What a general contractor does
A general contractor is responsible for building the project: hiring and scheduling the trades, buying materials, managing the site, meeting the inspections, and delivering the work described in the contract.
On a typical project, the general contractor receives a set of drawings and specifications from an architect, prices them, and once hired, turns them into a sequence of work. They coordinate the framers, electricians, plumbers, and finish trades, keep the job safe and insured, and answer to the building department. In California, that requires an active license from the Contractors State License Board, usually a B (General Building) classification for homes.
What a general contractor typically does not do is design. When a question in the drawings comes up, it goes back to the architect or engineer, and the answer can take time.
What a design-build firm adds
A design-build firm does everything a general contractor does, plus it takes responsibility for the design. One contract covers both, so there is no gap between the people who draw the house and the people who build it.
That changes how decisions get made. Cost and constructability feed into the design as it develops, rather than arriving as bids after the drawings are done. Questions that come up in the field are answered by the same team that drew the detail. And you have one party to call, rather than two firms who may point at each other.
Some design-build firms employ architects in house; others work with trusted outside architects and engineers under the builder’s direction. Either way, the builder is involved from the first sketch.
How to decide which one you need
The deciding question is how far along your design is. Your starting point usually makes the choice for you.
- You have complete, permitted drawings — hire a general contractor to price and build them
- You have an architect mid-design — bring a contractor in now for pricing and constructability input
- You have an idea and a budget but no drawings — a design-build firm can take you from concept to construction
- You are remodeling an older home — design-build helps, because existing conditions should inform the design
- You want one point of accountability — design-build gives you a single contract for design and construction
What to ask either one before you hire
Whether you hire a general contractor or a design-build firm, the same basics protect you: an active license, real insurance, a clear scope, and a written process for changes.
Check the license on the CSLB website and confirm the classification fits your work. Ask for a certificate of insurance. Ask who will run your job day to day and how often you will hear from them. Ask what the price includes and what it excludes, how allowances are set, and how change orders are priced and approved. A contractor who answers these clearly before the contract will usually communicate clearly during construction.
SAS Builds is a licensed California general contractor (License #1073990) and also delivers design-build, so we can build from your architect’s drawings or carry the project from first sketch through final walkthrough.
How the contract and pricing differ
With a general contractor, you usually sign two agreements: one with your architect for design, and one with the contractor for construction. The construction contract is priced against finished drawings, either as a fixed price, a cost-plus arrangement with a fee, or a guaranteed maximum price.
With a design-build firm, one agreement covers both. Many design-build contracts are structured in phases: a design and pre-construction phase with its own fee, followed by a construction phase priced once the design is far enough along. That structure lets you stop after design if the price does not work, with drawings you can still use.
Whichever you choose, look for the same protections in writing: a defined scope tied to drawings, clear allowances, a payment schedule tied to progress, and a change-order process that requires written approval before extra work begins. Those terms matter more than the label on the firm.
Frequently asked questions
Is a design-build firm the same as a general contractor?
Not quite. Both are licensed contractors who manage construction, but a design-build firm also takes responsibility for the design under the same contract. A general contractor builds from drawings produced by a separate architect or designer. In short, every design-build firm acts as a general contractor, but not every general contractor offers design.
Do I need an architect if I hire a design-build firm?
The design-build firm provides the design, either with in-house architects or by directing outside architects and engineers. You do not need to hire a separate architect, although some owners bring their own and ask the design-build team to coordinate with them. Structural engineering and other specialist reports are still required where the building department calls for them.
What license should a general contractor have in California?
For residential construction that involves more than two unrelated trades, the usual license is the B General Building classification from the Contractors State License Board. You can confirm a contractor’s license status, classifications, bond, and workers’ compensation coverage free on the CSLB website before you sign anything.
Is design-build more expensive than hiring a general contractor?
The design fee is part of the design-build contract rather than a separate architect’s fee, so the total is often comparable. Where design-build tends to save money is in avoiding redesign: because pricing happens as the design develops, a project is less likely to reach permit drawings and then come in far over budget.
Can a general contractor help before the drawings are finished?
Yes, and it is a good idea. Many general contractors offer pre-construction services — pricing, constructability review, and scheduling — while an architect is still designing. Bringing the builder in early is the most reliable way to keep a design aligned with the budget, even when you are not using full design-build.
