Overview: Are STRs allowed?

• Carmel Valley (unincorporated Monterey County): Short‑term rentals are strictly regulated and, in many sub‑areas, banned. Starting October 14, 2024, all STR operators in unincorporated Monterey County must register for a vacation rental license ($965) and obtain a county business license before operating. New county rules limit STRs to single‑family dwellings, cap commercial STRs in certain areas, and ban them entirely in Big Sur, the Carmel Highlands, and residential portions of Carmel Valley and Moss Landing. Existing operators must be in compliance by April 14, 2025 (or by permit expiration/within seven years, whichever comes first). Penalties can reach $5,000 per day and permit revocation. Listings must display the license number; marketplaces must remove noncompliant ads within 10 days or face fines. Transient Occupancy Tax (TOT) registration, collection, and filing are mandatory, and third‑party platforms do not collect TOT for Monterey County hosts.
• Carmel‑by‑the‑Sea (city): Short‑term rentals are prohibited in the residential (R‑1) district. In the commercial districts (CC, SC, RC) and the R‑4 district, only two pathways exist: (i) Legal Nonconforming permits (pre‑2019, transferable with the land, no expiration), and (ii) new Housing Incentive Permits (one STR allowed only when the developer creates three new rental units, with affordability and size requirements and a conditional use permit). All permitted STRs require one off‑street parking space per unit. Advertising unpermitted STRs is prohibited. Carmel’s STRs are defined as stays under 30 consecutive days and are subject to TOT.

Important: Carmel‑Valley real estate straddles both jurisdictions. Carmel‑by‑the‑Sea’s city limits cover only a small core area; most residential neighborhoods and gated communities in “Carmel Valley” are unincorporated Monterey County. Investors must confirm the subject property’s jurisdiction before committing capital.

How to start an STR in this market Step-by-step (actionable)

1. Confirm jurisdiction

• Determine whether the property is inside the City of Carmel‑by‑the‑Sea or within unincorporated Monterey County. The county’s rules apply to almost all of Carmel Valley outside the city limits.

2. If in unincorporated Monterey County

• Confirm zoning and eligibility: STRs are limited to single‑family dwellings. Check whether the parcel is in a banned zone (Big Sur, Carmel Highlands, and residential areas of Carmel Valley and Moss Landing).
• Obtain county vacation rental license: Required starting October 14, 2024. Fee: $965. License number must appear on all listings, ads, and contracts.
• Obtain a county business license: Required before operating.
• Register for Transient Occupancy Tax (TOT): Obtain a TOT certificate; collect TOT from guests; file returns. Monterey County platforms do not collect TOT for you.
• Compliance program:
  • Designate a 24/7 property manager who can respond and arrive on‑site within 30 minutes.
  • Send a neighbor notification letter (within 300 feet) with STR type, contact, and license number.
  • Observe local quiet hours; prohibit outdoor amplified sound.
  • Fire safety: No outdoor fire pits/fireplaces; follow all fire and life safety rules.
  • Health/solid waste, occupancy, and parking standards apply.
• Plan for caps: In inland planning areas, commercial STRs are capped at 4% of housing stock; coastal zone caps (4%) are subject to California Coastal Commission approval.
• Timing: New operators after October 14, 2024 must be licensed before listing. Existing operators must come into compliance by April 14, 2025 (or earlier if their permit expires/within seven years).

3. If inside Carmel‑by‑the‑Sea

• R‑1 district: Short‑term rentals are prohibited; no new permits are available.
• Commercial or R‑4 districts (CC, SC, RC, R‑4):
  • Legal Nonconforming: If a permit existed prior to Ordinance 2019‑03, it is valid in perpetuity and transfers with the land (not relocatable).
  • Housing Incentive Permits: New STRs may only be permitted as part of a housing creation incentive. One transient rental unit is allowed for every three new rental units created on the site; one low‑income and one moderate‑income unit are required, with minimum 650‑sf sizes for two of the units. Requires a conditional use permit; must maintain one off‑street parking space per STR unit.
• Advertising: Unpermitted transient rentals may not be advertised. Violations are enforceable under city code.
• Taxes: Carmel‑by‑the‑Sea collects TOT; follow city registration and remittance requirements.

