The three delivery models
Design-bid-build is the traditional path: you hire an architect or designer, pay for finished drawings, then put those drawings out to several contractors and sign a second contract with the winner. Design-build is one contract with a firm that designs and builds; pricing starts in the first sketch and tightens as the drawings do. The hybrid most San Diego homeowners actually use is bringing an architect's drawings to a design-build firm that then handles interiors, cabinetry, engineering coordination and construction.
Who holds which contract, and where the risk sits
In design-bid-build, the architect is responsible for the design and the contractor for building what was drawn; when the two disagree about a detail or a hidden condition, the homeowner sits between them and usually pays the change order. In design-build the same firm drew it and is building it, so a discrepancy is theirs to resolve inside the contract. That is the practical meaning of 'one accountable team'.
The trade-off is independence. An architect hired separately has no stake in the construction price and will push a design idea harder; a design-build firm will tell you early what it costs, which some owners experience as restraint and others as honesty.
What changes in the design phase
With design-build the budget is a design input from day one. Cabinet lines, tile allowances, appliance tiers and structural options are priced while they are still choices, so the drawings that go to permit match the budget that was agreed. Swell packages this as a design and scope phase with a fee that is credited to the build when you proceed, published on the cost guide.
When to hire an architect separately
Do it when the architecture is the project: a second story, a significant addition, a historic property with design review, or a house where you want a specific architect's hand. Do it when you want multiple contractors to bid finished drawings. Either way, bring the builder in before the drawings are final; a constructability review on paper is far cheaper than one in framing.
How Swell runs design-build
Swell Contracting is a design-build general contractor (CSLB B #970145) with an in-house cabinet workshop and an in-house flooring division (Tidal Flooring, C-15 #1002910). Kitchens, baths, whole-home remodels and ADUs run as one scope and one schedule, with the cabinets and floors made or installed by the same company rather than coordinated across three subcontracts. Owners who already have an architect bring the drawings; Swell prices them, builds, and supplies the cabinetry and flooring.