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Compare cities: adu (accessory dwelling unit)

Compare ADU cost across California cities, side by side, from public building permits. Cities are sorted by median.

  1. Los Angeles$65,000
    Middle half $35,000 to $120,000 · 33285 permits · 2022-01-01 to 2026-10-31 · Building and Safety - Building Permits Issued from 2020 to Present (N) · checked on: 2026-11-02
  2. Richmond$97,000
    Middle half $64,750 to $140,000 · 191 permits · 2022-01-05 to 2025-04-22 · PermitTrak · checked on: 2026-11-02
  3. San Diego$118,620
    Middle half $67,720 to $194,828 · 5585 permits · 2022-01-03 to 2026-10-30 · Development Permits - approvals issued (set 1) · checked on: 2026-11-02

Read this first. Permit values are self-reported by the applicant to set permit fees. They often leave out materials or labor, and they are not what the contractor actually charged. A quote above or below this range can be reasonable.

Cities without a figure

San Francisco, Anaheim, Corona, Elk Grove, Los Angeles County (unincorporated), Marin County, Sacramento, Santa Monica, Sonoma County, Torrance: not enough usable permits yet.

Full table · Compare another project · How we get our numbers

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