4. HOA and CC&R review

• Review HOA rules, CC&Rs, and lease covenants for rental restrictions. Some communities impose minimum rental terms (e.g., 30 days) and owner‑occupancy conditions that supersede or add to local rules.

5. Build compliance operations

• Establish guest screening, House Rules, check‑in/out protocols, and a complaints‑response system aligned with the 30‑minute arrival requirement (county).
• Implement revenue management that reflects affordability covenants (for Housing Incentive Permits in Carmel‑by‑the‑Sea).

Required documents, permits, licenses, and guidelines Unincorporated Monterey County (Carmel Valley outside city limits)

• Vacation Rental License (county) — $965 fee; license number required on listings.
• County Business License — required before operating.
• Transient Occupancy Tax (TOT) Certificate — registration with the Treasurer‑Tax Collector; ongoing collection and filing.
• Neighbor notification letter — within 300 feet; include STR type, contact, and license number.
• Property manager designation — 24/7 availability; ability to respond on‑site within 30 minutes.
• Compliance with fire, health/solid waste, occupancy, quiet hours, and parking standards; outdoor amplified sound prohibited; outdoor fire pits/fireplaces banned.
• Advertising compliance — license number on all ads and contracts.

City of Carmel‑by‑the‑Sea

• Legal Nonconforming Transient Rental Permit (if pre‑existing; runs with land; transferable; no expiration).
• Housing Incentive Permit — conditional use permit tied to creation of three new rental units with affordability and size requirements; one off‑street parking per STR unit.
• TOT registration and remittance (city).
• Parking requirement — one off‑street space per STR unit.
• Advertising restrictions — unpermitted STRs may not be advertised.

State of California (applies across both jurisdictions)

• TOT/Transient Occupancy Tax — collection and remittance to the applicable local authority (Monterey County or City of Carmel‑by‑the‑Sea).
• Health, safety, and building code compliance — local enforcement; state minimums apply.
• Consumer protection and tax transparency — standard California requirements.

Specific regulations by jurisdiction Monterey County (unincorporated Carmel Valley)

• License and registration: Vacation rental license required starting 10/14/2024; county business license required prior to operating; TOT registration mandatory.
• Eligibility: STRs limited to single‑family dwellings.
• Banned areas: Big Sur, Carmel Highlands, and residential areas of Carmel Valley and Moss Landing.
• Caps: Commercial STRs capped at 4% of housing stock in inland planning areas; coastal zone cap at 4% subject to California Coastal Commission approval.
• Operational requirements: 24/7 property manager able to arrive within 30 minutes; neighbor notification within 300 feet; quiet hours; no outdoor amplified sound; outdoor fire pits/fireplaces prohibited; compliance with occupancy, parking, and health/solid waste standards.
• Enforcement and listings: License number must be displayed on all listings, ads, and contracts; marketplaces must remove noncompliant listings within 10 days or face fines up to $1,000 per offense; penalties up to $5,000 per day and permit revocation for violations.
• Timing: New operators must be licensed before listing. Existing operators must comply by 4/14/2025 (or by permit expiration/within seven years).

City of Carmel‑by‑the‑Sea

• Zoning and prohibition: STRs prohibited in R‑1 residential district.
• Commercial/R‑4 districts:
  • Legal Nonconforming: Permits issued prior to Ordinance 2019‑03 remain valid in perpetuity; transferable with the land; not relocatable.
  • Housing Incentive Permits: One STR allowed for each set of three new rental units created; one low‑income and one moderate‑income unit required; minimum 650‑sf size for two units; conditional use permit required; one off‑street parking per unit; STR may be at the same site or elsewhere in CC/SC/RC/R‑4.
• Advertising: Unpermitted transient rentals may not be advertised (CMC 17.28.040).
• Definitions and TOT: Transient rentals defined as stays under 30 consecutive days; TOT applies; Group R‑1 classification where more than one STR unit exists on a site.

