contracts have two widely used versions:
Two-Step Best Value Design-build. A Two-Phase procurement process first identifies the most highly qualified design-builders then seeks design and cost proposals. The Owner selects the design-builder offering the Best-Value proposal – a combination of design, project approach and contract price.
Progressive Design-build. The design-builder is selected primarily on the basis of qualifications. After selection, the Owner and design-builder collaborate to progressively advance the design and cost model toward a mutually agreeable design concept and contract price.27
The Two-Phase, Best-Value design-build model has been used for decades. In 1998, the Construction Industry Institute (CII) published a report titled, “A Comparison of U.S. Project Delivery Systems.” This report “benchmarked the performance of DBB, CMAR and DB projects. The report examined data from over 350 projects of varying size, sector, complexity and location that were completed in the mid-1990s. The analysis revealed that DB projects outperformed DBB in terms of unit cost, cost and schedule growth, and all metrics relating to the speed of delivery.”28

Figure 7: Collaborative Delivery Benefits
The 1998 CII report was updated in 2018 with a new sample of 212 projects which were then compared to the original sample set of 350 projects. The results showed that: “After 20 years, DB projects are still delivered faster and with greater reliability in cost and schedule performance.” 29
Progressive Design-Build
Experienced private sector owners, as well as many public sector owners, have chosen the progressive design-build (PDB) model as their preferred delivery model when they “want to work collaboratively with the design-build team to develop a design and implement construction means and methods that best meet the project’s goals. Recognizing the benefits of having the best team working on their behalf, experienced design-build Owners typically select design-build teams primarily on qualifications and other indications that the selected team will develop the best, most valuable solutions for the design and construction of the project.” 30
During phase one of a PDB model, owners collaboratively work with the design-build team to verify and align the project’s schedule, scope, and budget based on the most accurate information available. This results in a realistic estimate of the project’s schedule, scope and budget based on input from both the owner and design-builder. “PDB’s primary benefits are the increased transparency and collaboration that follow the open book pricing process.”31
During the second phase, the owner and design-build team continue to work collaboratively together to develop the project design and construct the project to meet the objectives determined during phase one.
Cost estimates and schedule updates are continually provided allowing the owner to make informed decisions early in the process where impacts from changes are minimal.
Once the design has advanced enough to allow for definitization of the project, the design-builder will provide a formal proposal for the construction of the project to include the construction cost and schedule. The owner and the design-builder then negotiate the proposal to come to agreement on the terms of the contract for scope, schedule, and price. Once an agreement has been reached, the parties enter into either a contract amendment for construction or a second contract for construction.
If the owner and design-builder cannot reach agreement on the final contract terms, the owner may then consider an “off-ramp” provision where it terminates the negotiations with the design-builder and moves ahead with the project through another contract strategy. If the owner and the design-builder agree on the final contract terms for a contract, they will enter into a fixed-price contract that includes the project’s final price, final scope, and final schedule.
PDB can serve as another “tool in the toolbox” for owners to help in reducing construction delays due to claims, changes, disputes, and litigation.32 Also, a significant advantage of PDB and integrated-design-and-construction-DB is the ability to reduce the overall project schedule by combining the design and construction phases. Concurrent design and construction by a design-builder provides the owner the ability to significantly reduce schedule duration without increasing cost.
The Design-Build Institute of America (DBIA) has determined that, as a result of the deep collaboration between all parties, PDB contracts tend to be more reliable, and the project goals are more likely to be achieved.33 Both private-sector and public-sector owners have chosen PDB for their largest and most complex projects.

Figure 8: Collaborative Delivery Goals
Construction Manager/General Contractor
The Construction Manager at Risk (CM/GC) model is similar to PDB in terms of QBS selection and negotiated construction pricing with one key difference. For the PDB model, the design-build team is one legal entity under contract to the owner. For the CM/GC model, the team is comprised of two separate entities, and the designer and the builder each have a contract with the owner.
- The owner procures a professional services contract from both a designer and a construction manager.
- Both contractors can be selected based on qualifications at the beginning of the design phase.
