STR rules · verified 1mo ago
Short-term rental rules in San Mateo County, CA
San Mateo County regulates short-term rentals in the unincorporated Coastal Zone only via the Short Term Rental Ordinance (Coastal Zone) administered by the Planning Department. STRs are allowed in R-1 (single-family) and R-3 (multi-family) zones in the unincorporated coastal pockets (Montara, Moss Beach, El Granada, Princeton-by-the-Sea, San Gregorio, Pescadero, Loma Mar) with a permit (approx. $500 fee, 3-4 week processing). Outside the coastal zone, no county STR permit program exists. County TOT (Chapter 5.136) is 10% in unincorporated areas, collected by HdL since Oct 2022. Accessory Dwelling Units are prohibited from STR use; max 180 nights/year per permit; California Coastal Commission has overlay authority on the Coastal Zone ordinance.
What's behind the sign-in
- Registration fees — initial + annual renewal cost, per permit type
- Permit caps + waitlists — exact cap values, current waitlist counts
- Owner-occupancy rules — days/year requirement, permit-class splits
- Zoning carve-outs — which districts allow / disallow STR
- Tax stack — TOT, hotel, county + state layers
- Stay limits — min/max nightly, max nights/year
- Operational requirements — parking, insurance, fire inspection, neighbor notice
- Penalties — per-night fines, revocation thresholds
- City-specific gotchas — HOA carve-outs, pending legislation, recent court rulings
- Refresh on demand — re-run the agentic pipeline against the city's current ordinance
Frequently asked
Are short-term rentals legal in San Mateo County, CA?
San Mateo County is currently restricted for short-term rentals. Permitted but with material constraints — caps, owner-occupancy rules, zoning carve-outs, or active ordinance review. For the actual fees, caps, owner-occupancy rules, and city-specific gotchas, sign in.
Do I need a permit to run an Airbnb in San Mateo County?
Almost certainly yes — almost every U.S. city now requires a short-term rental permit, vacation rental permit, or transient lodging permit before you can legally list. The specifics for San Mateo County (cost, renewal cycle, required documents) are behind sign-in. You can also read the source ordinance directly: https://www.smcgov.org/planning/short-term-rental-permit-coastal-zone.
What happens if I rent without a permit in San Mateo County?
Most cities charge per-night fines (a few hundred to a few thousand dollars per violation), escalating to cease-and-desist letters and platform delisting on repeat. Airbnb and Vrbo now share permit-validation feeds with most major cities, so unpermitted listings get blocked at the platform level. Sign in to see the specific penalty schedule for San Mateo County.
How current is this data for San Mateo County?
This record was verified 1mo ago against the city's published ordinance (.gov or the city's official municipal-code publisher). Cached cities re-verify on a cadence — daily for cities under active legislation, weekly otherwise. Signed-in users can hit Refresh on any city to force a fresh pull. If you're underwriting a deal, always confirm against the city's code-enforcement office before closing.
Can my HOA or condo association ban STRs even if San Mateo County allows them?
Yes. City permits authorize you under municipal law, but your HOA, condo association, or co-op board sets contractual rules that override the city for your unit. Many HOAs adopted blanket STR bans between 2018 and 2024 in response to neighbor complaints. Read the CC&Rs, bylaws, and rental addendums before you buy with an STR plan — the city saying yes does not mean your building says yes.