Keller Williams Peninsula Estate Share: Real Estate - Residential and CommercialReal Estate-Residential 16 E 3rd Ave San Mateo, CA 94401 (650) 678-3358 Facebook Hours: Always available. About Map About Top Real Estate Brokerage in the Bay Area based in San Mateo County. Representing buyers, sellers, and renters. We help people find their new homes. What's Nearby? Distance: 5 10 15 20 25 50 mi.