- The construction manager provides suggestions, innovations, and constructability input to the designer during the design phase.
- Upon completion of the design, the construction manager and owner negotiate a price for the construction contract.
- Once an agreement is reached, they enter into a construction contract and the Construction Manager (CM) acts as the General Contractor (GC) to complete the construction.
Much like PDB, if the owner cannot reach agreement on the final contract terms with the CM, the owner may consider an “off-ramp” provision where it terminates the negotiations with the CM and moves ahead with the project through another contract strategy. The CM/GC model provides for early contractor involvement with the design team and owner which allows for ECI constructability input early and throughout the project.
The Federal Highway Administration (FHWA) conducted a study where they compiled a dataset of 291 completed highway projects from State Departments of Transportation that were active projects between 2012 and 2018. The dataset consisted of traditional DBB projects, and alternative delivery DB and CM/GC contracts. The FHWA found that the use of alternative delivery methods significantly reduced the project duration for the highway projects they sampled.34 As shown in Table 2, the mean project duration for the CM/GC projects when compared to DBB was 48% shorter (929 days compared to 1,774 days). The DB/LB project durations were 50% shorter than the DBB durations and the DB/BV durations were 15% shorter than the DBB projects. It is important to note that the main reason for the significant difference in the mean project durations is due to the difference in the mean design durations. By combining the design and construction phases, CM/GC and DB projects greatly reduced the design durations and ultimately the mean project durations.
FHWA not only found significant benefits from CM/GC and DB contracts in reducing project durations but also found significant benefits of CM/GC and DB contracting in reducing cost growth, i.e., the cost at contract award compared with the final contract cost. FHWA found that State DOTs “are expediting the overall project delivery time and gaining early cost certainty without witnessing additional cost growth in the construction contract. This is particularly notable given the early award of DB and CM/GC projects.”35 FHWA also found that a significant benefit of alternative delivery projects is much earlier cost certainty, which is the point at which an agency has a reliable project cost. Cost certainty is critical for both project and program management and is needed early in the project to avoid reprogramming actions and cost overruns. FHWA found that, when compared to DBB, the average point of cost certainty for CM/GC is more than 60% earlier for the projects in the study and the point of cost certainty for DB/BV is approximately 40% earlier than for DBB.
Contract Method | Mean Cost | Mean Project Duration (Days) | Mean Agency Design Duration (Days) | Mean Construction Duration (Days)* |
---|---|---|---|---|
DBB (n = 74) | $21,687,447 | 1,774 | 932 | 642 |
CM/CG (n = 24) | $41,368,952 | 929 | 361 | 511 |
DB/LB (n = 18) | $12,249,585 | 889 | 268 | 435 |
DB/BV (n = 21) | $48,532,458 | 1,516 | 662 | 837 |
Total (n = 137) | $28,010,219 | 1,470 | 710 | 620 |
*Construction duration for DB projects includes design-builder and construction (i.e., the DB contract duration.)
Table 2: FHWA Study Results36
Construction Manager at Risk
Construction Manager at Risk (CMAR) is similar to the CM/GC model in that the design-build team is two separate entities. The key difference between CM/GC and CMAR, however, is that, in a CMAR delivery method, the owner provides an initial design to a Construction Manager (CM), who then collaborates with the designer to further develop and refine the project design.
During the design phase, the CM will work on the owner’s behalf to provide suggestions, innovations, and constructability input to the designer. Prior to the design being complete, the CM will present the owner with a proposal for a Guaranteed Maximum Price (GMP). The CM and owner will then negotiate a final GMP. Once there is agreement, the CM and the owner will enter into a fixed-price contract and the CM will assume the risk of delivering the project within the GMP parameters. The CM is responsible for selecting sub-contractors and overseeing construction of the project.
Much like PDB and CM/GC, if the owner and design-builder cannot reach agreement on the GMP, then the owner may consider an “off-ramp” provision where it terminates the negotiations with the CM and moves ahead with the project through another contract strategy. CMAR and CM/GC are both proven to be effective collaborate delivery models and have demonstrated similar benefits for owners.
