Apartments House Condo For Rent In San Mateo County . See floorplans, pictures, prices & info for available rental homes, condos, and townhomes in san mateo county, ca. Official san mateo county homes for rent. Sagewood Apartments Lubbock, TX from www.apartments.com As of april 2022, the average apartment rent in san mateo, ca is $2,359 for a studio, $2,919 for one bedroom, $4,147 for two bedrooms, and $4,612 for three bedrooms. 55 w 5th ave san mateo, ca 94402. See floorplans, pictures, prices & info for available rental homes, condos, and townhomes in san mateo county, ca.