Airbnb Rules San Diego: STR License, Primary Residence Limits, and Fines

The San Diego Airbnb Compliance Checklist

• ☐ Confirm Primary Residence Eligibility

  • Verify the property qualifies as the host's primary residence under San Diego Municipal Code Section 98.0616, which restricts whole-home STR permits to primary residences only.

  • Confirm the address matches the host's driver's license, voter registration, or utility bills before submitting any permit application.

• ☐ Obtain the Correct STR License Tier

  • Apply through the San Diego Development Services Department for either a Part 1 (home-sharing, host present) or Part 2 (whole-home, up to 90 nights/year) or Part 3 (whole-home, unlimited nights) license, depending on the intended rental model.

  • Pay the applicable non-refundable processing fee at time of application, fee amounts are set by the City's annual fee schedule, so confirm the current amount directly with the Development Services Department before submitting.

• ☐ Post the License Number on All Listings

  • Display the San Diego STR license number on every platform listing (Airbnb, Vrbo, Booking.com) before accepting any reservation. Listings without a valid license number are subject to removal and fines.

• ☐ Verify Zoning and HOA Restrictions

  • Check the property's zoning designation through the San Diego General Plan. Coastal Overlay Zone properties face additional review under the Local Coastal Program.

  • Review HOA CC&Rs independently, city licensure does not override HOA prohibitions on short-term rentals.

• ☐ Collect and Remit Transient Occupancy Tax

  • San Diego's Transient Occupancy Tax (TOT) rate is 10.5% of gross rental receipts for most properties, with an additional 2% Tourism Marketing District (TMD) assessment applying to many STR operators.

  • Airbnb collects and remits TOT automatically for listings on its platform under its agreement with the City. Hosts using Vrbo or direct booking channels must register with the City Treasurer's Office and remit TOT independently on a monthly or quarterly basis.

• ☐ Install Required Safety Equipment

  • Operational smoke detectors in every sleeping room and in hallways serving sleeping rooms, per California Health and Safety Code Section 13113.7.

  • Carbon monoxide detectors on every floor and outside each sleeping area, per California Health and Safety Code Section 17926.

  • A fire extinguisher accessible within the rental unit.

• ☐ Enforce the Guest Occupancy Limit

  • Cap occupancy at 2 guests per bedroom plus 2 additional guests, consistent with San Diego's STR ordinance.

1. Regulatory Overview

Short-term rental operators in San Diego face compliance obligations at three levels: the City of San Diego municipal code, California state law, and federal tax reporting requirements.

Each layer imposes independent obligations, and satisfying one does not substitute for the others.

The primary governing authority is the City of San Diego Short-Term Residential Occupancy (STRO) Ordinance codified under San Diego Municipal Code (SDMC) Chapter 5, Article 8, Division 5, which took effect on July 1, 2023.

California state law, including the California Transient Occupancy Tax framework under Revenue and Taxation Code Section 7280, establishes the tax collection structure that city rules operate within.

Under SDMC Section 58.110, a short-term rental is defined as the rental of a residential dwelling unit, or any portion of one, for a period of fewer than 30 consecutive days.

Rentals of 30 days or more fall outside STRO jurisdiction entirely and are governed by standard residential tenancy law.

Enforcement authority rests with the City of San Diego Development Services Department (DSD) which processes STRO license applications, and the Code Compliance Division which investigates violations. The DSD coordinates with the City Treasurer's Office on transient occupancy tax remittance obligations.

2. Airbnb License Requirements in San Diego

San Diego's short-term rental registration framework is governed by the Short-Term Residential Occupancy (STRO) Ordinance which took full effect on July 1, 2023.

All hosts operating rentals of fewer than 30 consecutive nights must hold a valid STRO license issued by the City of San Diego Development Services Department (DSD).

STRO License Registration

The ordinance establishes four license tiers based on property type and operator residency.

Hosts must determine their tier before applying, as fees, caps, and renewal conditions differ across categories.

• Tier 1: Home Sharing, you've got to be on-site. There's no cap on how many nights you can rent per year, but the host must physically be present for the entire duration of every guest's stay, including overnight.

• This applies whether you own the property or you're a long-term renter, as long as it's your primary residence.

• Tier 2: Whole-Home Primary Residence: Host may rent the entire unit up to 6 months (180 nights) per calendar year without being present. Property must be the host's primary residence.

• Tier 3: Whole-Home Non-Primary / Mission Beach: No primary residency requirement, but subject to a citywide cap of 1% of total housing units.

