Donkey Concrete Mix Inc

Concrete and masonry contractor in Antioch, CA 94509

About this company

Donkey Concrete Mix Inc is listed as a concrete and masonry contractor based in Antioch, California, in Contra Costa County. Federal motor carrier records list 7 drivers and 7 trucks for the company. It is one of 7 concrete and masonry companies in ZIP 94509.

Other concrete and masonry companies nearby

Paradigm Concrete & Construction Inc3410 E 18th St, Antioch

(925) 232-8411

Fleet size

Drivers7

Trucks7

Last federal filing: Apr 2025. Source: FMCSA.

Moderate market, balanced fieldArea profitability for concrete and masonry in ZIP 94509

Housing demand43

Sales pace, new listings and new construction. Source: Zillow

Customer spending power79

Household income and home values

Room for another company34

More crowded than 66% of US ZIPs

Scored against every US ZIP. An index of local conditions, not this company's results.

County context

One of 92 concrete and masonry companies in Contra Costa County, CA.

846 general contractors in Contra Costa County, CA.

All 1,622 construction companies in Contra Costa County, CA.

ZIP 94509 at a glance

Population: 70,090 (1,551 per sq mi)
Median age: 38
Households: Median income $86,196 · 42% earn six figures
Housing: 58% owner-occupied
Workforce: 64% labor-force participation · 7.6% unemployment

ZIP figures are US Census estimates for the ZIP area, not the company.

Housing market around ZIP 94509

Figures describe the local area, not this company.

Typical home value$536,000−1.0% past year · +61% in 10 years

Typical rent$2,348+0.8% past year

12-month value outlook+1.2%

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. 9% of the homes in this ZIP were built since 2000.

Local figures are estimates from public records and Zillow housing data, updated regularly.