California builders

Custom and semi-custom builders in California

California has custom builders who focus on different corners of the state, from Orange County / Coastal OC to Wine Country (Sonoma / Napa / Marin). This roundup lists 4 with region, areas served, and build type called out.

4 builders listed below, grouped by region. Names link to each firm’s site. This is not an endorsement — verify licenses, insurance, and recent references with your lender.

Last updated: . Reviewed by the My Construction Path editorial team.

Orange County / Coastal OC builders

East Bay / Contra Costa builders

Taragano Design & Build

East Bay / Contra Costa · custom / on-your-lot

custom
  • Areas served: East Bay and Contra Costa County (Walnut Creek, Danville, Lafayette, Oakland area)
  • Build type: custom / on-your-lot
  • License: 1143420 (state lookup)

Phone Call Taragano Design & Build at (925) 388-6353

Custom home builder in the East Bay/Contra Costa that builds new homes on the client's empty lot; site cites Diamond Certified quality rating and CSLB #1143420. (taraganobuild.com)

Los Angeles metro builders

Wine Country (Sonoma / Napa / Marin) builders

Brandywine Builders

Wine Country (Sonoma / Napa / Marin) · custom / on-your-lot

custom
  • Areas served: Sonoma, Napa, and Marin Counties
  • Build type: custom / on-your-lot
  • License: 800734 (state lookup)
  • Published price: Custom homes in Marin typically start around $1 million (as stated on site) (as of 2026-11-05; source)

Phone Call Brandywine Builders at (707) 572-4422

Full-service Northern California custom builder with over 20 years of experience building in Napa; manages custom builds on rural and urban lots. (brandywinebuildersinc.com)

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