This guide consolidates local and county rules, taxes, and procedures that apply to short‑term rentals (STRs) in Topanga and the broader unincorporated areas of Los Angeles County (LA County). It is designed for real estate investors evaluating STR opportunities and current or prospective hosts who need a clear, practical roadmap.

Overview: Are short‑term rentals allowed in Topanga?

• In unincorporated LA County outside the California Coastal Zone (CCC):
  • Yes—short‑term rentals are permitted under a county ordinance (adopted in 2024) with a specific framework (see below).
• In Topanga areas within the California Coastal Zone:
  • At present, short‑term rentals are not currently enforced by the county ordinance; county STR registration requirements do not apply in coastal zones, and CCC‑specific STR regulations are still pending.
• Key definitional terms:
  • “Primary residence” is the home where the host actually lives.
  • “Unhosted stays” are rentals where the host is not present.
  • “ADU” refers to accessory dwelling units (e.g., granny flats, backyard cottages).

How to start a short‑term rental business in Topanga (Unincorporated LA County, non‑coastal zone)

1. Determine jurisdiction and coastal zone status

• Confirm whether the property lies within unincorporated LA County and outside the California Coastal Zone. LA County’s STR ordinance applies in unincorporated non‑coastal areas only. Registration requirements do not apply to properties in coastal zones, where STRs are currently unregulated pending future CCC action.

2. Confirm eligibility

• You may operate an STR only at your primary residence (hosts must actually live at the property). Accessory dwelling units (ADUs) cannot be used as STRs.

3. Obtain a Short‑Term Rental Registration Certificate

• Contact the LA County Short‑Term Rental Unit to receive a unique 6‑digit Account Number and Activation Code:
  • Phone: (213) 974‑2011
  • Email: STRental@ttc.lacounty.gov
• Create an account online and submit your application:
  • Portal: lacountystr.munirevs.com
• Pay the registration fee. According to local summaries, the annual registration fee is approximately $914 (confirm current fee with the county).
• Note: The portal also supports Transient Occupancy Tax (TOT) filings.

4. Register for Transient Occupancy Tax (TOT) and file monthly

• Hosts must collect TOT from guests and remit it to the Treasurer and Tax Collector within 30 days after each rental start date.
• TOT registration and filing occur online via the STR portal (lacountystr.munirevs.com).
• TOT is a county tax imposed on short‑term stays (≤30 days). Compliance requires timely collection and remittance.

5. Operate in compliance with the ordinance

• Primary‑residence restriction: Only your primary residence can be used as an STR.
• ADUs are prohibited for STR use.
• Stay limits: Minimum 30‑day minimum stay requirement; plan operations accordingly (the county’s implementing details may include caps on unhosted stays; confirm current requirements in the ordinance and FAQs).
• Occupancy limits: Generally up to 2 guests per bedroom, with a maximum of 12 guests.
• Prohibitions: Commercial events and “party house” rentals are not permitted.
• Platform compliance: Listings must include the STR registration number where required; hosts are responsible for ensuring platforms display valid registration information.

6. Manage complaints and enforcement

• Noncompliance can trigger administrative fines and removal of listings by hosting platforms.
• Neighbors and stakeholders can submit complaints via the county’s STR complaint site or hotline; the county can impose fines up to $1,000 per day on platforms listing unregistered properties.

7. Track updates and temporary suspensions

• LA County may temporarily suspend or adjust certain STR restrictions during emergencies (e.g., wildfire recovery). Confirm current status with the Short‑Term Rental Unit before listing.

Required documents, permits, licenses, and key guidelines

• Short‑Term Rental Registration Certificate

  • Issued annually by the LA County Treasurer and Tax Collector (TTC).
  • Obtain Account Number and Activation Code from the STR Unit (phone/email above).
  • Submit application and fee via lacountystr.munirevs.com.

• Transient Occupancy Tax (TOT) Registration and Monthly Filings

  • Register in the STR portal; file monthly TOT returns and remit taxes within 30 days of each rental start date.
  • Keep records of rental dates, guest nights, and TOT calculations.

• County STR Ordinance and FAQs

  • Review the county’s ordinance and FAQs for primary residence verification, ADU prohibition, minimum stay requirements, occupancy caps, and unhosted stay limits (if applicable). Links are provided below.

• Business License (general)

  • Hosts should confirm whether any additional business licensing applies to their property type and hosting model; consult the county Business License section for current requirements.

