Tiny home rules in Simi Valley, CA β covering tiny houses on wheels (THOWs), park model RVs, and tiny home on foundation builds β determine where they are legal and how they get permitted.
Tiny homes on foundations in Simi Valley are regulated as ADUs or standard dwellings and must meet California Building Code requirements. Tiny homes on wheels are classified as RVs and may not be used as permanent residences on residential lots.
Tiny homes on permanent foundations in Simi Valley are regulated as accessory dwelling units under California Government Code 65852.2 and must meet all building code requirements for habitable space. They must obtain building permits and comply with ADU size, setback, and height standards. Tiny homes on wheels (THOWs) are classified as recreational vehicles under California law and may not be occupied as permanent residences on residential lots. THOWs may be stored on residential properties subject to RV parking rules but cannot be connected to utilities for habitation. Prefabricated and modular tiny homes that are HCD-certified may qualify for streamlined permitting. Factory-built homes must display the HCD insignia of approval.
Living in a tiny home on wheels on a residential lot is a zoning violation. Unpermitted tiny homes on foundations are building code violations subject to stop-work orders and removal. Using a THOW as a permanent dwelling results in Code Enforcement action with fines starting at $100 per day.
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Side-by-side rule comparisons with other cities in Ventura County.
See how other cities in Ventura County handle tiny homes.
See how Simi Valley's tiny homes rules stack up against other locations.
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