Municipality
Name
Category
Type
Effective Date
Fort Bragg (City)
Movable Tiny Home as ADU
Zoning Code
ADU
04/25/2022
Fresno (City)
Tiny House On Wheels as Backyard Cottage
Zoning Code
ADU
01/09/2016
Humboldt (County)
Movable Tiny House as ADU
Zoning Code
ADU
07/03/2021
Los Angeles (City)
Movable Tiny House as ADU
Zoning Code
ADU
01/01/2020
Mendocino (County)
Moveable Tiny Homes as Primary Residence or ADU
Zoning Code
ADU and SF
09/10/2024
Nevada (County)
Tiny Homes on Wheels allowed as Primary Residence or Secondary
Zoning Code
ADU and SF
01/14/2025
Oakland (City)
Vehicular Residential Facilities Permitted in all Residential Zones
Zoning Code
ADU, RV, and SF
01/19/2022
Placer (County)
Movable Tiny Home as ADU, Primary Unit in certain Zones and Cluster Lot Development
Zoning Code
ADU, PUD, and SF
07/14/2022
Riverside (City)
Movable Accessory Dwelling Units (MADU)
Zoning Code
ADU
07/05/2022
San Benito (County)
Tiny House in Residential and ADU zoning
Zoning Code
ADU and SF
03/31/2024
San Diego (City)
Movable Tiny House as ADU
Zoning Code
ADU
10/01/2020
San Jose (City)
Tiny House On Wheels as ADU
Zoning Code
ADU
05/29/2020
San Luis Obispo (City)
Recreational Vehicles as Tiny Houses in Residential Zones
Zoning Code
ADU and RV
11/01/2018
Santa Clara (County)
Movable Tiny Homes as ADUs
Zoning Code
ADU
03/10/2020
Santa Cruz (County)
Tiny Homes on Wheels-One Per Parcel
Zoning Code
ADU
12/06/2022
Sonoma (County)
Tiny House as ADU
Zoning Code
ADU
04/15/2023
Statewide
State Accessory Dwelling Unit Code
Zoning Code
ADU
01/01/2017
Statewide
State Residential Building Code
Building Code
IRC
01/01/2020
THIA will be constantly updating the legislation data. Check back often. Suggest A Correction if you are aware of any missing or incorrect information. AND keep scrolling to learn more about getting guidance.
Key
Category
Building Code — Legislation that speaks to how to construct a tiny house.
Zoning Code — Legislation that speaks to how the lot will be used.
Type
ADU — Accessory Dwelling Unit
DMV — Division of Motor Vehicles
IB — Industrialized Buildings
IRC — International Residential Code
PUD — Planned Unit Development
RV — Recreational Vehicle
SF — Single Family Dwelling
T — Transitional Housing
UDO — Unified Development Ordinance
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