How Much Does a 20x40 Concrete Driveway Cost in Tennessee?
A 20x40 driveway — 800 square feet — is one of the most practical sizes for Tennessee homeowners who need two-car width with enough depth to park vehicles in tandem. It's also the right size for an RV pad or a wide approach to a detached garage. If you're comparing quotes on a pad this size in Lawrence or Giles County, here's what the number should be and why.
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An 800 sq ft concrete driveway — properly formed with broom finish and control joints for longevity.
Quick answer: 20x40 concrete driveway cost in Middle Tennessee
A 20x40 concrete driveway (800 sq ft) runs $6,400 to $11,500 installed in Lawrence and Giles County. Base scope includes excavation, compacted gravel base, wire mesh, 3,500 PSI concrete, broom finish, and joint cutting. Demo of existing surface, thickness upgrade, and site access determine where on that range you land.
What makes a 20x40 pad different from a smaller pour
At 800 square feet, a 20x40 pad is a straightforward project for an experienced crew — one truck load of concrete (10–14 yards), one prep day, and a half-day pour. The forming is simple because the dimensions are rectangular. The main cost variables are the same as any driveway: base depth required by the soil, whether there's an existing surface to demo, and what you're parking on it.
Common uses for a 20x40 driveway in Tennessee
The most common requests we see for this size in Lawrence and Giles County: a two-car-wide approach pad for a two-bay garage, an RV or camper parking pad beside an existing driveway, a wide equipment pad for a small farm, and a full replacement of a deteriorated double-car asphalt drive. Each use case might slightly change the thickness spec — an RV pad needs 5 inches while a standard car pad is fine at 4.
| Scenario | Lawrence / Giles County estimate |
|---|---|
| 20x40 (800 sq ft), 4 in, wire mesh, clean site | $6,400 – $8,800 |
| 20x40, 4 in, demo existing asphalt first | $7,800 – $10,500 |
| 20x40, 5 in, rebar, heavy vehicle / RV use | $8,500 – $12,000 |
| 20x40, 4 in, stamped finish | $11,000 – $17,000 |
What's included in a proper 20x40 driveway quote
Every quote we give for a driveway this size includes: excavation to stable subgrade, compacted crushed stone base to the depth required by site conditions, wire mesh reinforcement, 3,500 PSI concrete placement and broom finishing, control joint cutting, and cleanup. What isn't included unless specified: demo of an existing surface, colored or stamped finish, or significant site grading beyond establishing drainage slope.
One thing that should always be in a quote but sometimes isn't: control joint cutting. On 800 square feet, skipping or mis-spacing control joints is the most common cause of random cracking that happens in the first 1–2 years. We cut joints based on the slab dimensions and thickness — not a guessed spacing — to give the concrete a designated place to crack if it moves.
Frequently asked questions
How much does a 20x40 concrete driveway cost in Tennessee?
In Lawrence and Giles County, a 20x40 driveway (800 sq ft) runs $6,400–$11,500 installed. Base scope is excavation, gravel base, wire mesh, 3,500 PSI concrete, broom finish, and joint cutting. Site conditions, demo, and thickness move the number.
What is a 20x40 driveway typically used for?
Two-car-width approaches, RV/camper pads, wide equipment pads, and double-bay garage approaches. The 20-foot width fits two standard vehicles side by side; the 40-foot depth parks two in tandem. For RVs and heavy vehicles, a 5-inch spec is worth the modest upcharge.
How many yards of concrete does a 20x40 driveway take?
At 4 inches thick: approximately 11 yards ordered (with waste factor). At 5 inches: approximately 14 yards. A single ready-mix truck typically delivers 8–10 yards, so this is usually a two-truck load pour.
Does a 20x40 concrete driveway need rebar?
Wire mesh is sufficient for standard passenger vehicles. For RVs, trucks over 6,000 lbs, or trailers, a rebar grid is worth the $400–$800 upgrade on 800 sq ft. We spec reinforcement based on what you're actually parking on it.
How long does a 20x40 concrete driveway take to pour?
One day for site prep, one day for the pour. Walk on it at 24–48 hours, passenger vehicles at 7 days, heavy trucks and trailers at 28 days. We provide written cure instructions after every pour.
Get a free estimate on your 20x40 driveway in Lawrenceburg, Pulaski, or Middle Tennessee. Call (931) 369-2134 or request a quote online. Also see our 20x20 driveway cost guide and our concrete driveway service page.