Guide · Owners and developers · 13 min read · Updated September 19, 2026
Construction project delivery methods: an owner's guide
Your delivery method determines who designs, who builds, when the builder joins the team, and which decisions stay with you. This guide explains the main options and helps owners and developers choose a structure that fits the project, the budget, and their own capacity to manage it.
Start with the project's constraints, then choose the delivery method. Design-bid-build suits a well-defined scope and a sequential process. Design-build combines design and construction responsibility. CM at risk and GC/CM bring construction input into an owner-led design process. Progressive design-build and IPD support earlier joint decisions, with different contracts and pricing arrangements. No method removes the need for a clear scope, capable people, and coordinated documents.
What is a construction project delivery method?
A project delivery method organizes the contractual relationships between the owner, designers, and builders. It establishes who hires whom, how design and construction interact, and where responsibility sits. The same building could be delivered through several different arrangements.
This guide focuses on common U.S. building and infrastructure practices, with a few international variants. Names and legal requirements differ by jurisdiction. Public owners should confirm permitted methods, approval requirements, and funding conditions before starting procurement.
Separate delivery, selection, and payment
- Delivery: how the team is organized—for example, design-build or construction manager at risk.
- Selection: how you choose the team—for example, qualifications, competitive price, or a combination through best-value procurement.
- Payment: how compensation is calculated—for example, lump sum, cost-plus, unit prices, or a guaranteed maximum price.
The AIA–AGC primer on project delivery distinguishes delivery arrangements from provider selection. Do not assume a design-build contract is always lump sum or that competitive bidding is available only under design-bid-build.
With lump sum, the contractor agrees to a price for defined work. With cost-plus, the owner pays allowable costs plus an agreed fee. With unit prices, payment depends on measured quantities and agreed rates. Each still needs clear scope and change rules.
A guaranteed maximum price (GMP) is a payment provision, not a separate delivery method. It establishes a ceiling for the defined work, subject to the agreement's adjustments. Examine allowances, exclusions, contingencies, and change provisions before treating that ceiling as a complete project budget. AIA Contract Documents explains how GMP agreements work.
Construction delivery methods compared
Use this table to build a shortlist. These are typical arrangements; the signed agreements determine the actual responsibilities. The project matches in this guide are our suggested starting points, not a ranking of proven cost or schedule performance.
| Method | Owner's core contracts | Builder involvement | Main owner tradeoff |
|---|---|---|---|
| Design-bid-build | Separate designer and general contractor | Usually after bid documents | Detailed design control; later construction pricing and input |
| Design-build | One design-builder for design and construction | Design and construction team engaged together | Combined responsibility; requirements must be clear |
| Progressive design-build | Design-builder engaged through a staged process | Early, before the final construction price | Develop scope together; validate price and exit options |
| CM at risk / CMAR | Separate designer and CM as constructor | During design | Early contractor advice; scrutinize the eventual price basis |
| GC/CM or CM/GC | Separate designer and construction manager/general contractor | Design-phase services, then construction agreement | Early input within jurisdiction-specific procedures |
| Agency CM / multiple prime | Designer, adviser, and contractor or trade contracts | Adviser early; trade timing varies | Direct oversight; more owner coordination responsibility |
| Integrated project delivery | Often a multiparty owner–designer–builder agreement | Early joint planning | Aligned incentives; intensive owner participation |
Specialized options include EPC, EPCM, management contracting, alliancing, job order contracting, and public-private partnerships. They address different needs and should not be treated as interchangeable substitutes.
Quick guide: which delivery method fits which project?
Start with the condition driving your decision. A project type alone does not determine the answer: two apartment buildings can need different approaches if one has a completed design and the other has unresolved site constraints.
| Project or priority | Start by comparing | Question that decides the fit |
|---|---|---|
| Defined building scope, completed design, flexible start date | Design-bid-build | Are the documents coordinated enough for comparable bids? |
| Warehouse, commercial facility, or repeatable building with clear performance needs | Design-build; DBB as a baseline | Can you state the required quality and performance before selection? |
| Multifamily or mixed-use development with evolving scope and a target budget | CMAR or progressive design-build | Do you want to retain a direct designer contract or develop the design with one design-builder? |
| Occupied school, hospital renovation, or phased campus work | CMAR, eligible GC/CM, or progressive design-build | Who can plan shutdowns, temporary services, and access during design? |
| Complex facility with tightly connected building systems | CMAR, progressive design-build, or IPD | Can your team support early trade participation and timely joint decisions? |
| Bridge, utility, or infrastructure work with difficult staging | CM/GC or design-build | How will construction input, third-party approvals, and site uncertainty be managed? |
| Process or energy facility with defined output requirements | EPC; EPCM for a capable owner wanting direct package control | Who integrates equipment, testing, commissioning, and performance acceptance? |
| Recurring small repairs across a property portfolio | JOC or an appropriate task-order arrangement | Are tasks repeatable and within the contract's permitted scope? |
| Public asset with substantial long-term operating obligations | P3 / DBFOM alongside conventional public delivery | Does the whole-life business case justify the financing and procurement structure? |
For a first-time owner, pay particular attention to the decisions each method expects you to make. An experienced owner's adviser can help define the brief and evaluate proposals. A simpler contracting structure still needs someone on your side who can assess scope, quality, price, and progress.
