Before You Build in Fillmore, CA: Permit & Rule Checklist (2026)

Fillmore requires building permits for retaining walls over 4 feet in height with structural engineering plans. Walls supporting a surcharge (driveway, structure, or slope above) may require permits at lower heights. Retaining walls are common in hillside areas north of town.

Fillmore requires building permits for fences exceeding 6 feet in height. Standard residential fences of 6 feet or less typically do not require a permit but must comply with zoning setback and height standards. Retaining walls over 4 feet from grade require engineered plans.

California Building Code requires pool barriers of at least 60 inches with self-closing, self-latching gates. Fillmore enforces these requirements through building permit inspections. At least one additional safety feature (pool cover, alarms, or self-closing doors) is also required.

California's Good Neighbor Fence Act (Civil Code §841) applies in Fillmore, requiring adjacent property owners to share equally in the cost of maintaining boundary fences that benefit both properties. The finished side of the fence must face outward.

Fillmore's zoning ordinance typically allows 6 ft fences in side and rear yards, and 3–4 ft in front yard setback areas for residential zones. Verify exact limits with Community Development.

California's Swimming Pool Safety Act requires all residential pools in Fillmore to have barriers, compliant drain covers, and at least one additional safety feature. Pool owners are responsible for maintaining all safety equipment in working condition.

Swimming pool construction in Fillmore requires a building permit from Community Development. The permit process includes plan review for setbacks, barriers, electrical, plumbing, and safety features. Multiple inspections are required during construction.

Hot tubs and spas in Fillmore require an electrical permit for the dedicated circuit and must comply with pool safety barrier requirements if the water depth exceeds 18 inches. Locking safety covers can substitute for some barrier requirements for spas.

All swimming pools in Fillmore must be enclosed by a barrier at least 60 inches high with self-closing, self-latching gates per California Building Code. This applies to in-ground, above-ground, and permanent spa installations. Additional safety features are also required.

Above-ground pools in Fillmore with walls 18 inches or higher above grade require compliance with California's pool barrier and safety standards. Pools exceeding certain sizes may require a building permit. All pools must have a barrier preventing unsupervised child access.

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.

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.

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.

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.

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.

Recreational fire pits in Fillmore must comply with Ventura County Fire Protection District standards. Portable fire pits must be at least 15 feet from structures and combustible materials. Permanent fire pits may require a permit. VCAPCD no-burn days must be observed.

Open burning in Fillmore is regulated by the Ventura County Air Pollution Control District (APCD). Debris burning requires APCD authorization; Spare the Air days prohibit all open burning.

Fillmore requires property owners to maintain trees to prevent hazards to pedestrians, vehicles, and utility lines. Street trees may require city permission before trimming. Private trees that overhang public rights-of-way must maintain minimum clearance of 8 feet over sidewalks and 14 feet over streets.

Fillmore's water supply comes from local groundwater in the Santa Clara River watershed. The city enforces water conservation measures including irrigation day/time restrictions during drought conditions. Outdoor watering is typically limited to specific days and prohibited during the heat of the day.

Tree removal in Fillmore may require a permit for protected or significant trees. Check with Community Development for species-specific or development-related tree removal requirements.