Collaborative Delivery Methods-Similarities and Differences
Collaborative delivery contracting methods such as DB, PDB, CM/GC, and CMAR, are similar in that they all result in a GMP or fixed-price construction contract. They are not open-ended cost-plus or cost-reimbursable type contracts. Under collaborative delivery contracts, both design and construction are procured using QBS and open-book negotiated pricing resulting in a GMP or fixed-price contract. Both private sector and public sector agencies have found that GMP and fixed-price contracts for construction are vital for effective risk management and minimizing construction cost-growth. Collaborative project development that includes early contractor involvement and negotiated construction pricing result in cost, schedule, and scope alignment and when combined with a fixed price contract can better meet owner objectives for risk sharing and cost and schedule certainty.
It is important to note that while collaborative delivery contracting methods such PDB, DB, CM/GC and CMAR all have significant benefits over traditional contracting methods such as DBB; a key difference between these methods is that PDB and DB have a singular contract advantage of an integrated Design-Build delivery model which CM/GC and CMAR do not. By integrating the designer and builder into one entity who has a single contract with the owner to both design and build the project, the owner has the extraordinary opportunity to correctly assign the appropriate risk factors to the party best able to manage, share, and mitigate the risk. A significant disadvantage of delivery models where the owner provides the contractor with plans and specifications is the owner implicitly warrants the accuracy of the design (Spearin Doctrine) and assumes the risk and liability for design deficiencies or omissions. Under an integrated design-build model, the owner is able to transfer this risk to the design-builder who is in the best position to manage both the design and construction risk. This benefit of integrated design and construction is especially significant for the large, complex, and difficult projects federal agencies are being asked to deliver today.
While QBS, negotiated pricing for construction, and early contractor involvement under collaborative delivery methods ensure improved risk sharing and cost and schedule certainty, an equally important advantage of design-build contracting methods where design and construction are integrated under a design-builder is the ability to commence construction earlier in the project lifecycle. This approach allows an agency to begin construction once critical design milestones have been reached—rather than waiting for 100% design completion—thereby meeting urgent mission needs and reducing overall project duration. Such flexibility is essential for effectively addressing time-sensitive priorities and is a key benefit of the integrated-design-build model.

Figure 9: Collaborative Delivery Models
Program Considerations
Modernization of MILCON and CW Program Rules
Federal agencies outside of DoD have the ability to efficiently program construction funds at the time of construction contract award, without lengthy and difficult reprogramming actions involving scope reductions and redesigns, resulting in significant time savings and better project outcomes. Also, owners have found it is much better to determine the true cost of construction at the time of construction award, when the project is adequately definitized through collaborative delivery, rather than awarding to an unrealistic number at the time of construction award and then finding out the true cost of construction at the end of the contract after multiple changes.
One of the key benefits of collaborative delivery is providing construction price certainty at the time of project definitization. It is important to note that, if USACE, NAVFAC, and AFCEC receive statutory authority to use collaborative delivery models, commensurate changes must be made to MILCON and CW programming rules. In order to take full advantage of collaborative delivery models, MILCON and CW program rules will need to be modernized to provide a process that results in accurate and timely programming estimates adequate enough to capture the cost of construction as determined by the solicitation process, thus avoiding the need for significant reprogramming actions. Federal agencies outside of USACE, NAVFAC, and AFCEC have programming processes with much more flexibility than the MILCON rules provide, allowing them flexibility and latitude in reprogramming actions. It is imperative that DoD modernize MILCON program rules to provide this same flexibility and latitude.
The Federal Bureau of Investigation (FBI) has used a very successful model of two-phase design-build. The FBI realized significant cost savings by consolidating three buildings into one.37 Under MILCON program rules, a scope change of this magnitude, even if resulting in cost savings, would require an agency to go through a lengthy and difficult process to request authorization changes and reprogramming actions.
Current MILCON and CW programs develop budget estimates early in the development of the projects, typically years in advance of planned construction. While there are opportunities for updating the estimates, project budgets are set prior to design completion and full project definitization. At the time of construction contract award, if the cost of construction, as determined by industry through the solicitation of proposals, is greater than the programmed amount then additional funds must be reprogrammed, or the scope must be reduced.
