What is project delivery in construction?
Project delivery is the overall approach an owner uses to design and build a project: which parties are hired, in what order, how they are paid, and who carries the risk for design, cost, and schedule. Common methods include design-bid-build, design-build, and CM at risk. It differs from contract type, such as lump sum or GMP.
Project delivery describes how a project gets from idea to finished building. It answers who designs it, who builds it, when the builder comes on board, and how risk is shared. The choice of delivery method shapes nearly everything that follows: the contract forms, how the price is set, how changes are handled, and how much say the contractor has in design.
Owners pick the method. Contractors decide which methods they want to compete in, because each one rewards different skills.
The main project delivery methods
| Method | How it works | Contractor's role |
|---|---|---|
| Design-bid-build | Owner hires a designer, completes drawings, then bids the work | Prices complete documents; little design input |
| Construction manager at risk | Owner hires a CM during design, who later commits to a GMP | Precon advice, then builds at a guaranteed maximum price |
| Construction manager as agent | CM advises the owner but does not hold trade contracts | Advisor; owner contracts trades directly |
| Design-build | One entity holds both design and construction | Responsible for design and construction under one contract |
| Integrated project delivery | Owner, designer, and builder share risk and reward under one agreement | Shares in savings and overruns with the team |
See the individual entries for design-bid-build, construction management at risk, construction manager as agent, design-build, and IPD. Public owners may be limited by state procurement law in which methods they can use, so check the bid documents.
How the choice plays out on a real job
Say a private developer wants a 90-unit apartment building open in 20 months. With design-bid-build, design and permitting run first, then bidding, then construction. Clean and competitive, but slow, and every gap in the drawings becomes a change order fight.
The developer instead hires a CM at risk during schematic design. The CM prices the design at each stage, flags that the podium structure is over budget, and suggests a different framing system. Foundations start on an early package while the upper floors are still in design. The developer gets a GMP once drawings are mostly complete. The trade-off: less hard-bid pricing pressure at the start, and a contract that needs careful open book controls.
For the subcontractors, the method changes the work too. On the design-bid-build version they would get a complete set of drawings and a hard bid date. On the CM at risk version, the mechanical and electrical subs may be brought in early as design-assist partners, pricing and shaping their systems before the drawings are final. That suits subs who like influencing design and can estimate from partial information.
Common mistakes
- Bidding a design-build job like a hard bid, without pricing design risk.
- Treating a CM at risk precon phase as free estimating. Precon is a service and should be paid.
- Assuming the delivery method decides payment. Delivery method and payment type (lump sum, cost-plus, GMP) are related but separate choices.
- Owners choosing fast-track delivery without budget for the uncertainty it brings.
Related terms
See fast-track construction, guaranteed maximum price, owner-contractor agreement, and precon.
Frequently asked questions
What is the most common project delivery method?
Design-bid-build is the traditional method and is still widely used, especially on public work. Design-build and CM at risk are common on private and larger public projects.
Is project delivery the same as contract type?
No. Delivery method is about who is hired and when. Contract type is about how the contractor is paid, such as lump sum, cost-plus, or GMP. A design-build job can be lump sum or GMP, for example.
Which delivery method is fastest?
Methods that overlap design and construction, such as design-build or CM at risk with early packages, can shorten schedules. They also carry more cost uncertainty early on.
Can a small contractor work under design-build?
Yes. Many residential and light commercial contractors offer design-build by employing or partnering with a designer. Check licensing rules for design services in your state.