1. Design-bid-build (DBB): complete the design, then procure construction
In design-bid-build, the owner appoints a designer, develops the construction documents, seeks bids, and contracts separately with a builder. The sequence creates a common documented scope against which contractors can price. See the AIA–AGC delivery definitions.
Why choose it: you want to direct the design through your own architect and compare construction proposals against a developed set. It is a useful starting point when the scope is stable and the schedule can accommodate sequential design and procurement.
Watch for: construction pricing may arrive after major design decisions. If bids exceed the budget, redesign and rebidding can affect the program. A low bid also depends on what the documents actually include; unclear scope can lead to qualifications and later disagreements.
Owner action: obtain cost advice during design and resolve discrepancies before bidding. Our tender drawing guide explains what bidders need in the package.
2. Design-build (DB): one contract for design and construction
The owner contracts with one design-build entity for both design and construction. That entity may be organized in different ways; the defining feature is the combined contractual responsibility. DBIA's introduction to design-build explains this structure.
Why choose it: you want the designer and builder working within one team, with opportunities to coordinate design, procurement, and construction. Where permitting and package readiness allow, work can overlap. An earlier start is possible, but depends on how the project is planned.
Watch for: the owner's brief carries substantial weight. A requirement such as “high-quality finishes” leaves more room for interpretation than documented materials, durability criteria, and acceptance requirements. A single contract does not settle an unclear scope.
Owner action: define required outcomes, review milestones, and approval rights before procurement. Decide where the team has design freedom and where exact requirements matter. Consider an owner's adviser if you need help evaluating alternatives and confirming that the proposal meets your objectives.
3. Progressive design-build (PDB): develop the solution and price together
Progressive design-build retains the combined design-and-construction relationship but stages the commitment. The owner typically selects the team primarily on qualifications, then develops the design, risk allocation, and price with it. DBIA distinguishes this approach from best-value design-build, where competing proposals generally establish more of the solution and commercial offer during selection.
Why choose it: you need construction expertise while key requirements or technical choices are still being resolved. It can suit a project where forcing a complete solution into the initial competition would require too many assumptions.
Watch for: choosing the team is not the same as accepting the eventual construction price. Agree on cost transparency, estimate reviews, subcontract procurement, and the process if the parties cannot agree to proceed.
Owner action: establish decision deadlines and price-validation steps. Define the contractual exit route, including payment for completed work and rights to use design information. Read DBIA's progressive design-build best-practice guidance when setting up procurement.
4. Construction manager at risk (CMAR or CM at risk)
The owner retains its designer and hires a construction manager that provides preconstruction services and later takes on construction responsibility. The CM commonly holds the trade subcontracts. A GMP is often used, but the constructor's role and the payment basis are separate choices. AIA provides CM-as-constructor agreements with different compensation arrangements.
Why choose it: you want to retain the direct design relationship while getting contractor feedback on estimating, phasing, logistics, and procurement. For an occupied renovation, ask the team to explain how the design supports temporary access and service continuity.
Watch for: a GMP developed before every detail is complete depends on documented assumptions. Compare the drawings with the estimate, exclusions, allowances, and contingency rules. Scope left outside the agreement can remain an owner exposure.
Owner action: require a clear record of what each pricing milestone includes. Identify which design developments fit within the agreed scope and which require an authorized change.
5. GC/CM and CM/GC: early contractor involvement with regional rules
GC/CM means general contractor/construction manager; it is also written GCCM. CM/GC reverses the order of those terms. Both commonly describe a contractor advising during design before taking on construction. They belong to the same broad family as CM at risk, but the names do not establish identical procurement or contract rules.
GC/CM in Washington State
Washington's statutory definition includes design-phase services and a negotiated maximum allowable construction cost. Its permitted-use provisions address conditions such as complex phasing, occupied facilities, and technical work, subject to the applicable approval process. Treat this as a jurisdiction-specific example; public owners elsewhere must check their own authority.
CM/GC in transportation
The Federal Highway Administration describes CM/GC as design-phase contractor consultation followed by a construction contract if an acceptable price is agreed. Its guidance highlights construction staging and difficult project interfaces as reasons to involve the builder early.
Owner action: ask how the construction price will be tested, what happens if negotiations fail, and which subcontract selection procedures apply. Do not import assumptions from a private CMAR agreement into a public GC/CM procurement.
