2026 Cost Guide · Lexington & Fayette County
Concrete Slab & Pad Cost in Lexington, KY
The cost to pour a concrete slab is typically $6 to $12 per square foot installed, or about $2,400 to $4,800 for a 20x20 pad, based on HomeGuide's 2026 figures.
Angi's national range is a little lower at $4 to $8 per square foot, and its state table lists Kentucky at about $5.20 to $5.70.
Shed pads, hot tub pads, patio slabs and garage floors are all priced the same basic way: by area, thickness, base work and finish. These are published ranges, not our quotes.
What does it cost to pour a concrete slab by size?
Need exact amounts? Try our concrete calculator.
| Slab size | Square feet | HomeGuide range | Angi average |
|---|---|---|---|
| 10x10 | 100 | $600–$1,200 | $600 |
| 12x12 | 144 | $860–$1,700 | — |
| 20x20 | 400 | $2,400–$4,800 | $2,400 |
| 20x30 | 600 | $3,600–$7,200 | — |
| 30x30 | 900 | $5,400–$10,800 | $5,400 |
Concrete pad cost by project
| Project | Typical size | Typical installed cost |
|---|---|---|
| Shed pad | 100–400 sq ft | $600–$4,800 |
| Hot tub pad | sized to the tub | $500–$2,500 ($5–$10 per sq ft) |
| Patio slab | 200–400 sq ft | $1,000–$6,000 |
| 2-car garage floor | 400–576 sq ft | $2,400–$6,900 |
| House slab foundation | whole footprint | $6–$14 per sq ft, about $12,000–$28,000 |
A slab foundation for a house is a bigger job than a pad: usually 6 inches thick with rebar, a vapor barrier and foam insulation, which is why it costs more per square foot.
Concrete slab cost per square foot by thickness
Most pads are 4 to 6 inches thick. HomeGuide lists a 4-inch slab at about $6 to $8 per square foot, 6 inches at $8 to $10, and 8 inches at $10 to $12.
Concrete slab cost calculator: a quick estimate
Multiply length by width for square feet, then by $6 to $12 for a typical installed range.
For the concrete itself, cubic yards = length × width × thickness in inches ÷ 324; one cubic yard covers about 81 square feet at 4 inches. Add 5% to 10% for waste.
What affects concrete slab cost?
- Base and grading. A gravel base runs about $1 to $3 per square foot, and leveling a yard about $0.40 to $2.00.
- Thickness and reinforcement. Hot tubs, vehicles and soft soil call for a thicker slab, rebar or wire mesh.
- Tear-out. Removing an old slab costs about $3 to $8 per square foot including disposal.
- Finish. Broom finish is the baseline. Sealing adds about $1 to $3 per square foot; stamping runs about $8 to $19 per square foot installed.
- Labor and access. Labor is about $3 to $5 per square foot. Tight backyards can add time or a concrete pump.
Kentucky climate notes for slabs and pads
- Mix: Lexington winters cross the freezing point again and again. For outdoor pads that freeze and may see salt, the National Ready Mixed Concrete Association(NRMCA) recommends 4,000 psi concrete with about 6% entrained air.
- Drainage: give the pad a slight slope so rain runs off. Water that pools, soaks in and then freezes is what makes a slab's surface flake (scaling).
- Salt: in the first winter, put sand on the pad instead of deicer. After that, moderate amounts of rock salt or calcium chloride are considered acceptable; NRMCA says never to use ammonium- or magnesium-based deicers.
Concrete slab cost FAQs
How much does a 10x10 concrete slab cost?
About $600 to $1,200 installed by HomeGuide's figures; Angi's average is about $600. Small pours often cost more per square foot because of minimum delivery fees.
How much does a concrete pad for a hot tub cost?
HomeGuide puts a hot tub slab at about $5 to $10 per square foot, or $500 to $2,500 total. Follow the tub maker's pad requirements for thickness and reinforcement.
How thick should a shed pad be?
Most shed slabs are about 4 inches thick and usually don't need reinforcement (HomeGuide). Heavier loads or anything you drive on usually need more.
How long does a concrete slab last?
HomeGuide puts typical slab life at 30 to 50 years and notes concrete cracks more where the ground freezes regularly. A compacted base, good drainage and control joints help.
Can concrete be poured in winter in Lexington?
Yes. Under American Concrete Institute guidance, a pour counts as cold-weather work when the air is 40°F or colder, or is forecast to get there. A new slab or pad has to be protected from freezing until it reaches about 500 psi.
For a shed or hot tub pad, that usually means insulated blankets, a heated or accelerated mix, or waiting for a milder week. Give the slab extra time before the shed or tub goes on it.
How much does it cost to pour a 10x20 concrete slab?
A 10x20 slab is 200 square feet. At HomeGuide's typical installed range of $6 to $12 per square foot, that's about $1,200 to $2,400. A 4-inch slab sits near the low end. Thicker slabs, extra base work, tear-out or a hard-to-reach yard push it higher.
Planning a patio, hot tub pad or pergola slab? See our concrete patios and slabs page.
Get a real price for your slab
Tell us the size and what the slab is for, and a local Lexington concrete contractor will follow up to set a free on-site estimate. Call 859-927-8679 or use the quote form.
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