The Design-Build Process for New Construction in California

What design-build actually means

Design-build is a project-delivery model in which one team carries integrated responsibility for design and construction. In our practice that means architecture, structural, civil, geotech coordination, Title 24, MEP, permitting, and field execution all live under one contract with one accountable team. The alternative — design-bid-build — separates architectural design from a competitively bid construction contract, and concentrates risk at the bidding moment when the owner discovers whether the design is actually buildable for the budget.

Design-build trades the bidding moment for continuous estimating: every design choice is priced as it is made. The trade is a more disciplined design process in exchange for fewer surprises at construction.

The five stages

• 1 · Feasibility

  Written zoning, FAR, overlay, soils, utility, budget-range, and timeline-range memo. Yes/no decision gate before any design fee.

• 2 · Design

  Schematic design → design development with continuous estimating against the target. Architect, structural, civil, geotech, Title 24, and MEP all coordinated under one schedule.

• 3 · Permit

  Plan-check submittal, correction cycles, planning where required, and clearance routing. Sequenced around the city's calendar.

• 4 · Construction

  Fixed-scope, fixed-price contract against a permitted drawing set. Weekly schedule update, monthly owner walk, and written-change-order discipline.

• 5 · Closeout

  Inspections, sign-off, certificate of occupancy, commissioning, owner training, warranty, and a documented as-built package.

Initial consultation and property intake

First conversation is a discovery call — what the owner is trying to accomplish, what the lot looks like, what the realistic budget bracket is, and what the timeline pressures are. From there we pull APN data, jurisdiction confirmation, zoning record, prior permit history, and overlay status before quoting any feasibility fee. The initial intake is a discovery exercise, not a sales pitch.

Lot feasibility and scope definition

Feasibility is the foundation of the entire engagement. The deliverable is a written memo covering zoning (FAR, height, setbacks, lot coverage), overlay status (hillside, coastal, VHFHSZ, HPOZ, historic district), soils and slope screening, utility-capacity screening, parking and access constraints, realistic envelope, and a budget-range / timeline-range memo with named drivers. Scope definition follows from what the lot can actually permit — not from what would be ideal in the abstract.

Consultant coordination — architect, engineers, specialists

Most projects engage several specialized consultants. Design-build sits at the coordination center:

• Owner

  Sets program, finish level, decision pace, and budget tolerance.

• Design-build team

  Coordinates every other party, owns budget discipline, runs the construction.

• Architect

  In-house or external — produces architectural package coordinated against budget from sketch.

• Structural engineer

  Lateral, gravity, and seismic engineering coordinated with foundation/civil.

• Civil engineer

  Grading, drainage, retaining, stormwater, and erosion control.

• Geotechnical engineer

  Soils investigation, foundation recommendation, slope stability — see geotech & drainage page.

• Title 24 consultant

  Energy modeling and code compliance — see Title 24 & CALGreen page.

• City plan check

  Building department and planning department — discretionary and ministerial reviews.

• Subcontractors

  Specialty trades briefed against the integrated drawing set, not a generic spec.

• Inspectors

  City building, planning, fire, public works, and special inspectors as required.

Permit strategy and plan-check discipline

Permit strategy is set at feasibility and refined through design. We name the specific permits and reviews each project will trigger, sequence them, and submit clean packages — because correction-cycle count is the single biggest schedule lever once a project is in plan-check. See the permit-timeline page for the full breakdown.

Preconstruction estimate and contracting

Preconstruction produces a budget that evolves through design — from feasibility bracket to schematic estimate to design-development estimate to final fixed-price construction contract against the permitted drawings. The contract is fixed-scope, fixed-price. Change orders are only initiated by owner-requested scope changes, jurisdictional corrections, or genuinely concealed conditions — and every change is priced in writing before work proceeds.

Construction schedule and mobilization

Construction starts with permit issuance and mobilization: site fencing, temporary utilities, sanitary, erosion control, and staging. The construction schedule is owner-visible from day one and updated weekly. Lender draw cadence (on construction-to-permanent loans) is sequenced into the schedule, not bolted on.

