Concrete Slab for a Shed: Price and Materials
A 120 sq ft concrete shed slab costs $1,074 to $1,790 with a contractor, or $605 in materials if you pour it yourself. Enter your shed's dimensions and ZIP in the calculator for your own price.
LIKELY INSTALLED PRICE
$1,432
Our installed range for this 10×12 ft, 4-inch slab: $1,074 – $1,790 ($8.95 – $14.92 per sq ft)
In plain terms: that's about the size of a shed pad or a small patio, and roughly 45% of the price is the crew's labor.
- DIY materials
- $605
- Concrete
- 1.48 yd³
- Bagged mix
- 74 80-lb bags
- Delivery
- 1 truck, short load
An estimate, not a bid. A contractor's price depends on your site, access and timing.
What changes the price
Where the money goes
- Materials$652
- Labor$541
- Overhead and profit (20%)$239
All 8 line items
| Item | Qty | Material | Labor | Total |
|---|---|---|---|---|
| Site setup, layout and cleanup | 1 job | $100 | $56 | $156 |
| Excavate and grade subgrade | 120 sqft | $0 | $133 | $133 |
| Forms, stakes and form release | 44 lf | $53 | $98 | $150 |
| Compacted crushed-stone base | 2.07 ton | $93 | $38 | $132 |
| 6x6 W1.4 welded wire mesh | 120 sqft | $44 | $27 | $71 |
| Ready-mix concrete, 3,500 psi, delivered | 1.56 yd3 | $271 | $35 | $305 |
| Short-load delivery fee | 1 job | $85 | $0 | $85 |
| Place, screed and broom finish | 120 sqft | $6 | $155 | $161 |
| Subtotal × overhead and profit (20%) = midpoint | $1,432 | |||
National prices until you enter a ZIP.
Got a quote? Check it
Compare a contractor's price with the range for these inputs.
What next
Get two or three quotes and compare them with $1,074 – $1,790. DIY: 74 bags or 1.56 yd³ of ready-mix.
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Turn this price into an estimate for your customer →Cost by thickness for 10x12 (120 sq ft)
4 in · patios, sheds
$1,074 – $1,790
1.48 yd³ · 74 bags · about $1,432
5 in · garages, driveways
$1,143 – $1,904
1.85 yd³ · 92 bags · about $1,523
6 in · shops, RV pads
$1,211 – $2,019
2.22 yd³ · 110 bags · about $1,615
Is a concrete slab for a shed worth it?
A slab gives a level, dry floor that rodents can't dig under. It costs more than a gravel pad or timber skids. For a workshop or a mower shed, the solid floor is usually worth it.
How to build a concrete slab for a shed
Mark out the pad, dig out the topsoil and compact 2.1 tons of gravel. Set forms, lay 120 sq ft of wire mesh, then pour, screed and float the concrete. Keep it damp for the first few days while it cures.
Concrete slab shed base: bags or truck
This pad needs 74 80-lb bags, or 1.56 yd³ from a ready-mix plant. Small orders often carry a short-load fee, so compare the two. The calculator flags the fee when it applies.
Building a shed on a concrete slab
Match the slab to the kit's footprint and anchor layout before you pour. Keep the top of the slab above the surrounding ground so water runs away from the door. Anchors go in wet concrete or are drilled in after it cures.
A shed slab estimate, not a quote
The price here comes from national wage data and estimated material costs. It's an estimate, not a bid. Local contractors will price access and ground conditions after seeing the site.
DIY vs pro for this 10x12 pour
Materials alone come to $605, about 42% of the $1,432 midpoint contractor price. The difference is $827 of labor, equipment, delivery and contractor overhead across 8 line items. At 1.56 yd³ the pour is under the short-load threshold, so bagged mix or a shared truck avoids a delivery fee.
Related slab sizes
Compare with the next sizes
Frequently asked questions
How thick should a shed slab be?
This one is priced at 4 inches with wire mesh, enough for a storage shed. Go thicker only for heavy machinery.
Do I need a permit for a shed slab?
Small sheds are often exempt, but the slab and setback lines may not be. The building department can tell you.
How big should the slab be compared with the shed?
Follow the kit maker's slab dimensions if they give them. Otherwise, make the slab the same size as the shed walls.
Can I pour a shed slab in one day?
Two people with a rented mixer can usually place a small pad in a day. Prep and forms take longer than the pour.
For contractors
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