California ADU atlas

City dossiers

Every city has its own rulebook.

Open a dossier to see the permit fee, processing timeline, notable local rule, and rent ranges — drawn directly from each city's planning portal and cross-referenced against 2026 state law.

  • 5 cities published More dossiers are scaffolded in admin
  • $4,200 – $8,200 Typical permit fee range
  • 8–26 weeks Permit timeline floor & ceiling
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