• Mission Beach carries a separate sub-cap. Licenses are issued by lottery when demand exceeds supply.

• Tier 4: Extended Stays: Rentals of 21-29 consecutive nights. Minimal restrictions; no primary residence requirement.

Application requirements for all tiers include:

• Proof of Primary Residence: Required for Tier 1 and Tier 2; government-issued ID matching property address or voter registration documentation.

• Business Tax Certificate: Hosts must hold a current City of San Diego Business Tax Certificate before a STRO license is issued.

• License Fee: $207 per year for Tier 1; $369 per year for Tiers 2, 3, and 4 (as of the July 2023 fee schedule).

Platforms including Airbnb and Vrbo are required under the ordinance to collect and remit the Transient Occupancy Tax on behalf of hosts and to remove listings that lack a valid STRO license number. Operating without a license exposes hosts to fines of $100 to $5,000 per violation per day under San Diego Municipal Code Section 98.0730.

3. How to Stay Compliant Before Listing a Property

San Diego does not maintain a formal prohibited buildings list or classify residential properties into legally distinct STR categories the way New York City does under its Multiple Dwelling Law.

Property eligibility is governed by three separate frameworks: San Diego Municipal Code Chapter 5, Article 9, Division 7 (effective July 1, 2023).

Local zoning ordinances administered by the San Diego Development Services Department; and, where applicable, HOA bylaws or condominium association rules.

Zoning and Land Use Restrictions

The San Diego Development Services Department enforces zoning conditions that can prohibit STR activity regardless of whether a host holds a valid STRO license.

Hosts must confirm their parcel's zoning designation before applying.

• Residential Zones: Single-family and multi-family residential zones generally permit STR operation subject to STRO licensing and owner-occupancy rules.

• Agricultural and Open Space Zones: STR use may be prohibited outright or require a separate conditional use permit.

• Coastal Overlay Zone: Properties within the Coastal Overlay Zone are subject to additional California Coastal Commission jurisdiction, which can impose restrictions independent of city licensing.

HOA and Condominium Restrictions

A valid STRO license does not override a governing document that prohibits short-term rentals.

Hosts operating inside an HOA or condominium association must obtain written confirmation that STR activity is permitted under current CC&Rs before submitting a city license application.

Enforcement of HOA restrictions is a civil matter between the association and the owner. The city will not intervene.

4. Key Airbnb Restrictions San Diego Hosts Should Know

Host Presence Requirements

San Diego Municipal Code Section 98.0616 divides short-term rentals into two tiers based on whether the host is present.

Whole-home STRs (Tier 2): the host need not be on-site during the guest stay, but the property must be the host's primary residence, defined as the address where the host resides for more than six months per calendar year.

Non-primary-residence rentals are prohibited under the current framework unless the property qualifies under the limited Tier 3 mission beach overlay.

Annual Day Limits

Tier 2 primary-residence rentals don't have a hard calendar cap. It's a bit confusing. While the official limit is 365 days, the real restriction is that the property must be your actual primary residence, which means you can't just operate it as a full-time, year-round hotel.

In short, don't get hung up on the day count. The city's focus is on your residency status, not a simple number on a calendar, which is why hosted Tier 1 home-sharing rentals are also completely unrestricted by day count.

Council File 22-0245 proposed a 90-day annual cap on Tier 2 rentals. As of May 2026, that amendment has not passed, but the file remains open.

Guest Count Limits

San Diego's STR ordinance does not specify a citywide maximum occupancy formula at the municipal code level. Occupancy limits default to the property's building permit capacity and any conditions attached to the individual STR license.

Standard enforcement baseline: two guests per bedroom plus two additional guests is the figure the San Diego Police Department applies when responding to noise or overcrowding complaints, though this is operational guidance rather than codified law.

Minimum Stay Thresholds

Good news for hosts. The city's official Airbnb rules San Diego framework doesn't impose any minimum-stay requirement. This means one-night bookings are perfectly fine across all tiers.

But that's not the whole story. Your own HOA might have its own rules, like a strict 7-day minimum stay, which operate completely separately from the city's license conditions.

Don't get caught off guard, always check your CC&Rs.

5. Tax Obligations

City Taxes

State Taxes

Total Combined Tax Rate: 10.5% TOT on gross rental receipts, plus applicable state and federal income tax on net rental income.