6. Agency construction management and multiple-prime contracting
An agency construction manager, also called a CM adviser or CMa, provides management services for the owner. The adviser does not become the builder merely by managing cost, schedule, and coordination. Professional construction management can support different delivery methods, as CMAA explains.
Under a multiple-prime arrangement, the owner contracts directly with several contractors for separate packages. An agency CM may help coordinate them. This differs from hiring one general contractor that holds the trade subcontracts. The CMAA owner's guide discusses these delivery and management choices.
Why choose it: an experienced owner wants direct access to package procurement and has the people to manage decisions across the contracts.
Watch for: package gaps, overlapping scope, and delays affecting another contractor can create substantial coordination work. Employing an adviser does not automatically transfer those risks away from the owner.
Owner action: write down who provides shared services, temporary works, access, schedule coordination, and interface details before letting packages.
7. Integrated project delivery (IPD): shared planning and incentives
IPD brings the owner, designer, constructor, and often key trades into early collaboration. Contractual IPD commonly uses a multiparty agreement with shared financial incentives and joint governance. The AIA's IPD guide also distinguishes integrated principles from the particular contractual structure used.
Why choose it: the project depends on frequent decisions across tightly connected systems, and the owner can commit to active participation. The approach deserves consideration when key parties are willing to evaluate options for the overall project and work with transparent information.
Watch for: collaboration requires operational habits as well as contract language. Define decision authority, cost reporting, incentives, and dispute procedures. A partnering workshop or shared BIM model alone does not create a multiparty IPD agreement.
Owner action: test team readiness before selection. Ask how a difficult scope or budget decision will be made, who must attend, and how quickly the owner can respond.
Other delivery and procurement approaches owners should know
EPC and turnkey delivery
Engineering, procurement, and construction (EPC) combines those functions under a lead contractor, often for industrial, process, or energy facilities. Turnkey arrangements aim to deliver a facility ready for its defined use, with the actual completion obligations set by the contract. FIDIC's contract overview explains the EPC/turnkey model.
Consider it when performance can be defined and verified. Pay close attention to commissioning, acceptance testing, owner-supplied equipment, utility interfaces, and operating conditions. “Turnkey” alone does not define the scope or transfer every risk.
EPCM: engineering, procurement, and construction management
EPCM is generally a professional-services arrangement. The provider designs and manages procurement and construction, while the owner typically holds the equipment and construction contracts. This FIDIC-hosted EPC/EPCM analysis explains the distinction.
It can suit an experienced industrial owner wanting direct package control. Evaluate the internal staffing needed to manage those commitments; the extra letter changes the commercial structure substantially.
Management contracting
In management contracting, a management contractor holds the works-package contracts and manages their delivery. In construction management, those trade contracts are held directly by the owner. The Scottish Government's procurement handbook explains this distinction, which is especially useful when working with UK terminology.
Do not assume that holding package contracts means accepting the same overall price risk as a lump-sum general contractor. Read the specific agreement and cost provisions.
Alliancing
Project alliances bring an owner and delivery participants into a collaborative agreement with shared governance and agreed commercial incentives. They are used in some infrastructure markets. Australia's national delivery guidelines provide an authoritative starting point.
Consider the approach where uncertainty and interfaces warrant intensive joint management. An alliance and an IPD agreement may share principles, but their legal and commercial details need separate assessment.
Job order contracting (JOC) and task orders
JOC supports a series of defined work orders under a standing contract, often using an agreed unit-price book and adjustment factor. It can be useful for recurring repairs and modest alterations across a portfolio. Washington's definitions illustrate the contract and work-order structure.
Check eligibility, scope limits, quantities, and each task's design needs. A general task-order contract is not necessarily JOC, and a standing agreement does not make it suitable for every capital project.
Public-private partnerships: P3, PPP, DBFOM, and related structures
A public-private partnership can combine delivery with financing and long-term operating obligations. In design-build-finance-operate-maintain (DBFOM), a private partner takes on those bundled responsibilities. FHWA's P3 resources explain this model for infrastructure.
Related labels include design-build-operate-maintain (DBOM), which does not by itself include private financing, and build-operate-transfer (BOT), which describes a structure including a later transfer. FHWA outlines these delivery variants. Always examine the actual allocation of ownership, funding, revenue, and operating responsibilities.
Consider P3 only after comparing whole-life cost, service performance, retained public risks, and affordability against conventional delivery. Private financing still requires repayment through a defined funding source. This is a long-term commercial decision as well as a construction choice.
Fast-track, design-assist, and two-stage procurement
These describe strategies that can sit within delivery arrangements. Fast-track overlaps activities; design-assist brings contractor or trade input into design; two-stage procurement appoints a party before finalizing a later construction commitment. Their value depends on the authority, scope, and price terms agreed. Ask who remains responsible for design and what each early package authorizes.
