Skip to content
LIVE · Studio ·Vol. I ·California Residential Design-Build ·ADUs · Custom Homes · Multifamily ·License & insurance details on request ·CSLB #1156772 ·Starting $250K ·10–16% ROI ·San Francisco · HQ ·Bay Area ·Los Angeles ·LIVE · Studio ·Vol. I ·California Residential Design-Build ·ADUs · Custom Homes · Multifamily ·License & insurance details on request ·CSLB #1156772 ·Starting $250K ·10–16% ROI ·San Francisco · HQ ·Bay Area ·Los Angeles ·
GoldenStateADU

San Francisco Bay Area · Ground-up Residential

Bay Area New Construction Contractor — Custom Homes, Luxury Homes, Hillside & Small Multifamily

Custom homes, luxury homes, hillside builds, and 2–6 unit small multifamily across the nine-county San Francisco Bay Area — design-build delivery against the city-by-city permit patchwork.

Request a Bay Area preconstruction feasibility reviewCheck what your Bay Area lot can build →

CSLB #1156772 · License & insurance details on request

Quick Answer

Bay Area ground-up construction is governed city-by-city: San Francisco DBI runs one of the most demanding plan-check processes in California; Peninsula cities like Palo Alto, Menlo Park, and Atherton run discretionary design review; East Bay hillside cities add geotech and fire-zone layers. A serious Bay Area project starts with a written feasibility against the specific jurisdiction.

Who this is for

  • Peninsula owners planning custom homes in Palo Alto, Menlo Park, Atherton, Los Altos, Hillsborough, or Woodside.
  • San Francisco owners weighing teardown rebuild against major remodel under DBI rules.
  • East Bay and Marin hillside owners in Oakland Hills, Berkeley Hills, Orinda, Mill Valley, or Tiburon.
  • Investors evaluating SB9 or small multifamily infill in qualifying neighborhoods.

City-by-city permit complexity

There is no single 'Bay Area permit' — the nine-county region runs dozens of independent building and planning departments, each with its own plan-check cadence, design-review process, and hillside / fire / coastal overlays. San Francisco's DBI is its own world. Peninsula cities like Palo Alto, Menlo Park, Atherton, and Los Altos run discretionary architectural review for most new homes. East Bay cities (Oakland, Berkeley, Albany) add their own seismic and hillside layers.

We name the specific jurisdiction and the specific reviews in the feasibility brief instead of generalizing across the region.

Peninsula custom and luxury homes

Peninsula custom homes — Palo Alto, Menlo Park, Atherton, Los Altos, Portola Valley, Hillsborough, Woodside — typically combine large lots with discretionary architectural and design review, neighbor-notification windows, and aggressive tree-protection ordinances. Budget and schedule are driven by design review and by the construction-market labor stack as much as by the build itself.

Luxury homes in these markets push higher per-sq-ft costs because of envelope quality, indoor/outdoor integration, complex MEP, and high-end finish coordination — not because of square footage alone.

San Francisco — DBI and Planning

San Francisco residential new construction goes through both the Department of Building Inspection (DBI) and the Planning Department. SF's plan-check timelines are longer than most other Bay Area cities, and many projects trigger discretionary planning review (rear-yard, neighborhood notification, sometimes Discretionary Review at the Planning Commission).

We sequence SF projects around the discretionary calendar, not against it.

Hillside, geotech, and seismic

East Bay (Oakland Hills, Berkeley Hills, Orinda, Lafayette), Marin (Mill Valley, Tiburon, Sausalito), and Peninsula hillside parcels add geotech, slope-stability, drainage, and access layers. The Bay Area's seismic hazard maps — Alquist-Priolo earthquake fault zones and Seismic Hazard Zones (liquefaction, landslide) — change foundation and structural requirements when a parcel falls inside them.

All-electric and the 2025 California Energy Code

Many Bay Area cities have adopted local 'all-electric' or 'natural-gas-prohibited' new-construction reach codes on top of the statewide Title 24 baseline. Berkeley's original ban was overturned, but newer city ordinances structured as building-code amendments remain in force in several jurisdictions. The 2025 California Energy Code (Title 24, Part 6), effective for permits filed on/after January 1, 2026, also strengthens heat-pump and electric-readiness expectations.

We design to the actual local code in force at permit filing — not a generalized 'Bay Area' assumption.

Utility upgrades and neighbor/staging constraints

PG&E service upgrades, EBMUD or Hetch Hetchy water service, and sewer lateral conditions can add months to a Bay Area construction schedule. Tight Peninsula lots add staging and neighbor-protection constraints — protected trees, neighbor light/air, and construction-hour ordinances that vary city by city.

Small multifamily and SB9 in the Bay Area

Bay Area SB9 feasibility varies sharply by city — local implementation ordinances differ on setbacks, frontage, parking, and exemptions. Small multifamily (2–6 units) on R-zoned infill parcels is increasingly viable in San Jose, Oakland, and parts of San Mateo and Alameda counties. We screen SB9 and small-multifamily feasibility against the current state statute and the specific local ordinance.

Frequently asked questions

Do you work across all nine Bay Area counties?
Yes — San Francisco, San Mateo, Santa Clara, Alameda, Contra Costa, Marin, Sonoma, Napa, and Solano. We confirm jurisdictional detail per project.
How long does a custom home take in the Bay Area?
Typical range is 24–42 months brief-to-keys. Discretionary planning, design review, and hillside engineering push the longer end. San Francisco DBI projects sit at the longer end almost by default.
Do you work in Palo Alto, Menlo Park, and Atherton?
Yes — these are core Peninsula markets. Expect architectural review board involvement and longer discretionary timelines than most other Bay Area cities.
How much does Bay Area new construction cost?
Honest 2026 ranges land roughly $625–$1,200+ per sq ft turnkey for Peninsula custom single-family, with luxury and hillside builds pushing higher. The cost page breaks out the drivers.
Do you handle all-electric requirements?
Yes. We design to the local reach code in force at permit filing — heat pumps for space and water heating, induction-ready kitchens, and electric-readiness rough-ins where required.
Can you support discretionary planning hearings?
Yes — we sequence the design and the budget against the discretionary calendar and prepare hearing-ready documentation when required.
Do you do small multifamily in the East Bay or San Jose?
Yes — 2-unit, 3-unit, fourplex, and 5–6 unit infill on qualifying R-zoned parcels. Feasibility starts with the specific local ordinance.

Official sources

Related pages

Request a Bay Area preconstruction feasibility review

We start every ground-up engagement with a written preconstruction feasibility review — before any contract is signed.

Request a Bay Area preconstruction feasibility review
§ One question for you

What's the build you're picturing?

Two sentences is enough. A principal will read it, pull your parcel, and reply with a real answer — never a brochure.

  • Read and answered by a principal
  • Parcel-specific reply, not a templated PDF
  • Within one business day
  • 240
    California builds
  • 4 hr
    Avg reply today
  • $0
    For the brief
A principal is online · Replies todayNo spam · Unsubscribe anytime