Platform Collection Requirements

Airbnb, Vrbo, and Booking.com are required to collect and remit San Diego's 10.5% TOT directly to the City Treasurer on behalf of hosts for bookings processed through their platforms, under agreements effective since January 1, 2021.

Hosts who book exclusively through these platforms are not required to file separate TOT returns for those transactions, but must retain platform remittance confirmations for a minimum of four years.

Tax Filing Requirements

Hosts who accept direct bookings outside platform channels must register with the San Diego City Treasurer's Office and file TOT returns quarterly.

Late filings carry a penalty of 25% of the tax due, plus 1.5% monthly interest under Municipal Code Section 35.0118.

Hosts operating under an active Short-Term Residential Occupancy (STRO) permit are already registered for TOT purposes and no separate tax registration is required.

6. Safety and Building Code Requirements

Mandatory Safety Equipment

San Diego Municipal Code Chapter 9, Article 8 and California Fire Code Title 19 govern safety equipment requirements for short-term rentals.

• Smoke Detectors: Required in every sleeping room, outside each sleeping area, and on every floor per California Residential Code Section R314.

• Carbon Monoxide Detectors: Required in units with attached garages, gas appliances, or fossil-fuel-burning equipment under California Health and Safety Code Section 17926.

• Fire Extinguisher: Minimum 2A:10B:C rated extinguisher required on each floor.

• Emergency Egress: All sleeping rooms must have one operable window or door meeting CRC Section R310 dimensions.

Building Compliance

The San Diego Development Services Department enforces occupancy and structural standards for STR units.

• Certificate of Occupancy: The unit must be permitted for residential use, as unpermitted sleeping spaces constitute a zoning violation.

• Electrical Compliance: No exposed wiring, overloaded circuits, or non-GFCI outlets near water sources.

• Structural Habitability: No active code enforcement orders at time of STR permit issuance.

7. Booking Platform Requirements

San Diego has enacted formal platform-level mandates under San Diego Municipal Code Section 31.0401 effective January 1, 2023.

Booking platforms operating in the city are legally required to verify host registration and submit transaction data to the City Treasurer's Office.

Verification Requirements

• Registration Verification: Platforms must confirm a valid San Diego STR permit number before listing a property or processing bookings, per SDMC Section 31.

• Listing Removal: Platforms must remove or block any listing that lacks a verified permit number within 10 days of notification from the City.

Reporting Requirements

• Quarterly Transaction Reports: Platforms must submit guest stay data, including rental amounts, dates, and permit numbers, to the City Treasurer quarterly, per SDMC Section 31.

• Platform Penalties: Non-compliant platforms face fines of $1,000 per violation per day under SDMC Section 31.0402.

San Diego Municipal Code Section 98.0730, which governs short-term residential occupancy permits, does not contain a provision that prohibits advertising an STR prior to a booking transaction occurring.

The City's enforcement authority attaches at the point of operating without a valid permit, not at the point of publishing a listing.

General consumer protection rules under California Business and Professions Code Section 17500 apply to false advertising across all commercial activity, but these are not STR-specific advertising prohibitions.

8. Penalties for Violating San Diego Airbnb Rules

Civil Penalties

San Diego Municipal Code Section 31.0401 authorizes the Development Services Department (DSD) to issue administrative citations for short-term rental violations.

Fines accumulate per violation, per day.

• Operating without a valid STRP license: Up to $1,000 per day for a first offense; up to $5,000 per day for repeat violations within 36 months

• Exceeding occupancy limits: Up to $1,000 per day per violation

• Failure to collect or remit TOT: Penalties up to 25% of unpaid tax plus interest under SDMC Section 35.0111

• Operating outside permitted license tier: Up to $5,000 per violation, with each rental night counted separately

Enforcement Mechanisms

The DSD uses multiple detection methods, not just complaint response.

Hosts operating without a license number displayed on platform listings are identifiable through routine audits.

• Platform data sharing: Booking platforms transmit listing data to the city under SDMC Section 31.0404, including host identity and rental frequency

• Complaint-driven inspections: Neighbor complaints routed through the city's Get It Done app trigger DSD field investigations

• Proactive monitoring: Third-party scraping tools flag active listings without a visible license number

• TOT audit cross-referencing: The City Treasurer matches TOT remittances against platform-reported revenue to identify under-reporting

Registration Denial and Revocation

The DSD may deny an initial application or revoke an existing license on any of the following grounds:

• Three or more substantiated violations within a 12-month period under SDMC Section 31.0406

• Material misrepresentation on the license application

• Unpaid civil penalties or outstanding TOT liability at the time of renewal

• Zoning non-compliance confirmed by DSD after issuance

9. Special Considerations

Accessory Dwelling Units (ADUs)

San Diego has expanded ADU construction since 2020, but STR eligibility depends entirely on the host's primary residence designation.

