Concrete companies in Denver: 299 locations, a listed pumping company in Thornton and the city's sidewalk license

This report is for Denver-area owners, builders and property managers hiring a concrete contractor or supplier, and for B2B sellers whose customers are concrete firms: fleet and telematics vendors, pump and parts suppliers, admixture distributors, insurers and staffing firms.

The market in Census data

Figures for the Denver-Aurora-Centennial, CO Metro Area (CBSA 19740), combining NAICS 238110 (Poured Concrete Foundation and Structure Contractors) and NAICS 327320 (Ready-Mix Concrete Manufacturing). Source: US Census Bureau, County Business Patterns 2023.

Ready-mix plants here are small, 12.4 employees on average, and 20 of the 38 have fewer than five.

The contractor row for 250 or more is the 261 total less the published classes. For both codes combined, the Census Bureau publishes 160 establishments with one to four employees, 36 with 10 to 19 and 39 with 20 to 49, and withholds the rest.

Where they are

Three county employee totals were published but flagged as high-noise (the confidentiality noise moved them by 5% or more), so we leave them out. County ready-mix rows with fewer than three plants aren't published, which is why the plant column adds to 36 of 38. Arapahoe's crews are the biggest, averaging 28.1 employees per location; Denver County's average 6.5. Douglas County has 10 ready-mix plants for 22 contractors, a sign of plants sited near new suburbs.

Each establishment here is a location with payroll, not a company; owner-operators without employees aren't counted.

Public companies in and around Denver

Concrete Pumping Holdings (Nasdaq: BBCP) is headquartered in Thornton, in Adams County. It isn't in the data file's list because its SEC industry code is special trade contractors (1700) rather than concrete work. Its 10-K for the year to 31 October 2025 reports:

Summit Materials, long headquartered in Denver, is no longer listed: Quikrete completed its acquisition on 10 February 2025. Martin Marietta named Colorado among its ten largest revenue states in 2025 and bought Albert Frei & Sons, a Colorado aggregates producer, in January 2024 to strengthen its Denver aggregates platform. Eagle Materials ran 4 ready-mix plants in northern Colorado at 31 March 2026 and supplies cement from its Laramie, Wyoming plant through a Denver terminal.

Denver's right-of-way licenses

Colorado has no state license for concrete contractors. Denver issues its own contractor licenses, doesn't accept other jurisdictions' licenses, and starts the process with a supervisor certificate. For concrete in the public right-of-way it issues:

Each needs a bond and insurance filed with the city. Suburbs such as Aurora, Lakewood and Thornton set their own rules, so check the city where the work is.

Worked example: does a boom pump pay for itself?

Illustrative example. Rates and times are invented to show the arithmetic.

A contractor is placing 120 cubic yards of foundation walls with a six-person crew costing $45 an hour each.

On labor alone, the pump costs $645 more. It pays when the time saved matters elsewhere: trucks waiting less (a plant may charge for standby), a second pour the same day, or access the chute can't reach. That trade-off is the market Brundage-Bone and the region's independent pumpers sell into.

Selling to Denver concrete firms

Adams County is the hub, with a third of all locations and the pumping company's head office. Plant-side sellers have 38 small plants, many in Douglas and Adams counties; contractor-side sellers should split the large crews of Arapahoe and Adams from the small firms in Denver County. For turning these counts into names, see how to build a prospect list. Bebop can find concrete firms that match a description and research each account.

Illustrative example. A telematics vendor for mixer and pump trucks (frontrangefleet.example) targets the 38 ready-mix locations and the metro's concrete pumping firms, about 60 companies after removing duplicates. At a 12% reply rate that's 7 conversations; two fleets of 30 trucks at $40 a truck a month is $28,800 a year.

Subject: Where your trucks wait

Hi [first name],

[Company] runs mixers out of [county], and on most fleets the expensive minutes are the ones spent waiting at the pour.

Our trackers time every stage of a load (batch, travel, wait, discharge, return) and flag the jobs where waiting eats the margin.

Want a 30-day trial on five trucks?

[Your name]

Local sources

Next step: for the builders and trades around these crews, read the report on construction companies in Denver.