Home Uncategorized Active Lots & Lands – Portola Valley – 94028 – San Mateo County – CA – 1/3 By siteeditor. Published on 29 1 月, 2014. Active Lots & Lands – Portola Valley – 94028 – San Mateo County – CA – 1/3 0 VISTA VERDE WAY, Portola Valley 94028 Approx Lot: 135,733 Sqft Type: Single Family Residential Land Orig. Price: $1,595,000