Marin County · CA
Can you keep backyard chickens in San Anselmo, CA?
Yes, handled administratively. San Anselmo adopted the Marin County animal standards, so a backyard flock of hens is allowed up to 12 with no roosters, and the higher end of that range can require an administrative permit and the consent of adjacent neighbors. A noise and smell nuisance standard applies whether or not you hold a permit, so a clean, well-vented henhouse genuinely matters here. We confirm the exact by-right number for your address.
San Anselmo, CA · at a glance
- Hens allowed
- Up to 12 under the adopted Marin County standards; smaller flocks by right, larger flocks can need an administrative permit and adjacent-neighbor consent
- Roosters
- Not permitted (excluded under the adopted County standards)
- Setback
- May require a Minor Exception; confirm for your parcel
- Permit
- Handled administratively; needed to reach the higher end of the flock range
- HOA
- Check your CC&Rs
Confirmed against San Anselmo's municipal code. Your personalized report applies it to your exact parcel. Sources: sananselmo-ca.granicus.com · library.municode.com · sananselmo.gov
San Anselmo sits on the sunny floor of the Ross Valley, with the wooded Sleepy Hollow hills rising to the north. Down on the valley flats it's warm, level and about as easy as Marin gets for a henhouse. Up in the hills it's shade, slope and more wildlife. We build for whichever San Anselmo you're in.
Setbacks and placement
On the flat valley lots we plan afternoon shade and creek-corridor drainage. Up in Sleepy Hollow we level a pad and plan for heavier wildlife pressure, since coyotes, deer and the occasional bobcat move along the open-space edge there. Raccoons work the creek through the whole town, so the buried apron is standard.
Neighbors
Valley-floor lots in San Anselmo can sit close, so a quiet rooster-free flock and a clean, well-vented henhouse keep neighbors comfortable, and the town's nuisance rule on smell and noise makes that more than a courtesy. Reaching the higher end of the flock range can also mean getting your adjacent neighbors' consent.
Climate
San Anselmo runs warm and sunny by Marin standards, sheltered inland from the coastal fog, so the valley floor gets real summer heat and needs proper shade and water. Winters are mild and wet, and the San Anselmo Creek corridor can run damp, so flat lots near it want good drainage.
Predators in San Anselmo
The local predators worth planning for are Raccoons, Coyotes, Hawks, Skunks. Every Modern Hen install is built to handle them: half-inch hardware cloth on every opening, a buried apron, a hardware-cloth ceiling and two-step latches a raccoon can't open.
A quick-start checklist
- Start small by right, or get neighbor consent and an administrative permit toward the 12-hen cap
- Read your CC&Rs if you're in an HOA
- On the valley floor, plan summer shade and cool water
- In Sleepy Hollow, level the pad and plan for heavier wildlife pressure
- Predator-proof for creek-corridor raccoons and hillside coyotes
- Keep the henhouse clean and well-vented to stay clear of the nuisance rule
Want the exact rules for your address?
We'll read your municipal code and send a plain-language report on what's allowed at your parcel. One email, no follow-ups.