How to choose: seven questions for owners and developers
Use these questions in an early project workshop. Record the answers before asking the market to propose a delivery solution.
- What is fixed, and what is still undecided? Separate the required opening date, budget limit, and must-have functions from preferences. List unresolved site, tenant, equipment, and approval questions.
- How much direct design control do you want? Decide whether retaining your own designer is a priority or whether you prefer one entity responsible for the combined solution.
- When is construction input most valuable? Identify decisions where logistics, procurement, temporary works, or trade expertise could change the design.
- When do you need a price commitment? Check what the lender, board, or investment committee actually requires. Ask which documents, assumptions, allowances, and exclusions support that commitment.
- Who on your team can make decisions? Name the people responsible for scope, budget, operations, and approvals. Match the arrangement to their availability and experience.
- Can the market deliver it? Test whether qualified designers, builders, trades, and advisers are available. Ask potential teams about relevant experience and capacity through an appropriate procurement process.
- What constraints govern the choice? Confirm public procurement authority where applicable, funding requirements, insurance, bonding, and the proposed contract terms with your advisers.
Then shortlist two or three methods. For each, write a one-page plan showing the contracts, owner staffing, design decisions, pricing milestones, major risks, and review dates. A method that sounds attractive may become impractical when you map the decisions it requires.
Compare the complete development outcome
For a developer, the construction contract is one part of the business plan. Consider design and advisory fees, financing carry, procurement lead times, operating costs, and the consequences of a delayed opening. Compare realistic scenarios for each method using the same scope assumptions. Do not select solely on the lowest fee or an unsupported promise of speed.
Every delivery method needs coordinated construction documents
A delivery method determines relationships and responsibilities. The team still needs drawings, specifications, and requirements that describe a consistent project. The most useful review point depends on the arrangement.
- DBB: review the coordinated tender set before bids, then check addenda against the affected documents.
- Design-build and PDB: compare the developing documents with owner requirements and review each package before release.
- CMAR and GC/CM: review the drawings supporting price commitments and early packages, including assumptions that later design must satisfy.
- IPD and other collaborative approaches: confirm that joint decisions reach all affected drawings, schedules, and specifications.
- Multiple-prime and EPCM: pay particular attention to gaps and contradictions at package boundaries.
Groundbook helps teams review drawings alongside specifications, reports, and QA/QC checklists. Potential issues are clouded on the drawings, with references highlighted so reviewers can investigate the evidence. Comments, severity, and status help the team record decisions and follow up.
Our aim is to make that review faster and more thorough. The responsible professionals still verify findings and resolve the design. Whichever delivery method you choose, build time into the program to close issues before procurement or construction depends on them.
Continue reading: How drawing review works under each project delivery method explains who reviews, when to check the documents, and how Groundbook can support each workflow.
For the next step, use our construction document QA/QC checklist and read about the construction cost of drawing errors.
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Questions, answered
Frequently asked questions
What are the main construction project delivery methods?
Common methods include design-bid-build, design-build, progressive design-build, construction manager at risk, GC/CM or CM/GC, and integrated project delivery. Owners may also use agency construction management and multiple-prime contracts. Specialized arrangements include EPC, EPCM, alliances, and public-private partnerships.
What is the difference between design-build and design-bid-build?
In design-bid-build, the owner contracts separately with the designer and builder, usually procuring construction after the bid documents are developed. In design-build, one entity contracts with the owner for both design and construction.
What does GCCM mean in construction?
GCCM, commonly written GC/CM, means general contractor/construction manager. The contractor provides services during design and later undertakes construction. Its procurement and pricing rules depend on the jurisdiction and contract; Washington public works uses a specifically defined GC/CM procedure.
Is GC/CM the same as CM at risk?
They share the broad approach of early contractor involvement with a separate owner-appointed designer. They should not be assumed identical: statutory approvals, selection, subcontract procurement, and price terms can differ.
Is a guaranteed maximum price a delivery method?
No. GMP is a payment provision that can be used within different delivery arrangements. Its coverage depends on the agreed scope, allowances, exclusions, contingencies, and permitted adjustments.
Which project delivery method is cheapest or fastest?
There is no universal winner. Compare methods against the same project scope, market conditions, schedule constraints, and owner capabilities. An early start or low initial price does not by itself establish the lowest completed project cost.
How should an owner choose a delivery method?
Start with scope certainty, design control, the need for early construction input, pricing requirements, owner staffing, market capacity, and procurement constraints. Shortlist compatible methods and compare their contracts, decision milestones, and retained risks.
Choose your delivery method. Review the documents behind it.
Check drawings and supporting files together, then investigate potential conflicts directly on the marked-up sheets.