Contacts and official resources Monterey County (unincorporated Carmel Valley)

• Housing and Community Development – Permit Center (STR information)
  • Website: www.countyofmonterey.gov/government/departments-a-h/housing-community-development/permit-center/short-term-rentals
  • Phone: General HCD number (county main line listed in county directory; confirm on the website for current STR hotline/contact)
• Treasurer‑Tax Collector (TOT)
  • Website: www.countyofmonterey.gov/government/departments-i-z/treasurer-tax-collector/transient-occupancy-tax
  • Phone: County TOT line (see website for current number)
• County Business Licensing
  • Website/contact: County business license portal and HCD Permit Center (links and phone numbers on the Monterey County pages above)

City of Carmel‑by‑the‑Sea

• Planning and Building Department (STRs, permits, zoning)
  • Website: ci.carmel.ca.us/post/transientshort-term-rental-information
  • Phone: (831) 620‑2010
• City Hall / Main Contact
  • Address: Monte Verde Street between Ocean and Seventh, Carmel‑by‑the‑Sea, CA 93921
  • Phone: (831) 620‑2000
  • Fax: (831) 620‑2004
  • Mailing Address: P.O. Box CC, Carmel‑by‑the‑Sea, CA 93921
• Municipal Code
  • Website: www.codepublishing.com/CA/CarmelbytheSea/
• GIS/Zoning Map
  • Website: planningsites.org/CarmelPlanning

Sources and links

• City of Carmel‑by‑the‑Sea – Short‑Term Rentals overview (residential prohibition): ci.carmel.ca.us/post/short-term-rentals
• City of Carmel‑by‑the‑Sea – Transient/Short‑Term Rental Information (definitions, zoning, permits, advertising): ci.carmel.ca.us/post/transientshort-term-rental-information
• County of Monterey – Housing & Community Development – Short‑Term Rentals (permit center): www.countyofmonterey.gov/government/departments-a-h/housing-community-development/permit-center/short-term-rentals
• County of Monterey – Transient Occupancy Tax (TOT) program: www.countyofmonterey.gov/government/departments-i-z/treasurer-tax-collector/transient-occupancy-tax
• County of Monterey – Municipal Code portal (for unincorporated STR ordinance details): www.codepublishing.com/CA/MontereyCounty/
• Carmel Realty Company – Vacation Rental Guidelines (market practice and weekly vs. monthly zones): www.carmelrealtycompany.com/vacation-rental-guidelines.htm
• Avalara MyLodgeTax – STRs banned/regulated in parts of Monterey County (2024 ordinance summary, license fee, caps, banned areas, marketplace rules, TOT note): www.avalara.com/mylodgetax/en/blog/2024/09/short-term-rentals-banned-in-some-areas-of-monterey-county-california.html

Key takeaways for investors

• Location is everything: Carmel‑by‑the‑Sea is extremely restrictive; most Carmel Valley parcels are subject to Monterey County’s 2024 ordinance—often prohibitive.
• Pre‑existing Carmel‑by‑the‑Sea STR permits (Legal Nonconforming) are valuable assets; they run with the land and transfer upon sale.
• New Housing Incentive Permits in Carmel‑by‑the‑Sea require substantial housing development and affordability covenants; they are rarely a quick‑flip opportunity.
• In unincorporated Carmel Valley, expect licensing costs (~$965), a business license, a 24/7 manager, neighbor outreach, strict quiet/fire rules, and TOT compliance without third‑party collection.
• Confirm HOA/CC&R restrictions early; they may impose longer minimums or owner‑occupancy requirements that override zoning.
• Factor compliance and enforcement risk into underwriting—Monterey County enforcement is active, with daily fines and permit revocation possible.