Fremont allows rainwater barrels and cisterns for landscape irrigation. Barrels up to 5,000 gallons do not need a permit. ACWD offers rebates for qualifying systems.
California law (AB 1750, Rainwater Capture Act of 2012) authorizes residential rainwater harvesting from rooftops for outdoor non-potable use. Fremont follows state rules: rain barrels and cisterns up to 5,000 gallons capacity do not require a building permit as long as they are freestanding, not elevated on structural supports, covered with a mosquito-resistant screen, and used for landscape irrigation only. Larger systems, elevated or integrated cisterns, and any connection to an indoor plumbing system require a building and plumbing permit under the California Plumbing Code Chapter 17. Rainwater cannot be used for drinking or food prep without full treatment. Alameda County Water District offers periodic Bay Save rebates for rain barrels (typically 25 to 100 dollars per barrel) and larger cisterns. Overflow must drain to landscape, not off-site.
Contact your local code enforcement office for specific penalty information.
Fremont, CA
Fremont limits leaf blower use to daytime hours and must comply with California AB 1346 banning sales of new gas blowers statewide as of 2024.
Fremont, CA
Fremont limits industrial noise to 70 dBA at commercial property lines and 55 dBA at abutting residential lines under FMC Chapter 5.30.
Fremont, CA
Fremont treats persistent dog barking as a public nuisance under FMC Chapter 6, with Animal Services investigating complaints and issuing citations.
Fremont, CA
Fremont permits wood, masonry, vinyl, and metal fences but restricts barbed wire, electric fencing, and combustible materials in fire-hazard zones.
Fremont, CA
Retaining walls over 3 feet high require engineered permits in Fremont, with extra scrutiny for Mission Peak and Hayward Fault slope areas.
Fremont, CA
Fremont prohibits exotic and wild animals under California Code of Regulations Title 14 Section 671 and FMC Chapter 6, preempting most exotics.
Side-by-side rule comparisons with other cities in Alameda County.
See how other cities in Alameda County handle rainwater harvesting.
See how Fremont's rainwater harvesting rules stack up against other locations.
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