Trainor Builders
Construction company in St Helena, CA 94574
About this company
Trainor Builders is listed as a construction company at 1229 Adams St in St Helena, California, in Napa County. It is one of 10 general contractors in ZIP 94574.
Other construction companies nearby
Centric General Contractors1230 Spring St, St Helena
0.1 mi(707) 968-2900
David McClelland Builders1810 Main St, St Helena
0.5 mi(916) 790-7535
Harold Smith & Son1505 Charter Oak Ave, St Helena
0.6 mi(707) 963-7977
Montelli Construction436 Saint Helena Hwy S, Saint Helena
1.5 mi(707) 963-4800
Zimmerly Construction Inc.584 Liparita Ave, Angwin
4.8 mi(707) 965-2243
Housing market around ZIP 94574
Figures describe the local area, not this company.
Typical home value$1,633,000−0.6% past year · +24% in 10 years
Typical rent$3,225
12-month value outlook−0.3%Roughly flat
New homes permitted, 2025364Napa County
Days to sale agreement40Napa metro · 47 a year ago
Listings with a price cut21.9%Napa metro
Sale price vs list97.8%Napa metro
New construction sales7Napa metro, Aug
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: Napa County permitted 364 new homes in 2025, including 92 apartment units. 11% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.