San Mateo County · checked 2026-09-13
Can you BnB it in Millbrae?
RestrictedMillbrae requires a short term residential rental permit and only issues one for the applicant's primary residence, which they must occupy at least 265 nights a year. The permit is personal and nontransferrable, hosted stays are unlimited, and unhosted stays are capped at 100 nights.
The rules, with their sources
Permit or licenseA permit or license is required before operating.L17.30.030 · code text · checked 2026-09-13
Hosted onlyThe code does not limit rentals to hosted stays.L1Title 7 Chapter 7.30 Short-Term Residential Rental Permits, sections 7.30.010 through 7.30.110 (Ord. 771 section 3(A)) · code text · checked 2026-09-13
Primary residenceThe rental must be the operator's primary residence.L17.30.020 · code text · checked 2026-09-13
Night capUnhosted rentals are capped at 100 nights per year.L1Title 7 Chapter 7.30 Short-Term Residential Rental Permits, sections 7.30.010 through 7.30.110 (Ord. 771 section 3(A)) · code text · checked 2026-09-13
Caps and limitsNonhosted use is capped at 100 nights during the duration of the permit and requires director approval, section 7.30.070A. Hosted use has no night cap but no more than two bedrooms may be rented at once. No citywide numeric cap on the number of permits appears in the chapter.L17.30.070A · code text · checked 2026-09-13
Transfer when the home sellsSection 7.30.070J states that each permit is personal to the permittee to whom it is issued and that permits are nontransferrable. The chapter lists no exception for family, heirs, spouses, trusts, entity or LLC membership changes, and no transfer application window or grace period. A buyer must apply in their own name and must satisfy the primary residence test in section 7.30.020, which requires residing in the unit at least 265 nights per year.L17.30.070J · code text · checked 2026-09-13
Read the code text →
In the city's own words
7.30.030“Operating a short-term residential rental unit without a short-term residential rental permit, including, without limitation, advertising, booking guests, and accepting monetary compensation for lodging, is prohibited.” source
7.30.070J“Each short-term residential rental permit is personal to the permittee to whom it is issued. Short-term residential rental permits are nontransferrable.” source
7.30.070A“A short-term residential rental permit allows the permittee to rent the short-term residential rental unit for an unlimited number of nights as a hosted unit, and if approved by the director, up to one hundred nights as a nonhosted unit during the duration of the permit.” source
7.30.020“"Primary residence" means a dwelling unit where a person is domiciled, and resides for at least two hundred sixty-five nights per year. A person may only have one primary residence at any given time.” source
Citation: Title 7 Chapter 7.30 Short-Term Residential Rental Permits, sections 7.30.010 through 7.30.110 (Ord. 771 section 3(A))
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How this page was verified
Verified from the municipal code (level 1), checked on 2026-09-13 by the CanIBnB research desk. Research is AI assisted and human reviewed; the method, the level system, and the re-check schedule are on the How we verify page. If anything here is wrong, report it and it goes in the public corrections log.