The reprogramming of funds or a change of project scope at the time of construction award is usually a difficult process and often results in undesired program impacts and significant delays. Current MILCON and CW programming rules are clearly intended to limit cost growth and scope increases and facilitate efficient program execution; however, unless the rules allow for the development of accurate project budget estimates and initially program the amount of funds needed at the time of construction contract award, the current MILCON and CW program rules are problematic and work against efficient program execution.
A key component of any project is the financing and programming of funds necessary to deliver the project. Most private sector owners require cost certainty at the beginning of construction. Other than appropriate contingencies, private sector financing solutions typically do not include funds for cost and schedule growth. Cost growth requires additional financing or a reduction in scope and usually schedule slippage, all of which result in undesired outcomes for the owner. Given this, private sector owners choose collaborative contract types that provide them with the cost and schedule certainty they require at the time of construction contract award.
Public sector owner objectives are not dissimilar to private sector owner objectives; both desire cost and schedule certainty as early as possible but certainly need it at the beginning of construction. With the benefits of early contractor involvement and negotiated construction pricing, both private sector and non-federal public sector agencies have found cost and schedule certainty at the time of construction contract award. This certainty in cost and schedule has resulted in minimal or no cost growth from the time of construction contract award to the time of construction contract completion and is one of the major benefits of collaborative delivery contracts.38 To take full advantage of the benefits from collaborative delivery contracting, MILCON and CW programming rules will need to be updated to allow for the initial programming of funds at a point where the project has been adequately definitized.
STRATCOM Headquarters Example
The U.S. Strategic Command Headquarters Facility Construction Project is an example of the challenge federal agencies have in completing large, complex, and difficult projects when constrained to traditional delivery contract methods and current programming rules. The original need for a new STRATCOM HQ building was detailed in 2007. The standard DoD process was used for the scoping, planning, designing, and then construction of the facility. The initial MILCON planning estimate for the building was $453M. After successive rounds of scope reduction and multiple amendments to the solicitation documents, the construction contract was awarded for $524M in November 2011.
In February 2018, 11 years after the need was identified, construction was complete at a cost of $617M and 29 months behind schedule. Given that a contract claim has not yet been resolved, final construction contract costs have yet to be determined but may end up around $750 million, the average of industry proposals for the initial solicitation.39
The following table outlines a chronology of significant events related to the planning, design, and construction phases for the STRATCOM Headquarters building.
Date | Activity | Cost |
---|---|---|
Jul. 2007 | DTRA assessment | N/A |
Jul. 2008 | Customer Concept Design (CCD) completed which identified the initial scope (997,000 SF) and estimated project costs at $453 million | $453M |
Nov. 2009 | Planning Charrette Completed, 1M SF facility | $560M |
Dec. 2009 | Design Charrette Completed | $562M |
Feb. 2010 | The Air Force included the USSTRATCOM replacement facility in the Air Force FY 2011 President’s Budget (FYs 2012 to 2014 for $564 million) | $564M |
Apr. 2010 | 35% Design Review and initial cost estimates. The design consultant estimated projects costs at $641M and the government estimated construction costs at $666M. | $641M (A/E) -$666M (Gov) |
Sept. 2010 | The USSTRATCOM replacement facility was included in the Air Force FY 2012 program objective memorandum for $564 million. | $564M |
Oct. 2010 | 60% Design Review; reduced scope by eliminating golf course, revised demolition methodology and removed two cooling towers | $576M (A-E) -$570M (Gov) |
Mar. 2011 | 95% Design Review | $551M |
Aug. 2011 | Request for Solicitation advertised as a fully designed, one-step Best-Value analysis, using technical and price evaluation factors. The working estimates were $547 million (base bid) and $560 million (with options). | $560M base with options |
