Sean Alexander Marine Services
General contractor in Discovery Bay, CA 94505
About this company
Sean Alexander Marine Services is listed as a general contractor at 4480 Discovery Pt in Discovery Bay, California, in Contra Costa County. It is one of 5 general contractors in ZIP 94505.
Other construction companies nearby
Delta Seaweed Removal1435 Marlin Pl, Discovery Bay
0.9 mi(925) 516-2520
Badal's Construction Company1038 Petite Sirah Ln, Brentwood
3.4 mi(352) 386-6700
Carrillo's Concrete1720 Green Acres Ln, Brentwood
4.2 mi(925) 595-4902
EGL Electric361 Madison Ct, Brentwood
4.6 mi(925) 200-6550
Pickell Roofing11 Cunha Rd, Brentwood
4.6 mi(925) 634-2276
Housing market around ZIP 94505
Figures describe the local area, not this company.
Typical home value$774,000−0.9% past year · +46% in 10 years
Typical rent$3,570−2.2% past year
12-month value outlook+1.0%
New homes permitted, 20251,163Contra Costa County
Days to sale agreement16San Francisco metro · 22 a year ago
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: Contra Costa County permitted 1,163 new homes in 2025, including 178 apartment units. 39% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.