Ask who should remodel your house in Austin and you get company names. The question underneath, which nobody puts first, is how you want the job run: one contract covering both the design and the construction, or an architect or designer who produces drawings that you then take out to contractors. The two routes put the risk in different places, and the right answer depends on the project.
The difference is the number of contracts
The Design-Build Institute of America, the trade body for the method, puts the distinction plainly: in all other project delivery methods there are separate contracts for design and construction, and the single contract for both is the fundamental difference. DBIA also describes design-build as more than a sole-source contract, calling it as much a mindset as a process and a fully integrated undertaking.
Worth saying out loud: DBIA promotes design-build. Its definition of the contract structure is simply what the words mean, and that is why it is quoted here. Its claims about outcomes, that the method brings fewer changes, fewer claims and less litigation, earlier knowledge of firm costs and risk allocated to whoever can best manage it, are its own case for its own method. Treat them as a position, not a verdict.
Where each route puts the risk
With separate contracts, you hold two relationships. The designer answers for the drawings and the contractor answers for the build. If something in the drawings cannot be built as drawn, or two trades collide in the same cavity, that gap sits between your two contracts and, practically, with you. The upside is real: you own an independent design before anyone prices it, and several contractors bid the same documents, which is the cleanest way to compare numbers.
With one contract, the party that drew it is the party that builds it, so a buildability problem is theirs to solve at their cost. The trade-off is equally real: the design is not independent of the builder, so the discipline you lose is the second opinion. You replace it with harder questions early, and with references on projects of the same shape.
Both routes need drawings and a permit
Neither route skips the paperwork, and people often assume one of them does. Round Rock states that structural modifications such as wall removal require an engineered design, along with one complete set of construction plans covering structural, mechanical, electrical and plumbing changes. Cedar Park requires a permit for any construction that physically changes the property, explicitly including remodels that relocate or remove interior walls.
The calendar does not change either. Round Rock's review runs approximately 30 business days from acceptance and expedited review is not available. Whichever route you take, that period is in your schedule.
One more thing that is the same either way, and it matters: in Texas there is no state licence for general contractors. The City of Austin states that anyone can be a general contractor, including homeowners, and that the general contractor is the responsible individual assigned to the building permit. Whoever holds that permit is on the hook for the work and the inspections, so know whose name is on it before anything starts.
Which one suits the project
The separated route earns its keep when the design is genuinely complex or heavily custom, when an independent designer's judgement is the point, or when you want several contractors pricing one identical set of documents. A ground-up build with an unusual programme is often that project.
The single contract tends to suit work where construction reality drives the design: a whole-home remodel in an older Central Texas house, where what is behind the walls changes the plan, and where a discovery mid-job needs a decision from one party rather than a negotiation between two. DBIA also notes two common variations, one selecting on qualifications and then advancing design and cost together, the other seeking design and cost proposals from a shortlist of qualified firms.
Questions worth asking either way
- How many contracts will I hold, and who answers for a buildability problem
- Who produces the engineered design where walls are coming out
- Whose name goes on the building permit
- How is a discovery behind the walls priced and decided
- References on projects of this shape, in this area
We work across Austin, Cedar Park, Round Rock, Pflugerville, Buda and Kyle, and we are happy to talk through either route, including the one where you bring your own drawings. We are veteran-owned and BBB accredited, we return calls within two hours during business hours, we document every project with photos from start to finish, and there are no surprise costs.
Published Oct 15, 2026