Nov. 2011 | The Government amended the solicitation 11 times resulting in a government estimate including the total basic and total options, of $538.3 million. Four potential contractors submitted proposals that were about $200 million above the Government estimate—the lowest proposal contained a $660 million base bid and $728 million with options. The Government developed three courses of action to award the construction contract: Redesign the facility within $564 million by delaying award 15 months and pushing full operational capability 2 years. Award project within $564 million by reducing scope through post-proposal receipt amendments, expediting award to maintain construction schedule, and identifying post-award scope reductions. Pursue additional funds to maintain full scope. The Government proceeded with the second course of action. | Government Estimate: $538M base with options Lowest contractor bid: $728M base with options |
Dec. 2011 | Congress approved the FY 2012 National Defense Authorization Act (NDAA), signifying approval to construct the USSTRATCOM replacement facility at the $564 million requested amount. | $564M |
Feb. through Aug. 2012 | After significant scope reductions and amendments to the solicitation, the construction contract was awarded for $524.4 million with a 48-month contract duration (estimated completion date of Sept. 2016). | $524.4M |
Aug. 2012 through Jan. 2018 | Government issued multiple modifications to the construction contract to extend the period of performance by 29 months and increase the contract value by $93M. | |
Feb. 2018 | Construction Complete (Phase 1), Preliminary final construction cost: $617 million (20% cost growth), Construction duration: 77 months (60% schedule increase) | $617M |
Table 3. STRATCOM Project Timeline40
As demonstrated in this example, the MILCON programming process is not only lengthy but did not provide realistic scoping and did not result in accurate cost and schedule estimates. The STRATCOM project is just one example demonstrating the need for MILCON program reform and modernization. Unfortunately, federal construction projects like this example are not uncommon.41 42 Changes are needed to provide USACE, NAVFAC, and AFCEC the best contracting and programming tools available to be able to collaboratively work with construction contractors to incorporate early constructability input and negotiate accurate and realistic construction cost estimates.
Recommendations & Conclusion
We recommend that USACE, NAVFAC, and AFCEC consider the limitations of traditional competitive-priced construction contracts, and the benefits of collaborative delivery contracts widely used by private sector owners, non-federal public agencies, and other federal agencies. We recommend the following specific actions be considered:
Seek Authority.
USACE, NAVFAC, and AFCEC should seek clear and explicit authority to use collaborative delivery contracting methods proven in the private sector as best practices for obtaining desired project, cost, and schedule outcomes.
Modernize Program Rules.
Modernize MILCON and CW program rules to be commensurate with any contracting model changes and streamline the program rules to capture the full benefits that collaborative delivery models offer.
Update Federal Acquisition Regulations (FAR).
Should new contracting authorities be provided to allow the use of collaborative delivery methods by USACE, NAVFAC, and AFCEC, the Federal Acquisition Regulation (FAR) should be updated to provide agencies guidance on the use of collaborative delivery contracting methods. FAR updates should include best practice contracting guidance already proven in the private sector. Federal agencies should provide specialized training to agency personnel on the use and implementation of collaborative contracting methods.
Leverage Contracting Tools.
Federal agencies should maximize the benefits of any new authorities and new collaborative delivery contracting tools by leveraging these tools to execute their largest, most complex, and most difficult projects. In addition, agencies should especially focus on using any new collaborative delivery model authority to advance Small-Business program goals and maximize federal contracting opportunities for small businesses.
Incorporate Lessons Learned.
USACE, NAVFAC, and AFCEC should explore collaborative delivery procurement methods already in use by some federal agencies and many non-federal public agencies and incorporate lessons learned and best practices that public agencies have used in implementing collaborative delivery contracting models.
References
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- The Army Civil Works Disaster Recovery and Resiliency Programs (2018-2023).
