How much does a concrete slab cost in Washington, DC?
Poured concrete pad with forms, gravel base, and rebar. Priced against Washington, DC material costs, a typical DIY concrete slab in Washington runs about $751 in materials — 22% above the national average. These are estimates only, not a quote — enter your real dimensions in the free calculator for a shopping list matched to your build.
Estimates only — not a quote.
Washington cost breakdown
| Estimate | Low | Typical | High |
|---|---|---|---|
| Washington (DIY materials) | $638 | $751 | $1,014 |
| National average | $524 | $616 | $832 |
Priced from the Washington, DC material index — 22% above the national average. Based on a common-size concrete slab; enter your own dimensions for an exact number.
DIY materials estimate: $751. A contractor in the Washington market (materials plus about 15 labor hours at ~$82/hr) estimates to $1,884–$2,526. Estimated DIY savings: $1,389 (65%).
Flatwork under about 200 sq ft is often permit-exempt; larger pours and anything structural generally are not.
Get your exact Washington price
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Frequently asked questions
How much does a concrete slab cost in Washington, DC?
Materials typically run $638–$1,014 for a common-size project using Washington-area pricing. That is an estimate, not a quote — our free calculator prices your exact dimensions.
Is it cheaper to DIY or hire a contractor in Washington?
DIY materials estimate to about $751. A local contractor estimates to $1,884–$2,526 at the Washington-area labor rate of roughly $82/hr, so DIY could save an estimated $1,389 (65%).
Do I need a permit for a concrete slab in Washington?
Flatwork under about 200 sq ft is often permit-exempt; larger pours and anything structural generally are not. City of Washington rules can be stricter than the state baseline — run the free permit lookup for your ZIP before buying materials.
Why is Washington concrete slab pricing different from the national average?
We apply a regional material cost index for the Washington market — currently 22% higher than the national average. Labor is indexed separately at about $82/hr for the contractor comparison.
Other projects in Washington
Concrete slab cost in nearby cities
Looking at the whole state? Concrete slab cost in District of Columbia.