How Much Does a Concrete Slab Cost in Georgia?

Published cost guides put a plain concrete slab at about $4 to $8 per square foot nationally in 2026. Around Atlanta, cost guides list reinforced slabs 4 to 6 inches thick at about $7 to $12 per square foot.

At the Atlanta numbers, a 20 by 20 garage slab runs about $3,800 to $6,600. A 30 by 40 shop or pole barn slab runs about $11,500 to $19,700. These are market numbers from published guides, not our price list.

Pro One Concrete pours concrete slabs for homes, garages, shops and barns around Villa Rica and west metro Atlanta. We look at the job and put the quote in writing.

What Does Each Kind of Slab Cost in Georgia?

These ranges come from national and Georgia cost guides. The year beside each source shows how fresh the number is.

The guides we found publish numbers for Atlanta and Marietta, not for towns like Villa Rica or Carrollton. Those metro figures are the closest published yardstick for a west Georgia slab.

The national and Atlanta numbers measure different slabs. The national guide prices a basic slab and counts steel as an extra. The Atlanta and Marietta figures assume a reinforced slab 4 to 6 inches thick. At the national rate, a 30 by 40 slab comes to $4,800 to $9,600 before extras.

How Much Does Thickness Add to the Price?

Thickness sets how much concrete the job takes, and concrete is sold by the cubic yard. One yard covers about 81 square feet at 4 inches thick. A national guide lists averages near $5 per square foot at 4 inches and $6 at 6 inches. An 8 inch slab averages about $8 per square foot.

An Atlanta cost guide from 2025 prices ready-mix at $135 to $162 per yard, depending on strength. It lists delivery at $120 to $270 per truck load, apart from the concrete. Orders under 10 yards count as short loads, and short loads cost more.

Take a 30 by 40 slab. At 4 inches thick it takes about 15 cubic yards of concrete. At 6 inches it takes about 22. Those 7 extra yards add roughly $1,000 to $1,200 at Atlanta prices, before labor.

Which thickness a slab needs depends on what it carries. The Atlanta guide puts garage and foundation slabs at the thicker end of the 4 to 6 inch range. Heavy vehicles call for a thicker slab too.

What Else Moves the Price of a Slab?

Size and thickness set the base cost. These items move it up or down from there.

• Grading. Sloped or wet ground has to be graded before the pour. A 2026 Atlanta cost estimator adds $1 to $2 per square foot on a moderate slope. A steep one adds $2 to $5. Sampled federal soil survey data puts over half of Douglasville and Marietta on slopes of 10 percent or more.
• Base and dirt work. Cost guides call for a level bed of crushed rock or gravel under a slab. Hauling dirt or rock to or from the site raises the price, per the Atlanta guide. Trees or big rocks in the way add cost too.
• Mesh or rebar. The national guide lists wire mesh at about $0.35 per square foot. Steel rebar runs $2 to $3 per square foot.
• Thicker edges for a building. Some slabs need reinforced, thicker edges to carry more weight, like the walls of a building. The national guide adds $1 to $2 per square foot for them.
• Vapor barrier. A vapor barrier under a slab helps keep ground moisture out. The national guide prices it near $0.50 per square foot.
• Access. Long drives and hard sites to reach raise the price, per the Atlanta guide. So does pumping the concrete or moving it by wheelbarrow when the truck cannot reach.
• Tear-out. Removing an old slab is an extra line. The Atlanta guide puts demolition at $1.20 to $2.00 per square foot.

Does a House Slab Cost More Than a Garage or Barn Slab?

Per square foot, the published numbers say yes. The 2026 Atlanta cost estimator lists home foundation slabs at $10 to $18 per square foot. Its garage floors run $7 to $12. A house slab often adds thicker edges and a vapor barrier.

Some homes skip the slab and sit on a crawl space. A crawl space home can stand on footings and block foundation walls instead. That is a different job with its own price. Our post on block foundation costs in Georgia has those numbers.

Which Slabs Need a Permit in Georgia, and Who Do You Ask?

Georgia sets building codes statewide, but each city or county writes its own permit rules. The Georgia Department of Community Affairs put the 2024 residential code, with Georgia amendments, into effect on January 1, 2026. Those amendments drop the model code’s chapter on administration, which holds its permit rules.

A house slab falls under the building permit for the new home or addition. Villa Rica’s inspection list for a new house includes footing and slab inspections before framing. The city also requires permits for detached accessory structures, such as a garage or shop. Its accessory structure packet asks for footing and slab details, down to the reinforcement.

Outside Villa Rica’s limits, Carroll County or Douglas County handles the permit. Unincorporated Carroll County has an accessory building permit for a pole barn or a garage. Douglasville’s monthly permit reports include an accessory slab permit.

Fees vary by town too. Marietta bills residential permits at a $50 base fee plus $5 per $1,000 of construction cost. The City of Atlanta also has a stormwater rule. Adding over 500 square feet of hard surface to a house lot means handling the runoff on site.

The state codes apply even where a town does not inspect. Ask the building department where the property sits before work starts. Georgia law also requires a locate request through Georgia 811 before machine digging. Georgia 811 asks for that ticket at least 3 business days ahead.

How Do You Get a Real Number for Your Slab?

A cost guide gives a range, and the site decides where your job lands. Ask any contractor for a written quote that lists the size, thickness, base and steel. Quotes written that way are easy to compare.

Pro One pours house, garage, shop and barn slabs, plus commercial concrete pads for businesses. Call or text (770) 880-4224, or read more about our concrete slab services. We look at the job and put the quote in writing.