California's SB 346 went into effect this year, and it's already changing how cities enforce short-term rental rules. The law requires Airbnb, VRBO, and every other booking platform to hand over host data directly to local governments. Name, address, number of nights booked, registration status. All of it.
If you run an STR in the Bay Area and you've been flying under the radar on permits or night caps, that window just closed.
I manage short-term rentals across the South Bay. We've been tracking SB 346 enforcement since the bill was signed, and the rollout is faster than most hosts expected. San Francisco has already started using the data to identify and remove non-compliant listings at scale. Other cities are following.
What data are platforms sharing?
Under SB 346, booking platforms must provide cities and counties with the following information for every listing in their jurisdiction:
- Host name and contact information
- Property address
- STR permit or registration number (or lack thereof)
- Number of nights booked per calendar year
- Whether the listing is for an entire home or a shared/private room
This isn't a one-time report. Cities can request updated data on a regular basis. The platforms are required to comply within a set timeframe. Airbnb, VRBO, and Booking.com have all confirmed compliance.
For hosts, this means your booking history is no longer private between you and the platform. If your city has a 90-night cap and you've booked 120 nights, they'll know. If you're operating without a permit, they'll know that too.
Where enforcement stands right now
Here's the current status across key Bay Area cities:
| City | STR Permit Required? | Annual Night Cap | Using SB 346 Data? | Enforcement Level |
|---|---|---|---|---|
| San Francisco | Yes ($250 fee) | 90 nights (unhosted) | Yes, actively | Aggressive — removing non-compliant listings |
| San Jose | Yes (business license) | None currently | Requesting data | Moderate — focusing on unpermitted listings |
| Oakland | Pending (spring 2026) | 90 nights (proposed) | Not yet | Low — rules still being finalized |
| Mountain View | Yes | 180 nights | Planning to request | Low-moderate |
| Palo Alto | Yes | None | Not yet | Low |
| Santa Clara | Yes | None currently | Planning to request | Low-moderate |
| Sunnyvale | Yes | None | Not yet | Low |
| Campbell | No specific STR ordinance | N/A | N/A | Minimal |
Enforcement status as of April 2026. Policies are evolving rapidly. Check your city's planning department for the most current requirements.
San Francisco is the clear leader in enforcement. The city has been using SB 346 data requests to cross-reference listings against its permit database and is actively removing listings that don't comply. If you operate in SF without the required registration, expect a notice.
Oakland is the one to watch. The city has been trying to regulate STRs for nine years. City staff presented a plan this spring that would legalize short-term rentals for the first time but with strict limitations: hosts can only list their primary residence, not investment properties, with a 90-night annual cap. Council hearings are expected this spring.
What this means for South Bay hosts
For hosts in San Jose, Sunnyvale, Mountain View, and surrounding cities, the immediate risk is lower than in SF. Most South Bay cities haven't started actively pulling SB 346 data yet. But "not yet" is the operative phrase. The infrastructure is in place. When your city decides to enforce, the data is already there.
Get ahead of it now.
Get your permits in order. If your city requires an STR permit or business license and you don't have one, apply now. The 2026 California rental law changes post covers the permit landscape across South Bay cities. Most applications take 2 to 4 weeks to process.
Track your nights. If your city has a night cap (or is considering one), you need a system for counting booked nights. We build this into our management platform automatically. If you're self-managing, a simple spreadsheet updated after each booking will keep you compliant. Don't rely on the platform's reporting alone — discrepancies happen.
Check your TOT remittance. Transient occupancy tax compliance is one of the first things cities check when they pull SB 346 data. San Jose charges 10%, Palo Alto 14%, Mountain View 10%. If your platform isn't remitting TOT on your behalf (Airbnb does in most California cities; VRBO does in some), you're responsible for filing and paying directly. Back taxes plus penalties add up fast.
Consider professional management. A cohost who operates across multiple jurisdictions tracks compliance as part of the service. Permits, TOT, night caps, insurance — we handle all of it. When regulations change, and in California they change constantly, your listing stays compliant without you having to monitor every city council meeting.
The World Cup is coming to Levi's Stadium in June, and the revenue opportunity for South Bay STR hosts is significant. But you can only capture that demand if your listing is legally operational when it matters. Getting flagged by SB 346 enforcement right before the biggest booking event in South Bay history would be an expensive mistake.
Want to make sure your listing is compliant before enforcement ramps up? Get a free rental analysis that includes a full compliance review for your city. Or call me at (408) 813-8001.
Sources
- California Short-Term Rental Laws: 2026 City-by-City Guide — Awning
- Short Term Rentals San Francisco: 2026 Rules & Permits Guide — Guestable
- Oakland Had a Plan to Regulate Airbnbs and Vrbos. Why Has It Taken 9 Years? — The Oaklandside
- New State Law Helps Cities Get Short-Term Rental Information from Airbnb, VRBO — Best Best & Krieger
Ready to optimize your property?
Get a professional evaluation of your property's STR revenue potential, completely free.
Start Partnership