Under San Diego Municipal Code Section 141.0302, an ADU may qualify for an STR permit only if the owner occupies either the ADU or the primary dwelling unit on the same parcel as their principal residence.

An ADU on a non-owner-occupied parcel is ineligible for any STR permit category.

• Common conflict point: Hosts who rent out the primary unit long-term while listing the ADU as an STR, this arrangement fails the owner-occupancy test under both structures.

• Common conflict point: Newly constructed ADUs subject to deed restrictions or affordability covenants that prohibit STR use regardless of permit status.

• Consequence: Operating without a valid permit draws fines starting at $100 per day, with escalating penalties for repeat violations.

Condominiums and Hoa-governed Properties

City permits do not override HOA governing documents.

A condominium association's CC&Rs may prohibit rentals shorter than 30 days regardless of whether the City would otherwise grant an STR permit.

• Common conflict point: CC&Rs that define "residential use" in ways that exclude transient occupancy.

• Common conflict point: HOA boards that have adopted STR bans after the host purchased the unit, creating retroactive conflicts.

• Consequence: HOA violations can result in fines, forced cessation of rentals, and civil litigation independent of any City enforcement action.

Historic District Properties

Properties within San Diego's historic districts face no STR-specific restrictions beyond standard permit requirements.

Historic designation affects physical alterations, not rental activity.

Hosts must still meet all standard Airbnb rules San Diego imposes under the STRO, including owner-occupancy and permit requirements.

10. Exemptions

Several property types and tenancy structures in San Diego operate outside the Short-Term Residential Occupancy (STRO) ordinance entirely.

• Stays of 30 consecutive days or more: Classified as standard residential tenancies under California Civil Code and not subject to STRO licensing, TOT collection, or occupancy caps.

• Licensed hotels and motels: Properties operating under a Transient Occupancy Registration Certificate are governed by separate municipal code provisions, not the STRO framework.

• Bed and breakfast inns: B&Bs with an active City of San Diego business license and conditional use permit operate under distinct land use regulations and are exempt from STRO permit requirements.

• Student housing and institutional dormitories: University-affiliated housing operated by accredited institutions is not regulated under the STRO ordinance.

• Owner-occupied RVs and vehicles: Mobile dwelling units are not covered by residential STR restrictions under the current ordinance.

11. Legislative Developments

San Diego's STR ordinance framework was last substantively amended effective July 1, 2023 when the tiered permit structure and owner-occupancy requirements took full effect under Municipal Code Chapter 5, Article 8, Division 8.

No pending bills or proposed reforms affecting STR regulation in San Diego were enacted or publicly introduced through May 2026.

The San Diego City Council has not introduced new STR-specific legislation since the 2022 ordinance revisions. Regulatory attention has instead focused on enforcement capacity and platform data-sharing compliance under the existing framework.

The City Treasurer's Office has indicated administrative rulemaking on permit audit procedures, but no formal ordinance amendments are pending as of the last updated date.

Hosts should monitor the City Council's docket directly, as STR permit caps and owner-occupancy rules have historically been subject to revision without extended public notice periods.

12. Resources and Contact Information

Government Agencies

City of San Diego Development Services Department (DSD)

• Address: 1222 First Avenue, San Diego, CA 92101

• Phone: (619) 446-5000

• Registration Portal: San Diego STRO permit portal

City of San Diego Treasurer's Office (TOT Administration)

• Address: 1200 Third Avenue, Suite 100, San Diego, CA 92101

• Phone: (619) 615-1545

Filing Complaints

Suspected violations of San Diego's short-term rental ordinance can be reported through the following channels:

• Online: Get It Done San Diego portal at getitdone.sandiego.gov

• Phone: (619) 236-5500 (Code Enforcement)

• After-Hours Noise Complaints: San Diego Police non-emergency line at (619) 531-2000

Disclaimer

This isn't legal advice. San Diego’s short-term rental regulations are notoriously complex and they change, as we saw with the rollout of the new Short-Term Residential Occupancy (STRO) ordinance.

It's absolutely critical that you consult with a qualified lawyer and a tax pro to make sure you're compliant. Things change fast. You are responsible for keeping up.