Tenant / Landlord Information & Referral Service is provided by Project Sentinel for tenants and landlords throughout San Mateo County. The helpline provides information on all types of tenant-landlord issues and offers dispute resolution options. Call 650-399-2149 or email Project Sentinel at info@housing.org.
Ordinance Alert: the City Council adopted an ordinance on December 1, 2025 entitled, "Residential Tenant Protection Program," which adds Chapter 10.100 to the San Mateo Municipal Code. Chapter 10.100 requires landlords to provide written notice to tenants by February 1, 2026 and to include language in leases or rental agreements. Please see this technical assistance document for more information.