Specification Aggregate
Construction company in Golden, CO 80401
About this company
Specification Aggregate is listed as a construction company at 19301 W Colfax Ave in Golden, Colorado, in Jefferson County. It is one of 52 general contractors in ZIP 80401.
Other construction companies nearby
Martin Marietta Aggregates18401 W Colfax Ave, Golden
0.6 mi(720) 354-3950
Dream Jeanie304 Defrance Dr, Golden
1.6 mi(720) 232-6134
Gaston Renovation LLC18200 W 3rd Ave, Golden
1.7 mi(303) 994-0255
Intermountain Boilerworx, Inc.17981 W Colfax Ave, Golden
1.7 mi(303) 845-0432
W. Holmes Asphalt and Seal CoatingWest Colfax Avenue, Golden
1.8 mi(720) 288-1831
Housing market around ZIP 80401
Figures describe the local area, not this company.
Typical home value$817,000−0.1% past year · +79% in 10 years
Typical rent$2,104−0.7% past year
12-month value outlook−0.1%Roughly flat
New homes permitted, 20251,118Jefferson County
Days to sale agreement30Denver metro · 33 a year ago
Listings with a price cut36.7%Denver metro
Sale price vs list98.9%Denver metro
New construction sales329Denver metro, Aug · −31% 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: Jefferson County permitted 1,118 new homes in 2025, including 278 apartment units. 18% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.