Concrete slab cost in Iowa

Iowa versus the states around it

Iowa ranks 33 of 51 (the 50 states plus DC) for concrete slab, where 1 is the most expensive. The costliest is Hawaii at $5,150 and the cheapest Arkansas at $3,350, both for 400 sq ft at the midpoint. Iowa sits at $3,700. The five states closest by workforce center are listed below.

When Iowa weather lets you pour

Weather decides when pouring concrete can happen, and Iowa is not uniform. The table uses NOAA's 1991-2020 climate normals from the weather station nearest each metro we cover, and counts the months that are neither cold nor hot enough to complicate the job.

Des Moines has the longest comfortable season of the metros we cover in Iowa at 7 months (April through October); Dubuque has the shortest at 5 (May through September). Rainfall runs from 29 inches a year in Sioux City to 38 inches in Dubuque.

We do not adjust prices by month, because we have no reliable published data on seasonal pricing. Timing is still worth raising when you collect bids.

Extras that change the Iowa total

Add-ons start from national price ranges and are scaled by 0.98 for Iowa, which is the average of the area's wage index (1.02) and goods price index (0.94). The estimator above can add them to your total.

If you are planning more than one job in Iowa

Each project weights the trades differently, so Iowa's wage level does not push every price by the same amount. Compared with the US midpoint, asphalt driveway is −1% and detached garage −5%.

Iowa labor market for concrete slab

Iowa's labor line is priced from 4 trades, each compared with its US median wage. After weighting by each trade's share of the work, the state comes out at 1.02 times the national level.

Cement masons and concrete finishers (47-2051), 50% of the weighting: a median of $27.99 an hour, in line with the US median of $27.41. The middle half of them earn between $22.74 and $31.25 an hour. About 2,110 work in the state. That is 13.5 per 10,000 jobs, compared with 13.3 nationally, so the supply of crews looks typical.

For construction laborers (47-2061, weighted 30%) the local median is $23.31 an hour, which is in line with the national $22.66. The middle half of them earn between $21.90 and $28.11 an hour. BLS counts 13,780 of them working in the state, 88.4 for every 10,000 jobs (US: 70.5), so the local bench is deeper than average.

Operating engineers and other construction equipment operators (47-2073), 10% of the weighting: a median of $29.01 an hour, in line with the US median of $28.78. The middle half of them earn between $25.77 and $34.93 an hour. About 5,530 work in the state. That is 35.5 per 10,000 jobs, compared with 30.7 nationally, which suggests plenty of local crews to bid.

Carpenters (47-2031), 10% of the weighting: a median of $27.75 an hour, 5% below the US median of $29.12. The middle half of them earn between $22.91 and $31.69 an hour. About 5,770 work in the state. That is 37.0 per 10,000 jobs, compared with 43.1 nationally, so the supply of crews looks typical.

A crew paid at the 75th percentile for cement masons and concrete finishers ($31.25 an hour) would add about $95 to the statewide midpoint; one at the 25th percentile ($22.74) would take off about $150. Use that as a rough guide to how far a bid can sit from our midpoint on wages alone.

BLS counts 1,559,240 jobs across Iowa (May 2025), which is 1.0% of US employment.

Concrete slab cost by metro in Iowa

3 of the 7 metros sit above the statewide midpoint of $3,700, and the top-to-bottom gap is 4%. Each row prices the default size with that metro's own BLS wages and BEA price levels, so the gap between rows is real local variation rather than a flat markup.

Why two Iowa quotes can differ

• Thickness and mix

  A 4-inch slab uses about 1.23 cubic yards of concrete per 100 sq ft; a 6-inch slab uses about 1.85. Stepping up from a 3,000 PSI to a 4,000-4,500 PSI mix adds $10-$40 per cubic yard (Estimators.us).

• Base and reinforcement

  A compacted gravel base, vapor barrier, and wire mesh or rebar are priced separately by some contractors and bundled by others. Ask which one your quote does.

• Truck and pump access

  If the mixer truck can't back up to the forms, someone has to wheelbarrow it in or hire a pump. Pump or line-pump hire is typically billed per day.

• Small-job minimums

  Many crews have a minimum charge, so a 10x10 pad can cost more per square foot than a 20x20 slab.

• Finish

  A broom finish is the baseline. Stamped, stained, or exposed-aggregate finishes are priced as add-ons on top of the slab.

Basic, standard or premium: Iowa prices

Bands overlap on purpose, since a good standard job can cost as much as a light premium one. Below are the three bands for the default size, then a grid from 10x10 pad (100 sq ft) to 30x40 foundation (1,200 sq ft).