Guide
Design-build vs. design-bid-build
Two ways to deliver a construction project. The difference comes down to how many contracts you sign, when the price is known, and who is responsible when the drawings and the field don't match.
The short version
Design-build puts design and construction under one contract. The same team draws the project and builds it, pricing as the design develops.
Design-bid-build is the traditional route: you hire an architect to finish the drawings, send them out for bids, and hire a separate contractor to build them.
Side by side
| Design-build | Design-bid-build | |
|---|---|---|
| Contracts | One contract with the design-builder | Separate contracts with the designer and the builder |
| Who you call | One point of contact | Architect for design questions, contractor for construction |
| Pricing | Priced while the design develops | Priced after drawings are complete, through bids |
| Schedule | Design, pricing, and permitting overlap | Design, then bidding, then construction, in sequence |
| Budget risk | Caught early, while design can still change | Discovered at bid time, which can force a redesign |
| Changes and disputes | Builder owns gaps between design and construction | Gaps between drawings and field conditions become change orders |
| Best for | Remodels, additions, infill, and finish-outs with a set budget | Projects with finished drawings or required public bidding |
How design-build works
You start with a site visit and a budget conversation. Drawings and pricing move together, so each layout decision is made knowing what it costs. Once the design is set, the same team submits permits, schedules the work, and builds it. Our Vargas Street condos followed this path, from a 3D design model through demolition and both finished units.
How design-bid-build works
An architect completes a full set of drawings first. Contractors then bid on that fixed design, and you choose one. You get competing prices on the same plans, but the real cost isn't known until design is finished, and any gap between the drawings and site conditions becomes a change order.
Which should you choose?
Choose design-build if you have a budget to hit, want one accountable team, or are remodeling an older building where surprises are likely, like our El Viejo Camino barn remodel. Choose design-bid-build if you already have complete drawings or must collect public bids. We build either way: bring your plans, or start with us at the sketch stage.
Questions
Common questions
Is design-build faster than design-bid-build?
Usually. Design and pricing overlap instead of running in sequence, and there is no separate bidding phase after drawings are finished, so construction can start sooner.
Is design-build more expensive?
Not inherently. Because the builder prices while the design develops, you avoid drawing a project that later has to be cut back to fit the budget, a common source of added design fees and delay.
When does design-bid-build make sense?
When you already have complete drawings from an architect, or when an owner or public agency is required to collect competitive bids on a finished design.
Can I bring my own architect to a design-build project?
Yes. Many design-build projects start with an owner's architect; the builder joins early to price and coordinate before drawings are finalized.
Who handles permits in design-build?
The design-builder typically prepares and submits the permit package and manages inspections, since it is responsible for both the drawings and the construction.