A Plus Builders
Construction company in Portola Valley, CA 94028
About this company
A Plus Builders is listed as a construction company at 3130 Alpine Rd in Portola Valley, California, in San Mateo County. It is one of 3 general contractors in ZIP 94028.
Other construction companies nearby
California Pavers Co.325 Sharon Park Dr, Menlo Park
1.5 mi(650) 212-7190
Supple Homes, Inc2087 Avy Ave, Menlo Park
2.1 mi(650) 587-3911
Enzo Total Construction650 El Camino Real, Palo Alto
3.1 mi(650) 669-5784
Geoff Okarma Construction5020 Alpine Rd, Portola Valley
3.1 mi(650) 529-9967
Dostart Development Company145 Addison Ave, Palo Alto
3.3 mi(650) 322-0777
Housing market around ZIP 94028
Figures describe the local area, not this company.
Typical home value$4,331,000+12.0% past year · +53% in 10 years
12-month value outlook+2.4%
Days to sale agreement16San Francisco metro · 22 a year ago
New homes permitted, 20252,216San Mateo County
Listings with a price cut21.2%San Francisco metro
Sale price vs list106.1%San Francisco metro
New construction sales91San Francisco metro, Aug · −32% from last year
Source: Zillow (home values, rent, outlook and metro sales), data through Sep 2026. Permits: U.S. Census Bureau.
Typical home value, last 10 years
Source: Zillow Home Value Index, Sep 2026.
Local building angle: San Mateo County permitted 2,216 new homes in 2025, including 1,708 apartment units. 7% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.