Sonoma County, the heart of California's wine country (Russian River, Healdsburg, Sonoma Valley, Sebastopol), regulates short-term lodging in unincorporated areas as either Vacation Rentals (VR - whole house, owner not present, 30 days or less) or Hosted Rentals (HR - rooms within an owner-occupied dwelling). Operators must complete a four-part approval: (1) a Vacation Rental Zoning Permit issued by Permit Sonoma under Sonoma County Code Chapter 26 Section 26-88-120, (2) a Vacation Rental Business License under Chapter 4 Article VIII (added by Ordinance 6427, adopted May 16, 2023), (3) a Transient Occupancy Tax (TOT) certificate from the Sonoma County Treasurer-Tax Collector under Chapter 12 Article III, and (4) designation of a 24/7 Certified Vacation Rental Property Manager who must respond to complaints within one hour from 7 a.m. to 9 p.m. and within 30 minutes from 9 p.m. to 7 a.m. Ordinance 6423 (adopted April 24, 2023) created the Vacation Rental Exclusion (X) Combining District, which either prohibits new VR permits outright or caps them at 5 percent or 10 percent of single-family homes in identified West County (Russian River corridor including the Cazadero / Highway 116 area), Sonoma Valley, and Healdsburg-area neighborhoods. Existing permits in X zones may continue but expire on sale or transfer. The incorporated cities of Healdsburg, Sonoma, Santa Rosa, and Windsor have prohibited new whole-house vacation rentals; Sebastopol limits whole-house rentals to 30 nights per calendar year; Petaluma allows up to 90 nights. Junior ADUs (less than 500 sq ft within a single-family residence) may not be used as vacation rentals.
Sonoma County administers vacation rentals in the unincorporated area through three County Code chapters working together. Chapter 26 (Zoning Code) Section 26-88-120 sets the zoning use, performance standards, and combining-district eligibility; Chapter 4 Article VIII (added by Ordinance 6427, May 16, 2023) imposes the annual Vacation Rental Business License and operating standards; and Chapter 12 Article III imposes the 12 percent Transient Occupancy Tax authorized by Sonoma County voters under Measure L (2016). The land-use framework was relocated and updated by Ordinance 6386 (adopted August 22, 2022).
DEFINITIONS. A 'Vacation Rental' is the rental of a private residence in its entirety, with no owner-occupant present, for periods of 30 consecutive days or less. A 'Hosted Rental' is the rental of a single sleeping room or sleeping area within a single-family dwelling occupied by the property owner as a primary residence. The two are administered as separate permit types with different zoning eligibility.
WHERE VACATION RENTALS ARE ALLOWED (unincorporated county). Permit Sonoma allows VRs as a conditional/permitted use in the Coastal Zone, Agricultural and Resources zones (AR, RR, DA, LIA, LEA), the Planned Community Resort/Recreation (PCRR) district, and on existing single-family residences in C2, LC, and K zones. VRs are PROHIBITED in the R1 (Low Density Residential) and higher-density R2/R3 zones, on parcels under Williamson Act contracts, in Accessory Dwelling Units, and in any parcel within an Exclusion (X) Combining District.
VACATION RENTAL EXCLUSION (X) COMBINING DISTRICT. Created by Ordinance 6386 (2022) and applied to specific parcels by Ordinance 6423 (April 24, 2023), the X overlay either excludes new vacation rentals entirely or caps them at 5 percent or 10 percent of single-family dwelling units in defined neighborhoods. Ordinance 6423 rezoned parcels in the 1st (Sonoma to Bennett Valley), 4th (Fulton to Cloverdale), and 5th (West County / Russian River) supervisorial districts. Specific named X areas include Drake Road, Neeley Road, Gates Road, Glen Ellen, Kenwood, and Waldruhe Heights (total exclusion); Chiquita Road, Fitch Mountain (outside Healdsburg), Hughes Chicken Colony (near the City of Sonoma), and Austin Creek (near Guernewood Park) (5 percent cap). The Cazadero / Highway 116 corridor and other lower Russian River neighborhoods were identified during the rulemaking record as areas of high VR concentration with limited evacuation routes prone to flooding and landslides; specific parcel-level designation is shown on the Permit Sonoma Vacation Rental Map Viewer and Official Zoning Database (OXD). In an X zone, existing legally permitted vacation rentals may continue to operate, but the permit expires upon sale or transfer of the property and no new applications will be accepted. Hosted Rentals remain permitted in X zones.
