Home 商业地产 4394 ALPINE ROAD, Portola Valley 94028; Lots for Sale; 2/5 in San Mateo County By siteeditor. Published on 3 3 月, 2014. 4394 ALPINE ROAD, Portola Valley 94028; Lots for Sale; 2/5 in San Mateo County 4394 ALPINE ROAD, Portola Valley 94028 Approx Lot: 49,658 Sqft Type: Single Family Residential Land Price: $2,495,000 Date : Feb’2014