About ConcreteCostCalc

Homeowners and small-project owners use this calculator before calling a contractor. It gives a realistic, location-aware starting number for common concrete jobs. Compare a contractor's quote against this range to check whether it fits your job size and metro area. This site does not replace a bid from a licensed contractor.

Every price on this site starts from public data. Labor wages come from the Bureau of Labor Statistics, priced for your metro area. Material prices come from the Census Bureau, adjusted forward with a Bureau of Labor Statistics price index. We then adjust and mix these numbers, so each result is our own estimate based on agency data.

The HUD USPS ZIP crosswalk converts your ZIP code into a metro area. See the methodology page for every source, its publication date, and the calculation behind each number, including the limitations we know about.

This calculator runs entirely from code. The same published formula produces every result, for every visitor. Every change goes through an automated test suite and a build check before it ships. A public set of test cases on the methodology page shows the exact numbers those checks confirm.

A scheduled job checks material pricing every month and records what changed. The numbers on this site update the next time we rebuild it with that data. The footer on every page names the data date behind that estimate.

Wage data updates once a year, when the Bureau of Labor Statistics publishes its annual survey. We download the new file and run an import script to load it. The ZIP code to metro area lookup updates the same way, whenever HUD releases its quarterly file.

Some model values come from our own calibration or judgment instead of a government dataset. We review those once a year, alongside the new wage data. The parameter levels table marks each one and shows the date it was last set.

Corrections follow the same process as every other update: code change, tests, then a new build. See Report an error below for how to flag a number that looks wrong. We publish every page under the ConcreteCostCalc name, without an individual author or a claimed credential.

An estimate is a starting number. A quote is a binding price from a contractor who has seen your site. This site's estimates combine public wage and material data, our own calibration, and a labeled assumption wherever no public data exists. They do not account for site access, soil conditions, permits, or other local factors a contractor prices into a real quote.

The dollar range on every result reflects real contractor prices varying for the same job in the same place. A single point price would hide that natural spread.

ConcreteCostCalc does not accept payment from contractors for placement or ranking. No contractor pays to appear on this site, and no contractor pays for a better price estimate. This site may show advertising through Google AdSense, and the privacy page explains how that advertising works. Advertising revenue does not change any number this calculator produces.

Nothing on this site is sponsored content, and no advertiser reviews or approves a number before it publishes.