Concrete Slab Cost in Washington, DC
In Washington, DC, concrete slab costs about $3,840 for a 400 sq ft slab, with most jobs from $1,920 to $8,320. That is 28% above the national typical price of $3,000.
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Concrete Slab price range in Washington
| Low | Typical | High | |
|---|---|---|---|
| Price in Washington | $1,920 | $3,840 | $8,320 |
| US national price | $1,500 | $3,000 | $6,500 |
| Difference | +$420 | +$840 | +$1,820 |
Prices in Washington also shift with the season; busy months cost more. Local cost index used: 1.28 (1.00 is the US average).
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What affects the price in Washington
- House or job size
- Material and quality grade
- Local labor rates
- Permits and inspections
The price covers a 400 sq ft slab. Typical project time is 1 to 3 days plus curing. Expected life: 25 to 30 years.
How to get a fair price in Washington
- Collect at least three written quotes from licensed and insured District of Columbia contractors.
- Ask for the price split into labor, materials and permits.
- Check licenses with the District of Columbia state licensing board.
- Pay in stages tied to finished work, not all up front.
Frequently asked questions
How much does concrete slab cost in Washington?
About $3,840, with a typical range of $1,920 to $8,320 for a 400 sq ft slab.
Is concrete slab more expensive in Washington than average?
It is 28% above the national typical price.
Does the price include permits?
Sometimes. Ask your contractor whether permits, disposal and cleanup are in the quote.
Sources and method
- Bureau of Economic Analysis: regional price parities
- U.S. Bureau of Labor Statistics: Occupational Outlook Handbook
- Prices are modelled estimates, not quotes
Page last updated November 2026. See our editorial policy and disclaimer.