Overview: Yes—short-term rentals are allowed in Los Alamos, California. Los Alamos is an unincorporated community in Santa Barbara County, so short‑term rental (STR) operations are governed by Santa Barbara County’s Short‑Term Rental Ordinance and related county permits (homestay permit or STR land‑use permit), not municipal rules. Unhosted STRs require zoning approval for transient lodging; homestays (hosted stays) are subject to separate permitting and operational conditions. Investors should begin with the county’s permitting portal and tax registration process before listing or hosting any guests.

How to start a short-term rental business in Los Alamos, CA

1. Confirm jurisdiction and zoning

• Confirm the parcel is inside unincorporated Santa Barbara County and determine its zoning. Whether you can run an unhosted STR depends on zoning (transient lodging must be permitted at the subject property); homestays follow county rules and do not require zoning approval for transient lodging use.
• Verify the zoning and parcel details through Santa Barbara County resources and ensure the property is not within an incorporated city where municipal STR rules would apply.

2. Choose the correct permit path

• Homestay permit: Use this when you or a qualifying long‑term tenant will live on the property during guest stays. The host must reside on site, and county rules limit the number of bedrooms offered and set safety and operational conditions.
• STR land‑use permit: Required for unhosted rentals, but only if zoning allows transient lodging. If your zoning does not permit transient lodging, you cannot operate an unhosted STR. A formal land‑use review and potential public notice/appeal process may apply.

3. Prepare required documents

• Floor plan showing bedrooms, smoke and carbon‑monoxide detectors, and exits.
• Site plan illustrating off‑street guest parking and safe access paths.
• Proof of ownership or a long‑term tenant host residency (for homestays).
• A written nuisance and complaint response plan; designation of a 24/7 local contact person who can respond on site.
• Safety compliance details for building and fire standards, consistent with county requirements.

4. Apply online through the county portal

• Submit permits via the Accela Citizen Access online system used by Santa Barbara County Planning & Development.
• Register for an account, complete the relevant application, upload documents, and pay fees. Monitor the record for review requests, public notices, and inspections.

5. Track review, notices, inspections, and decisions

• County review may trigger neighbor notifications and a comment/appeal window.
• Expect inspection(s) to verify compliance. After final approval, conditions of approval become operational obligations (posting permit numbers, contact requirements, and occupancy limits).

6. Register for Transient Occupancy Tax (TOT)

• If you operate a homestay or STR, you must register with the County Treasurer‑Tax Collector and collect TOT from guests.
• In 2024, voters approved Measure H, increasing the TOT rate to 14 percent in unincorporated Santa Barbara County. Secure your Transient Occupancy Registration Certificate before listing or hosting.

7. List and operate

• Post the permit number and Good Neighbor information inside the property.
• Include the permit number in public listings.
• Maintain a current 24/7 local contact and promptly respond to complaints and county inquiries.
• For homestays, the host must reside on site during stays. Do not exceed the permitted bedroom count or violate occupancy limits.

Required documents, permits, licenses, and guidelines

Permits and approvals

• Homestay permit: Homestay is a hosted use and requires county permit. Conditions include on‑site hosting, bedroom caps, and safety measures. Confirm the bedroom cap and other operational limits on the current county forms before publishing listings.
• STR land‑use permit: Unhosted STRs require zoning approval for transient lodging; obtain planning approvals and comply with all permit conditions before hosting.

Online permit submission

• Accela Citizen Access system (Santa Barbara County Planning & Development). The system is the official route for planning applications and permits.

Transient Occupancy Tax

• Register with the Santa Barbara County Treasurer‑Tax Collector and collect TOT.
• Current TOT rate for unincorporated Santa Barbara County: 14 percent (Measure H, 2024).
• Obtain and post your Transient Occupancy Registration Certificate and comply with filing/remittance schedules.

County materials to review

• County’s Short‑Term Rental Ordinance (program overview and application materials).
• County’s Homestays FAQ (definitions, caps, operational expectations).
• County’s Transient Occupancy Tax information (registration, rate, filing).

Specific regulations for short-term rentals (county and state)

County rules (Santa Barbara County)

• Zoning requirement for unhosted STRs: Transient lodging must be a permitted land use by zoning at the property location. Where zoning does not allow transient lodging, unhosted STRs are prohibited.
• Homestay requirements: Hosted operation, 24/7 local contact, nuisance response plan, safety compliance, and bedroom caps. Confirm cap and occupancy limits on current county forms.
• Permit conditions: Post permit number inside the unit; include permit number in listings; maintain current contact information; respond promptly to complaints and county inquiries.
• Public notice/appeals: Depending on the permit type, county review may require neighbor notification and a comment/appeal window.

State rules (California)

• Transient Occupancy Tax (TOT): Hosts must register and collect TOT from guests, then remit to the county tax collector on schedule.
• Registration/fees: Obtain the county TOT registration certificate before hosting any guests.
• Recordkeeping and compliance: Maintain records of bookings, taxes collected, and remittances, and cooperate with county audits or inquiries.

Enforcement (regional context)

• Santa Barbara County enforces permits, conditions, and TOT collection within unincorporated areas. Regionally, enforcement programs have expanded, including within the City of Santa Barbara, underscoring the importance of compliance for operators in the broader area.

Contact information for the local authority in charge of STRs

Santa Barbara County

• Department: Planning & Development (Permitting)
• Online portal: Accela Citizen Access (planning applications and permits)
• Permitting and STR program resources: Short‑Term Rental Ordinance page; Homestays FAQ
• Department webpage for TOT: Transient Occupancy Taxes (Treasurer‑Tax Collector)
• Notes: For homestays and unhosted STRs in the unincorporated county (including Los Alamos), county approvals and TOT registration apply.

Links to source pages

• Santa Barbara County Short‑Term Rental Ordinance: www.countyofsb.org/776/Short-Term-Rental-Ordinance
• Santa Barbara County Homestays Frequently Asked Questions: www.countyofsb.org/777/Homestays-Frequently-Asked-Questions
• Santa Barbara County Transient Occupancy Tax information: www.countyofsb.org/886/Transient-Occupancy-Taxes
• County guidance for STR owners (local press recap): www.independent.com/2025/04/01/santa-barbara-county-provides-guidance-for-short-term-rental-owners/
• Measure H coverage (TOT rate increase to 14%): www.kclu.org/2024-11-06/central-and-south-coast-voters-approve-transient-occupancy-tax-hikes-to-beef-up-community-services
• County online permitting system update (Accela): www.independent.com/2023/06/16/county-of-santa-barbaras-planning-and-development-department-launches-new-online-permitting-system/
• City of Santa Barbara STR enforcement (regional context): santabarbaraca.gov/press-releases/short-term-rental-enforcement-pilot-program-launches-today
• Regional enforcement coverage (Avalara): www.avalara.com/mylodgetax/en/blog/2024/05/santa-barbara-extends-short-term-rental-enforcement-program.html
• Ordinance history coverage (2017 ban context): www.independent.com/2017/10/05/santa-barbara-county-bans-short-term-vacation-rentals-neighborhoods/

Summary of requirements

• Jurisdiction: Unincorporated Santa Barbara County governs Los Alamos STRs.
• Permit types: Homestay (hosted) vs. STR land‑use (unhosted); zoning determines eligibility for unhosted STRs.
• Documents and process: Floor/site plans, ownership/tenancy proof, nuisance response plan, safety details; apply via Accela; inspections and neighbor notices may occur.
• Taxes: Register with the County Treasurer‑Tax Collector; collect and remit 14% TOT.
• Operations: Post permit number, maintain a current 24/7 local contact, and follow all permit conditions and county rules.