a. Disaster Recovery Supplemental Appropriations 2023. https://www.congress.gov/bill/117th-congress/senate-bill/5355
b. Disaster Recovery Supplemental Appropriations 2022. https://www.congress.gov/bill/117th-congress/house-resolution/973?g=%7B%22search%22%3A%22b.%5CtDisaster+Recovery+Supplemental+Appropriations+2022.%22%7D&s=2&r=1
c. BIL/IIJA 202. https://www.transit.dot.gov/IIJA
d. Disaster Relief Act 2019. https://www.congress.gov/bill/116th-congress/house-bill/2284?g=%7B%22search%22%3A%22d.%5CtDisaster+Relief+Act+2019%22%7D&s=4&r=1
e. Bipartisan Budget Act 2018. https://www.congress.gov/bill/115th-congress/house-bill/1892?q=%7B%22search%22%3A%22e.%5CtBipartisan+Budget+Act+2018%22%7D&s=5&r=1 ↩︎ - H.R.5184. Competition in Contracting Act of 1984. https://www.congress.gov/bill/98th-congress/house-bill/5184/all-info#:~:text=%2F20%2F1984)-,Competition%20in%20Contracting%20Act%20of%201984%20%2D%20Amends%20the%20Office%20of,in%20conducting%20any%20procurement%20activity. ↩︎
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- U.S. Department of Defense. (2024). Inspector General: (U) Audit of Cost Increases and Schedule Delays of Military Construction Projects Managed by Naval Facilities Engineering Systems Command. https://media.defense.gov/2024/Nov/07/2003579924/-1/-1/1/DODIG-2025-017%20SECURE.PDF ↩︎
- 10 U.S.C 3206(c)(1)(B) and 41 U.S.C. 3306. Planning and Solicitation. ↩︎
- 10 U.S.C 3241. Design-build Selection Procedures. ↩︎
- 10 U.S.C. 3323. Cost-plus Contracting prohibited for military construction. . ↩︎
- FAR 36.209. https://www.acquisition.gov/far/36.209 ↩︎
- 40 USC 1101. AE Selection Procedures. https://uscode.house.gov/view.xhtml?path=/prelim@title40/subtitle1/chapter11&edition=prelim ↩︎
- FAR Part 14. Sealed Bidding. https://www.acquisition.gov/far/part-14 ↩︎
- FAR Part 15. Contracting by Negotiation. https://www.acquisition.gov/far/part-15 ↩︎
- FAR 36.3. Two-Phase Design-Build Selection Procedures. https://www.acquisition.gov/far/subpart-36.3 ↩︎
- U.S. Small Business Administration. (2024). 8 (a) Business Development program: Federal contracting and training program for experienced small business owners who are socially and economically disadvantaged. https://www.sba.gov/federal-contracting/contracting-assistance-programs/8a-business-development-program ↩︎
- Design-Build Institute of America. (2024). DBIA Primers. Deeper Dive – Progressive Design-Build. https://store.dbia.org/product/deeper-dive-progressive-design-build/ ↩︎
- Design-Build Institute of America. (2024). DBIA Primers. Deeper Dive – Progressive Design-Build. https://store.dbia.org/product/deeper-dive-progressive-design-build/ ↩︎
- Molenaar, et al. (2018). Revisiting Project Delivery Performance: Final Report. Charles Pankow Foundation and Construction Industry Institute. https://www.pankowfoundation.org/site/assets/files/1833/revisiting_project_performance_final_report.pdf ↩︎
- Thomas Esq., Cody. (June 2022). Three Benefits of Progressive Design-Build (PDB) for Construction Projects. AIA Contract Documents. https://learn.aiacontracts.com/articles/6514836-three-benefits-of-progressive-design-build/ ↩︎
- Design-Build Institute of America. (2024). DBIA Primers. Deeper Dive – Progressive Design-Build. https://store.dbia.org/product/deeper-dive-progressive-design-build/ ↩︎
- Federal Transit Administration. (2012). Moving Ahead for Progress in the 21st Century Act (MAP-21). https://www.fhwa.dot.gov/map21/summaryinfo.cfm ↩︎
- Federal Transit Administration. (2024). The Infrastructure Investment and Jobs Act. https://www.transit.dot.gov/IIJA ↩︎
- Federal Emergency Management Agency (FEMA). (2025). FEMA Obligates $1.02 Billion for Critical Repairs and Replacement of Territory’s 911 Communication Towers and Power Plants. https://www.fema.gov/press-release/20250116/fema-obligates-102-billion-critical-repairs-and-replacement-territorys-911 ↩︎
- Federal Aviation Administration. (2024). Garamendi Secures Wins for Safer, Easier Airline Travel in FAA Reauthorization Bill. https://garamendi.house.gov/media/press-releases/garamendi-secures-wins-safer-easier-airline-travel-faa-reauthorization-bill ↩︎
- Design-Build Institute of America. (2023). New Design-Build Research Shows Continued Growth + Opportunities to Mitigate Market Challenges. https://dbia.org/blog/new-design-build-research-shows-continued-growth-opportunities-to-mitigate-market-challenges/ ↩︎
- Design-Build Institute of America. (2023). New Design-Build Research Shows Continued Growth + Opportunities to Mitigate Market Challenges. https://dbia.org/blog/new-design-build-research-shows-continued-growth-opportunities-to-mitigate-market-challenges/ ↩︎
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- Design-Build Institute of America. (2024). DBIA Primers. Deeper Dive – Progressive Design-Build. https://store.dbia.org/product/deeper-dive-progressive-design-build/ ↩︎
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Applicable References
- Headquarters, Department of the Army (31 January 2025). Report to Congress on Progressive Design-Build Model for Military Construction.
