Accessory Structures in Fillmore, CA (2026)
5 verified accessory structures rules for Fillmore, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Fillmore allows ADUs in all residential zones per CA Gov Code §65852.2. Detached ADUs up to 1,200 sq ft (state min 800 sq ft), 16 ft max height, 4 ft side/rear setbacks. Architectural styling must match primary residence.
accessory-structures/adu-rules
Some RestrictionsShed Rules
Sheds and accessory structures must comply with Fillmore's zoning setbacks. Structures under 120 sq ft typically do not require a building permit but must meet setback requirements.
accessory-structures/shed-rules
Few RestrictionsGarage Conversions
Garage conversions to ADUs are allowed under CA Gov Code §65852.2. No replacement parking is required for conversions within ½ mile of transit. Building permit required.
accessory-structures/garage-conversions
Some RestrictionsCarport Rules
Fillmore Municipal Code (FMC) Chapter 6 requires building permits for carports as accessory structures. Carports must meet setback requirements of the underlying zone and cannot exceed lot coverage maximums. Open-sided carports under 200 sq ft attached to a residence may qualify for a simplified permit process through Community Development.
Fillmore Carport Regulations
Some RestrictionsTiny Homes
Tiny homes on permanent foundations in Fillmore are regulated as ADUs under California Government Code §65852.2 and must meet California Building Code standards. Tiny homes on wheels are classified as recreational vehicles and cannot be used as permanent dwellings in residential zones.
Fillmore Tiny Home Regulations
Some RestrictionsLooking for Ventura County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Fillmore city rules.
Accessory Structures in Ventura County →