Choosing a project delivery method in California

Owners frequently pick a delivery method by default: whatever they used last time, or whatever their agency's procurement staff is most comfortable administering. That is a reasonable heuristic and a poor decision process, because the methods allocate risk very differently and the right choice depends on the specific project.

The owner contracts separately with a designer and, after the design is complete, with a contractor selected by competitive bid. This remains the default for most California public works because it is the procurement method most statutes contemplate.

Strengths. Maximum price competition, maximum design control, and a procurement process that is well understood and difficult to protest successfully.

Weaknesses. No builder input during design, so constructability problems surface as change orders. Sequential phases mean the longest overall duration. And the owner retains design risk, which is the basis for most differing site condition and design error claims.

Best when. The scope is fully definable, the schedule permits sequential phases, and price competition matters more than schedule.

The owner contracts with a single entity responsible for both design and construction, selected against an owner developed criteria package.

Strengths. Single point of responsibility, meaningful schedule compression from overlapping design and construction, and transfer of design risk to the design-builder.

Weaknesses. The owner gives up design control within the criteria. Vague criteria produce the cheapest compliant interpretation. And there is no competitive bid after award to validate the price, which means an owner without independent cost capability has no check on it.

Best when. The schedule matters more than design control, the owner can define performance requirements clearly, and the owner has the internal or consultant capacity to develop strong criteria documents. See design-build management.

A construction manager is engaged during design for preconstruction services, then converts to a construction contract with a guaranteed maximum price.

Strengths. Builder input during design while the owner keeps a direct contract with the designer. Price certainty before documents are complete. Good fit for evolving scope with a capped budget.

Weaknesses. The CM advises you and then becomes your counterparty at GMP, which is a structural tension. Contingency and allowance stacking within the GMP is common and invisible without independent verification. And comparing CM proposals is genuinely difficult because fee, general conditions, and contingency are not parallel across proposals.

Best when. Scope will evolve, the budget must be capped, and the owner can maintain independent cost capability through GMP. See CM at-risk.

A design-builder is selected on qualifications, the design is developed collaboratively, and price is set when the scope is understood, with an owner off ramp if the price is unacceptable.

Strengths. Combines design-build's single point responsibility with the ability to select on qualifications rather than on a price for an undefined scope. Well suited to complex projects where the scope genuinely cannot be defined at procurement.

Weaknesses. Price is not established at selection, so the owner carries uncertainty longer. Requires real owner participation and independent cost capability to validate the eventual price. Statutory authority varies by agency type in California.

Best when. Scope is not definable at procurement, the owner is sophisticated, and qualifications matter more than an early number.

Owner, designer, and builder sign one multi party agreement and share a risk and reward pool tied to collective outcomes.

Strengths. Genuine financial alignment, the most collaborative environment available, and target value design that treats cost as an input rather than a result.

Weaknesses. Contractual complexity, a requirement for sophisticated and willing participants, active owner involvement at a cadence many organizations cannot sustain, and limited applicability under most California public procurement statutes.

Best when. The project is complex, the participants are experienced with the model, and the owner can participate actively. See integrated project delivery.

Four questions resolve most of it.

For public agencies there is a fifth question that comes first: what does the applicable statute actually permit for your agency type and project value. That answer sometimes eliminates options before the analysis begins.

Whatever method you select, the same work still has to be done. Someone has to define the scope, price it, schedule it, and hold the line during construction. The delivery method determines who that someone contracts with, not whether they are needed. Talk to us about your project.