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California
Mill Valley

Mill Valley, California Airbnb Rules & Investment Guide (2026)

Research Mill Valley short-term-rental registration, zoning, safety, lodging taxes, enforcement, contacts, and property-level underwriting.

Mill Valley short-term-rental rules and property review

Mill Valley Rental Review

Address firstConfirm Town jurisdiction
ZoningGet a written use answer
10%City occupancy tax
MonthlyCity tax filing
Decision point

Mill Valley STR Investment Decision

Begin with the exact parcel, City jurisdiction, short-term rental registration, business licensing, lawful dwelling status, and tax accounts before modeling a Mill Valley rental.

  • Confirm the address is inside Mill Valley city limits.
  • Verify the dwelling and sleeping areas are lawful.
  • Apply for City STR registration before operating.
  • Obtain the residential business license and TOT account.
  • Review deed, HOA, lease, lender, and insurance restrictions separately.
  • Model property-specific costs instead of market-wide projections.

A Mill Valley mailing address can fall outside City jurisdiction, so boundary confirmation comes first.

Property eligibility

Mill Valley STR Property Eligibility

City code defines a short-term rental as a dwelling unit or rooms rented for overnight lodging for fewer than 30 consecutive days, subject to registration and business-license requirements.

  • Confirm the parcel is within City limits.
  • Identify the current zoning district and lawful residential use.
  • Deed-restricted ADUs and JADUs cannot be used as short-term rentals.
  • A lease prohibition also bars the use.
  • Commercial-district tables list STRs as permitted in C-D, C-N, C-G, and C-L.
  • Request written Planning confirmation when zoning or dwelling status is unclear.

Do not rely on a platform listing, mailing address, or prior guest history as proof of eligibility.

Local approvals

Mill Valley STR Registration and License

The City requires a Residential Short-Term Rental Permit, a Residential Business License, and applicable transient occupancy tax registration before operation.

  • Submit the current City STR registration packet.
  • Identify the owner, rental address, occupancy, parking, and emergency contact.
  • Pay the current registration and business-license fees.
  • Complete annual renewal before expiration.
  • Keep the permit, license, and tax account records together.
  • Recheck requirements after ownership, dwelling, or use changes.

The City STR page currently lists a $181 initial registration fee and a $90 renewal fee; verify current charges before filing.

Guest disclosures

Mill Valley Guest Conditions

Registration materials require written guest conditions covering occupancy, parking, emergency contacts, trash, noise rules, and good-neighbor conduct.

  • State the maximum number of occupants, including children.
  • Describe parking available for guest use.
  • Provide a reachable emergency contact.
  • Explain trash handling and collection expectations.
  • Provide Mill Valley noise-ordinance information.
  • Require considerate noise and parking behavior.

Retain the issued registration and the guest-condition document used for each rental.

Property operations

Mill Valley Safety and Guest Operations

Set operating limits from lawful occupancy, building and fire safety, site capacity, registration representations, parking, waste service, and neighborhood protections.

  • Use only lawful sleeping rooms and exits.
  • Maintain alarms, address visibility, and required safety equipment.
  • Verify permits for conversions, decks, pools, electrical work, and additions.
  • Give guests accurate parking, trash, and quiet-hour instructions.
  • Keep the emergency contact available during stays.
  • Document complaints, responses, repairs, and agency correspondence.

City registration does not replace building, fire, nuisance, or private-contract obligations.

Taxes and filings

Mill Valley Transient Occupancy Tax

Mill Valley imposes a 10% transient occupancy tax on rent charged for qualifying occupancy, and operators must collect, separately state, report, and remit the tax.

  • Register for a City TOT account after securing the STR permit and business license.
  • Collect TOT when rent is collected.
  • File and pay through the current City tax portal.
  • Confirm filing deadlines directly because the City page contains differing monthly deadline language.
  • Verify what a booking platform collects and what the operator must still report.
  • Keep supporting tax and rental records for at least three years.

City code and Finance guidance control taxable rent, exemptions, penalties, interest, records, and filing procedure.

Enforcement and review

Mill Valley STR Enforcement

Violations of STR registration terms, business-license rules, tax duties, noise standards, building requirements, or private restrictions can create separate enforcement exposure.

  • Operate within the registered occupancy and property details.
  • Respond to City notices by the stated deadline.
  • Correct noise, parking, waste, or safety issues promptly.
  • Preserve proof of tax filings and payments.
  • Registration materials warn that violations can affect license reissuance.
  • Obtain written closure after correcting a cited issue.

