How Much Does a 20x20 Concrete Patio Cost in Tennessee?
A 20x20 concrete patio — 400 square feet — is the most popular size we install for residential outdoor spaces in Lawrence and Giles County. It's practical for most household uses, it fits most backyard footprints, and it's sized so the cost is achievable for most budgets. Here's what it actually costs in our local 2025 market across three different finish options.
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A finished concrete patio in Middle Tennessee — properly formed, control joints placed, and broom finished for texture and longevity.
Quick answer: 20x20 patio cost in Middle Tennessee
A 20x20 concrete patio (400 sq ft) runs $3,200–$6,000 installed for plain broom-finished concrete in Lawrence and Giles County. Stamped concrete on the same footprint runs $6,000–$10,000 depending on pattern and color. Pavers run $7,000–$12,000. Site conditions and base depth required are the main cost variables beyond finish type.
Plain concrete vs stamped vs pavers: which is right for a 20x20 patio
Plain broom-finished concrete ($3,200–$6,000)
This is the most cost-effective option and the most durable long-term for a patio that will see regular use. Broom finishing adds texture that makes the surface slip-resistant when wet — important for any patio near a door or at grade. With proper control joints placed to follow the patio's dimensions, a plain concrete patio in Lawrenceburg or Pulaski will perform for 30+ years without requiring any maintenance beyond an occasional clean. It's not glamorous, but it's the baseline that everything else competes against.
Stamped concrete ($6,000–$10,000)
Stamped concrete on a 20x20 patio is where the appearance payoff is most noticeable. Patterns like ashlar slate or flagstone on a 400 sq ft patio immediately elevate the look of an outdoor space, mimicking the appearance of natural stone at a fraction of the material cost. The trade-off is maintenance: stamped concrete should be sealed every 2–3 years to preserve the color, particularly in Tennessee's heavy pollen season. We always apply an initial sealer after the 28-day cure period on every stamped pour.
Pavers ($7,000–$12,000)
Concrete pavers on a 20x20 patio compete in price with stamped concrete and offer the advantage of individual unit repairability — a cracked or stained paver can be replaced without affecting the surrounding surface. The trade-off is that paver joints can become uneven over time if the base settles, and polymeric sand joints need to be refreshed every few years. In Tennessee's mild freeze-thaw climate, the freeze-thaw advantage of pavers is less significant than it would be in northern states.
| Option | 20x20 patio (400 sq ft) — Lawrence / Giles County |
|---|---|
| Plain concrete, broom finish | $3,200 – $6,000 |
| Stamped concrete, single pattern, one color | $6,000 – $8,500 |
| Stamped concrete, dual pattern/accent color, border | $8,000 – $11,000 |
| Concrete pavers, standard pattern | $7,000 – $11,000 |
| Natural stone pavers | $10,000 – $16,000 |
Frequently asked questions
How much does a 20x20 concrete patio cost in Tennessee?
$3,200–$6,000 for plain concrete, $6,000–$10,000 for stamped, $7,000–$12,000 for pavers. These are ACS's actual 2025 project prices for Lawrence and Giles County — not national averages.
Is a 20x20 patio big enough?
For most residential use — 6-person dining set plus grill — yes. 400 sq ft is comfortable for typical family use. For larger gatherings or a separate seating area, 20x24 gives meaningful additional room.
How thick should a concrete patio be in Tennessee?
Four inches is standard for residential foot traffic. Five inches if you're placing a hot tub, outdoor kitchen, or plan vehicle access on the patio. We spec thickness based on what's going on it.
Do I need gravel under a 20x20 concrete patio?
Yes — a compacted crushed stone base is essential. Base depth depends on soil; in Lawrence County's clay areas, 4 inches minimum. This isolates the slab from seasonal soil movement and is one of the most important factors in long-term patio performance.
How long does a concrete patio last in Tennessee?
25–40 years for a properly installed 4-inch slab. Plain concrete needs essentially no maintenance. Stamped concrete needs sealing every 2–3 years to maintain color and finish. Tennessee's mild freeze-thaw climate is favorable to concrete longevity.
Get a free estimate on your concrete patio in Lawrenceburg, Pulaski, or Middle Tennessee. Call (931) 369-2134 or request a quote online. See our concrete services page, our stamped concrete cost guide, and our concrete vs pavers comparison.