- House report 118-125, Report accompanying H.R. 2670, the National Defense Authorization Act for Fiscal Year 2024, Page 405.
https://www.congress.gov/congressional-report/118th-congress/house-report/125/1
Appendix A
Name | Location | Design-Builder | Procurement Method Contract Format | Completed Final Cost |
---|---|---|---|---|
University of Washington Health Sciences Education Building | WA | Lease Crutcher Lewis | Progressive Design-Build | $77,466,227 |
Lift Station 87 Wet Weather Flow Transfer | FL | Archer Western Construction, LLC | Progressive Design-Build | $11,507,000 |
1021 O Street State Office Building | CA | Hensel Phillips | Progressive Design-Build Lump Sum (or Fixed Price) | $435,655,369 |
Lewiston WTP Retrofit | ID | IMCO General Construction, Inc. | Progressive Design-Build Lump Sum (or Fixed Price) | $29,342,793 |
Silicon Valley Clean Water Gravity Pipeline Project | CA | Barnard-Bessac Joint Venture | Progressive Design-Build Lump Sum (or Fixed Price) | $228,000,000 |
Midland Water Pollution Control Plant (WPCP) Expansion | TX | Jacobs | Progressive Design-Build (A PDB contract was executed between Pioneer and Jacobs) | $134,000,000 |
Cutter Lateral Reach 21 Water Treatment Plant and Associated Items, Navajo Gallup Water Supply Project | NM | Jacobs | Progressive Design-Build Lump Sum (or Fixed Price) | $70,729,847 |
University of Washington Hans Rosling Center for Population Health | WA | Lease Crutcher Lewis | Progressive Design-Build (UW issued a custom PDB contract to Lewis; Lewis issued a DBIA 540 to Miller Hull.) | $176,000,000 |
New FOX Factory Headquarters | GA | Carroll Daniel Construction Co. | Progressive Design-Build Lump Sum (or Fixed Price) | $47,172,103 |
Chula Vista Fire Station 3 & 5 | CA | EC Constructors, Inc. | Progressive Design-Build Design-Build Guaranteed Maximum Price (GMP) | $16,599,946 |
Montevina Water Treatment Plant Improvements Project | CA | HDR | Progressive Design-Build The law firm of Hawkins, Delafield & Wood assisted San Jose Water Company to prepare a customized, two-part PDB agreement to be used exclusively by San Jose Water Company for the project. | $53,523,342 |
McAlpine Creek WWMF Design-Build Effluent Filters Upgrades and Expansion | NC | Crowder Construction Company | Progressive Design-Build Guaranteed Maximum Price (GMP) | $25,285,000 |
Los Angeles International Airport Central Utility Plant Replacement | CA | Clark Construction Group | Progressive Design-Build Target Price | $295,068,021 |
Los Angeles Unified School District – Jordan High School Redevelopment Project | CA | Progressive Design-Build Guaranteed Maximum Price (GMP) | $72,682,845 | |
Texas Health Recovery & Wellness Center | TX | The Beck Group | Progressive Design-Build Design-Build | $34,218,753 |