8x10 Shed Base Cost Guide 2026
Estimate 8x10 concrete shed base cost with slab thickness, yards, bag counts, gravel base, anchors, access, ready-mix, and contractor quote checks.
An 8x10 shed base is 80 square feet. It is small enough to consider bags, but large enough that base prep, drainage, anchors, and finish still matter. The lowest material number can become expensive if the shed slab is out of level, too thin, or missing a gravel base.
Use the Concrete Shed Base Calculator for exact yards and bags. For broader shed planning, see the Shed Base Concrete Mix Calculator Guide and Shed Base Gravel Depth Guide.
Local service matrices such as LocalConcreteContractor's concrete shed slab page show why this is not only a volume query. Homeowners often need a quote scope for excavation, base prep, and access.
Quick answer
At 4 inches thick, an 8x10 shed base needs about 1.09 yd3 with 10% waste, or about 49 common 80 lb bags. At $165 per yd3 plus a $125 small-load delivery fee, the ready-mix material check is about $304.85.
| Thickness | With 10% waste | 80 lb bags | Ready-mix material check |
|---|---|---|---|
| 4 in | 1.09 yd3 | 49 | $304.85 |
| 5 in | 1.36 yd3 | 62 | $349.40 |
| 6 in | 1.63 yd3 | 74 | $393.95 |
These numbers do not include excavation, gravel, forms, reinforcement, shed anchors, tax, cleanup, or contractor labor.
Shed base quote checklist
| Quote line | Ask before approving |
|---|---|
| Pad size | Is the slab exactly 8x10, or larger than the shed footprint? |
| Thickness | Is the quote based on 4, 5, or 6 inches? |
| Gravel base | Depth, compaction, drainage, and fabric if needed. |
| Reinforcement | Mesh, fiber, rebar, or none. |
| Anchors | Are anchor bolts, straps, or post bases included? |
| Access | Can bags or ready-mix reach the shed location? |
| Finish | Broom, trowel, edge, slope, and curing method. |
Use the Concrete Shed Base Contractor Quote Checklist if you are comparing installed bids.
Bags or ready-mix?
An 8x10 shed base is near the range where either option can make sense.
| Option | Better when | Watch out for |
|---|---|---|
| Bags | Tight backyard access or no truck route. | Mixing 49+ bags is still a real workday. |
| Ready-mix | Truck access is good and finish timing matters. | Short-load fee may dominate the material price. |
| Contractor | Base prep, anchors, and drainage need to be handled. | Confirm what is excluded. |
Run the Ready-Mix vs Bags Calculator before you decide.
FAQ
How much concrete for an 8x10 shed base?
At 4 inches thick, plan about 1.09 yd3 with 10% waste.
How many 80 lb bags for an 8x10 shed slab?
At 4 inches thick with 10% waste, plan about 49 common 80 lb bags.
Should an 8x10 shed slab be bigger than the shed?
Sometimes, but a slab that projects past the shed walls can collect water if it is not detailed correctly. Confirm the shed manufacturer's base instructions.
Next step
Check the exact slab in the Concrete Shed Base Calculator, then review any installed bid with the Concrete Quote Reviewer.
Quote planning next step
Turn this guide into a concrete buying check
Run the matching calculator, then compare ready-mix, bagged concrete, delivery fees, access needs, and quote gaps before you buy materials or approve a contractor number.