TinyHomeNavigator

California guide

Tiny Home and ADU Permit Pathway

Property research, zoning check, concept design, utilities, septic/well review, site plan, building plans, plan check, corrections, approval, and inspections.

Start with the legal category

A small home can be reviewed very differently depending on whether it is a primary dwelling, accessory dwelling unit, junior ADU, manufactured home, modular home, park model, RV, or movable tiny home. Before buying or designing, ask the planning department which category applies to your exact proposal.

Then check the land

Zoning, lot size, setbacks, easements, road access, fire access, flood zones, slope, utilities, sewer, septic, wells, and overlays can matter more than the size of the structure. A beautiful tiny home cannot solve a parcel that lacks a permitted pathway.

State rules do not replace local review

California ADU law creates strong statewide rights, but local objective standards and site conditions still affect design. Tiny homes on foundations can use residential building-code concepts, while tiny homes on wheels often face separate local occupancy and vehicle rules.

  • Property research and APN confirmation
  • Jurisdiction and zoning check
  • Concept design and site plan
  • Utility availability check
  • Septic and well review when sewer or water is not available
  • Building plans and required consultant reports
  • Permit application and plan check
  • Corrections, approval, fees, and inspections

Educational estimate only. Tiny home, ADU, zoning, utility, septic, and building-code rules vary by parcel, city, county, zoning district, overlays, and utility provider. Always confirm with the local planning department, building department, environmental health department, fire authority, and utility provider before buying land, designing, permitting, or building.