PERFORMANCE STANDARDS (Section 26-88-120). Maximum overnight occupancy is two persons per sleeping room plus two additional persons per property, capped at twelve persons total. On-site parking: at least one space for two-bedroom rentals and at least two spaces for three- or four-bedroom rentals, plus a maximum of one on-street parking space. Outdoor amplified sound is generally prohibited; outdoor lighting must comply with County lumens limits and avoid spillover onto neighboring parcels. A Property Information Sign with a 24/7 emergency contact phone number, parking location, occupancy limit, garbage pick-up day, and quiet hours must be posted at the rental and provided to abutting neighbors. Junior ADUs (less than 500 sq ft within a primary single-family residence) may NOT be used as vacation rentals.
BUSINESS LICENSE (Chapter 4, Article VIII; Ordinance 6427). Effective for new applications after the May 16, 2023 adoption, every operator must hold an annual County Vacation Rental Business License in the name of a natural person (NOT an LLC, corporation, or trust trustee acting in a business capacity) who owns the property; one license per person. The license requires designation of a Certified Vacation Rental Property Manager who must respond to complaints within ONE HOUR between 7:00 a.m. and 9:00 p.m. and within 30 MINUTES between 9:00 p.m. and 7:00 a.m. (commonly called the 30-minute night rule).
TRANSIENT OCCUPANCY TAX (Chapter 12, Article III). Operators must register with the Sonoma County Treasurer-Tax Collector and obtain a TOT Certificate before accepting reservations. The combined unincorporated-county rate is 14 percent: 12 percent County Transient Occupancy Tax (raised from 9 percent to 12 percent by voter-approved Measure L in 2016) plus a 2 percent Sonoma County Tourism Business Improvement Area (BIA) assessment. Stays of 31 or more consecutive days are exempt. Returns are filed monthly. Marketplace platforms (Airbnb, Vrbo) collect under voluntary collection agreements but the operator remains responsible for compliance.
INCORPORATED CITIES (separate jurisdictions). Operators inside city limits must comply with that city's program, NOT the County's: Healdsburg, City of Sonoma, Santa Rosa, and Windsor have all closed new whole-house vacation rental applications and grandfathered limited inventories (hosted rentals are typically still allowed). Sebastopol caps whole-house rentals at 30 nights per calendar year unless owner-occupied; Petaluma allows up to 90 nights per year for whole-house rentals. Each city has its own TOT and business license. Cloverdale, Cotati, and Rohnert Park have their own programs as well.
STATE PREEMPTION (CALIFORNIA GOVERNMENT CODE 65852.2 / 65852.22). California's state ADU statute (Gov. Code 65852.2) requires every local agency to allow at least one ADU and one Junior ADU on a single-family lot, and Gov. Code 65852.2(a)(6) authorizes (but does not require) a city or county to impose a 30-day minimum rental requirement on permitted ADUs - which Sonoma County uses to exclude ADUs and JADUs from vacation-rental use without violating state law. Detached ADUs built before the 2017 state ADU reforms that already held a vacation rental permit may be grandfathered; check the parcel's permit history through Permit Sonoma.
Operating a vacation rental in unincorporated Sonoma County without an active Vacation Rental Zoning Permit issued under Chapter 26 Section 26-88-120 violates the Sonoma County Zoning Code and is enforceable by Permit Sonoma Code Enforcement, which may issue stop-work orders, administrative citations, and civil penalties for each day of violation. Operating without a current Vacation Rental Business License under Chapter 4 Article VIII (Ordinance 6427) is a separate violation enforceable by the County and may result in license denial, suspension, or revocation, and accumulated administrative fines. Submitting a new vacation rental application for a parcel within a Vacation Rental Exclusion (X) Combining District, or attempting to renew or transfer a permit upon sale of an X-zone property, will be denied as a matter of law under Ordinance 6423. Failure to register with the Treasurer-Tax Collector for a TOT Certificate, or failure to collect and remit the 12 percent County TOT plus 2 percent BIA assessment under Chapter 12 Article III, exposes the operator to back taxes, interest, and civil penalties; willful failure to remit collected tax is grounds for permit revocation. Failure of the designated Certified Property Manager to respond to verified complaints within the required one-hour daytime or 30-minute nighttime window is grounds for citation, escalating fines, and license revocation under Chapter 4 Article VIII; three valid complaints within a 12-month period typically trigger revocation review. Renting a Junior ADU as a vacation rental violates the County's ADU short-term rental prohibition. Inside the cities of Healdsburg, Sonoma, Santa Rosa, Windsor, Sebastopol, or Petaluma, operating without that city's required permit is enforced by city code enforcement and is governed by city-specific penalty structures. Owners listing on Airbnb, Vrbo, or other platforms must include a valid Sonoma County permit number in the listing under the County's advertising standards; listings without a permit number are subject to platform takedown and County enforcement.
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