• Insurance and safety compliance

  • While the county does not specify coverage amounts in the materials provided, prudent hosts should carry appropriate liability insurance and comply with local fire and safety standards relevant to Topanga’s hillside environment.

Specific regulations for short‑term rentals

Los Angeles County (unincorporated areas, non‑coastal zones)

• Registration required annually before listing or renting.
• Primary‑residence rule: Only the host’s primary residence can be used as an STR.
• ADUs are prohibited as STRs.
• Minimum stay: 30 days; “unhosted stays” are limited per ordinance and FAQs (confirm the current cap and implementation details).
• Occupancy: Up to 2 guests per bedroom; maximum of 12 guests.
• Prohibitions: Commercial events and “party house” rentals are not allowed.
• TOT: Hosts must collect and remit TOT within 30 days of rental start dates.
• Enforcement: Noncompliance can result in administrative fines and removal of listings; platforms can be fined for listing unregistered properties.
• Enforcement scope note: Registration requirements and the ordinance do not apply to properties in coastal zones at this time.

Topanga‑specific context

• Many Topanga areas fall within the California Coastal Commission’s jurisdiction. These properties are not covered by the county’s STR registration requirements while CCC rules are pending.
• Fire and hillside considerations: Hosts should integrate local emergency preparedness, defensible space standards, and neighborhood expectations to reduce risk and maintain goodwill.

California Coastal Commission

• The CCC has jurisdiction over coastal areas. It has signaled that coastal‑zone STR regulations are pending. Until CCC issues specific rules, LA County’s STR registration is not enforced in coastal zones; hosts should monitor CCC updates for coastal‑specific requirements.

State‑level notes (California)

• TOT is a county tax imposed on short‑term accommodations; requirements and rates are set by the county.
• Hosts should stay attuned to state‑level short‑term rental and housing policy developments, as they may influence local rules over time.

Local authority contact information

Los Angeles County Short‑Term Rental Unit (Treasurer and Tax Collector)

• Phone: (213) 974‑2011
• Email: STRental@ttc.lacounty.gov
• Business Hours: Monday–Friday, 8:00 a.m. to 5:00 p.m. PT
• STR Registration & TOT Portal: lacountystr.munirevs.com

Complaints and enforcement

• Online complaint portal: Short‑Term Rentals Online Complaint Website (STR complaint portal, county‑hosted)
• Complaint Hotline (24/7): (213) 371‑1070

Additional resources

• LA County Treasurer and Tax Collector STR page: ttc.lacounty.gov/str
• Transient Occupancy Tax (TOT): ttc.lacounty.gov/tot
• LA County GIS map of unincorporated areas: arcgis app link for unincorporated lookup

Links to source pages and documents

County ordinance and program materials

• LA County Short‑Term Rental Ordinance (May 2024): Short‑Term Rentals Ordinance (PDF)
• LA County STR Terms & FAQs (Oct 2024): Ordinance Terms & FAQs (PDF)
• Proposed STR Ordinance FAQs (Feb 13, 2024): County of Los Angeles Treasurer and Tax Collector Proposed Short‑Term Rental Ordinance FAQs (PDF)

County Board and motion documents

• Supervisor Lindsay Horvath’s motion regarding STR ordinance adjustments (2024): Motion PDF (LACounty SupDocs)

Topanga community summaries

• Topanga Properties overview of new STR rules (Feb 14, 2024): “New Short‑Term Rental Rules in Los Angeles County: What You Need to Know”
• OneTopanga community update (Feb 22, 2024): “Short term rentals update” (includes ordinance highlights and references to the Supervisor motion and TOT FAQ PDF)

Transient Occupancy Tax resources

• TOT Monthly Computation Form (PDF)
• TOT Over Thirty Day Stay Exemption Application (PDF)
• TOT Designated Exemption Application (PDF)
• TOT Registration Application (PDF)
• TOT Refund Claim Form (PDF)

Other compliance tools

• Short‑Term Rentals Online Complaint Website (complaint portal)
• LA County GIS Lookup for Unincorporated Areas (ArcGIS Instant App)

Important notes on current enforcement scope

• County registration does not apply to properties in the coastal zone; CCC has not yet enacted its own STR rules in these areas.
• LA County has issued temporary suspensions or adjustments of certain STR restrictions in wildfire‑affected areas. Hosts should confirm current status with the Short‑Term Rental Unit before listing.

This guide is intended as a concise investor and operator reference based on available materials. For any edge cases—especially coastal‑zone properties or unique land uses—confirm current requirements with the Short‑Term Rental Unit or a qualified local advisor.