Accessory Structures in Fremont, CA (2026)
9 verified accessory structures rules for Fremont, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Fremont follows CA Gov Code 65852.2: ADUs up to 1,200 sq ft allowed on most residential lots, plus Junior ADUs. Ministerial 60-day review. No owner-occupancy through 2025.
Fremont ADU Rules
Few RestrictionsADU Permits
Fremont processes ADU permits ministerially under Fremont Municipal Code 18.190.005 (effective August 11, 2023) and California Government Code 65852.2. Applications are filed through the Community Development Department / Planning and Building Permit Services. State law requires the city to act within 60 days of a complete application.
Fremont ADU Permit Process (FMC 18.190.005)
Some RestrictionsADU Impact Fees
Under California Government Code 65852.2(f)(3) and FMC 18.190.005, Fremont ADUs under 750 square feet are exempt from all city impact fees. ADUs 750 square feet or larger pay impact fees proportional to the primary dwelling's size. Standard building permit and plan-check fees still apply at any size.
Fremont ADU Impact Fees and 750 Sq Ft Exemption
Few RestrictionsADU Owner Occupancy
Under FMC 18.190.005 and California Government Code 65852.2(a)(8), Fremont does NOT require owner-occupancy for standard ADUs permitted between January 1, 2020 and December 31, 2024. Owner-occupancy is required only for Junior ADUs (JADUs) under Gov. Code 65852.22, with a recorded deed restriction.
Fremont ADU Owner-Occupancy Rules (JADU Only)
Few RestrictionsADU Rental Restrictions
Fremont prohibits short-term rentals (under 30 days) of any ADU under California Government Code 65852.2(a)(6) and FMC 18.190.005. Long-term rentals (30+ days) of an ADU are allowed but are subject to AB 1482 (Cal. Civ. Code 1946.2) just-cause eviction and statewide rent caps. Fremont does not have a local rent-control ordinance.
Fremont ADU Rental Restrictions and 30-Day Minimum
Some RestrictionsShed Rules
Fremont allows backyard sheds up to 120 sq ft without a building permit. Larger sheds need permits and setbacks. Zoning limits rear and side yard coverage.
Fremont Shed Rules
Few RestrictionsGarage Conversions
Fremont allows garage-to-ADU conversions by right under state law without replacement parking. Building permit required. Ministerial 60-day review.
Fremont Garage Conversions
Few RestrictionsCarport Rules
Carports are allowed as accessory structures in Fremont with a building permit. Front-yard carports face design review. Setbacks and height limits apply.
Fremont Carport Rules
Some RestrictionsTiny Homes
Fremont allows tiny homes as ADUs if built to California Residential Code on a foundation. Tiny homes on wheels are regulated as RVs and generally cannot be primary dwellings.
Fremont Tiny Home Rules
Some RestrictionsLooking for Alameda County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Fremont city rules.
Accessory Structures in Alameda County →