Inspections and closeout

Phase inspections (foundation, framing, MEP rough, insulation, drywall, final), HERS verification, fire and public-works clearances, and the final certificate of occupancy are sequenced through the construction calendar. Closeout includes commissioning of systems, owner training, the documented as-built package, and the warranty handoff.

Why design-build reduces surprises

• Budget surprises

  Continuous estimating during design — not 30–50% bid overruns at the end.

• Unclear scope

  Integrated drawing set + integrated trade briefings — not 'whatever the GC interprets'.

• Permit delays

  Clean coordinated submittals reduce correction-cycle count, which is where the calendar slips.

• Change orders

  Written, priced, and approved before work proceeds — not back-billed at closeout.

• Owner decision bottlenecks

  Written 'decisions due' calendar keyed to the construction sequence so on-time decisions do not become change orders.

Why preconstruction feasibility is the anchor

Most owners who feel burned by a previous project were burned at the same place: they committed to a design before anyone confirmed the lot could permit it for the budget. Preconstruction feasibility is the single highest-leverage spend on the project — it costs days, not weeks, and it tells the owner what the realistic envelope, budget, and timeline are before any major commitment.

Frequently asked questions

Is design-build the same as a general contractor doing the design?

No. Design-build does not require the contractor to also draw plans. It requires the architectural, engineering, and construction packages to be coordinated under one accountable team — with one budget, one schedule, and one set of decision gates.

Can you work with our architect?

Yes. Multi-consultant coordination is the norm at the custom and luxury bracket. The contract structure assigns clear scope boundaries and decision rights to each discipline.

What is the first step?

A written preconstruction feasibility review. It covers zoning, overlays, soils screening, utility-capacity screening, a realistic envelope, and a budget-range / timeline-range memo with named drivers — so the owner can make a yes/no decision before committing to design.

Is the construction price fixed?

The construction contract is fixed-scope and fixed-price against an agreed permitted drawing set. Change orders are only initiated by owner-requested scope changes, jurisdictional corrections, or genuinely concealed conditions — and every change is priced in writing before work proceeds.

How does design-build affect the schedule?

Indirectly — design-build does not shorten city review, but disciplined coordination reduces correction-cycle count at plan-check, which is where the calendar actually slips. Owner-decision discipline reduces field-driven change orders, which is where construction calendars slip.

Does design-build cost more or less than design-bid-build?

It depends on how you measure. Design-build typically has a higher preconstruction line item and a much lower change-order line item, with a much smaller variance between estimate and final cost. Total-cost-at-completion is typically lower or comparable, with far fewer surprises.

Will you support a construction-to-permanent loan?

Yes — including lender-approved budgets, AIA G702/G703 or equivalent draw packages, lien releases, photographic evidence, and inspection coordination. We sequence the construction schedule against the lender's draw cadence.

What if we want to start with a smaller scope?

Feasibility-only is a stand-alone engagement. Owners commonly buy a feasibility memo, weigh the result, and decide whether to continue. No design or construction commitment is required to engage feasibility.

What jurisdictions do you work in?

Active service areas are Los Angeles County (City of LA / LADBS and the contract cities) and the nine-county San Francisco Bay Area. Outside those regions we will refer you to a vetted peer rather than stretch the team.

Official sources

• California Building Standards Commission ↗

  California DGS

  California Building Code, CALGreen, and reference standards governing design-build delivery.

• California Energy Commission — 2025 Energy Code ↗

  California Energy Commission

  Title 24, Part 6 baseline effective for permits filed on/after January 1, 2026.

• LADBS — Plan Check & Permit ↗

  City of Los Angeles

  City of LA plan-check process governing permit-stage coordination.

• San Francisco DBI ↗

  City and County of San Francisco

  San Francisco building inspection process governing Bay Area permit-stage coordination.

• CSLB License Lookup ↗

  California Contractors State License Board

  Verify CSLB #1098432 directly with the source.

Related pages

• California New Construction hub →

  Statewide overview of ground-up residential design-build.

• New Construction Cost →

  How preconstruction discipline keeps the budget honest.

• Permit Timeline →

  How design-build coordination shortens plan-check correction cycles.

• Custom Homes →

  The most common project type delivered under design-build.

• Small Multifamily (2–6 unit) →

  Investor design-build delivery for 2–6 unit infill.