Platform availability does not prevent City, tax, building, fire, or private enforcement.

Property analysis

Mill Valley Property Underwriting

Use verified parcel and property inputs rather than unsupported market-wide revenue, occupancy, nightly-rate, appreciation, or return projections.

  • Confirm lawful STR use before assigning rental income.
  • Price registration, licensing, taxes, inspections, repairs, furnishing, utilities, and management.
  • Obtain insurance that expressly covers the intended use.
  • Stress-test vacancy, repairs, complaints, wildfire, utility interruption, and enforcement downtime.
  • Review access, slope, drainage, vegetation, parking, and emergency response.
  • Model a lawful fallback use if STR operation ends.

Qualified legal, tax, insurance, building, and planning advisers should resolve open property questions.

Contacts and support

Mill Valley STR Contacts

Use the City office responsible for each decision and retain written answers.

  • STR and Finance questions: tot@cityofmillvalley.gov or 415-384-4802.
  • Use the City Planning Department for zoning and lawful-use questions.
  • Use the Building Department and Fire Department for construction and life-safety questions.
  • Use City tax staff for TOT registration, returns, and account questions.
  • Call 911 for emergencies and use the appropriate non-emergency channel otherwise.
  • Consult qualified local advisers for title, lease, HOA, insurance, and tax issues.

Property selection and setup support: Plan a Mill Valley Property Strategy Call. The City remains the authority for eligibility and approvals.

Mill Valley investment questions

Mill Valley Airbnb Investment FAQs

How do I start an Airbnb in Mill Valley?

Confirm City jurisdiction and lawful dwelling status, then obtain STR registration, a residential business license, and a TOT account before operating.

  • Start with the exact address.
  • Use current City forms and fees.
  • Keep approvals and tax records together.
How do I identify suitable STR properties in Mill Valley?

Screen exact parcels for City limits, lawful residential use, zoning, ADU restrictions, access, parking, safety, private restrictions, and insurability.

  • Do not rely on mailing labels.
  • Compare records with actual conditions.
  • Reject a property when a critical approval cannot be documented.
What local approvals does a Mill Valley STR need?

The City requires Residential Short-Term Rental registration and a Residential Business License, followed by the applicable TOT account and filings.

  • Apply before operating.
  • Confirm current fees and renewal dates.
  • Retain issued records.
Can a Mill Valley ADU be used as a short-term rental?

A deed-restricted ADU or JADU cannot be used as a short-term rental under the City code definition. Confirm the restriction and lawful status for the exact unit.

  • Review the deed restriction.
  • Check City property records.
  • Get written guidance when status is unclear.
What must Mill Valley STR guests receive?

City registration materials require guest conditions addressing occupancy, parking, emergency contact information, trash, noise rules, and good-neighbor conduct.

  • Use the registered occupancy limit.
  • Describe actual parking.
  • Keep the emergency contact reachable.
What lodging tax applies in Mill Valley?

Mill Valley imposes a 10% transient occupancy tax on qualifying rent, with operator collection, reporting, and remittance duties.

  • Register the tax account.
  • Confirm platform collection separately.
  • Keep records for at least three years.
What costs should a Mill Valley STR budget include?

Use property-specific purchase, closing, registration, licensing, renovation, furnishing, safety, utility, insurance, tax, management, and maintenance inputs.

  • Obtain written bids.
  • Include compliance contingencies.
  • Do not substitute market-wide estimates.
How should Mill Valley STR profitability be evaluated?

Use a property-specific operating model only after lawful use is documented. Model supported rent assumptions, vacancy, taxes, expenses, repairs, management, financing, and compliance downtime.

  • Use conservative scenarios.
  • Separate operating performance from appreciation.
  • Update the model when facts change.
How should ROI be calculated for a Mill Valley STR?

Divide a clearly defined annual return by total cash invested, using verified property inputs and consistent treatment of financing, taxes, capital work, reserves, and owner labor.

  • State the return definition.
  • Include all invested cash.
  • Stress-test loss of STR eligibility.
Who can help with a Mill Valley STR decision?

Mill Valley controls registration, licensing, zoning, building, safety, and City tax questions. Qualified local advisers can address legal, insurance, title, and tax issues. STR Search can assist with property selection and setup planning.

  • Contact City Finance at 415-384-4802.
  • Bring the exact address and intended use.
  • Retain written answers from each adviser.
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