Additions and Remodels Cost in District of Columbia in 2026
Most Additions and Remodels projects in District of Columbia cost between $58,000 and $270,000. The typical price is $125,000.
Labour and materials in District of Columbia run about 18% above the national average. These figures are adjusted for that, so they are not the national average you will find elsewhere.
What drives the price
- Whether the addition needs its own foundation and roof tie-in
- Adding a bathroom or kitchen (plumbing and electrical runs)
- Structural work to the existing wall being opened up
- Local permit and inspection requirements
Usually included
- Framing, roofing and siding to match
- Electrical rough-in and finish
- Insulation, drywall and paint
- Flooring and trim
Usually extra
- Permits and architectural drawings
- Site work or tree removal
- High-end fixtures and appliances
Unit prices in District of Columbia
| Quality tier | Cost per sq ft |
|---|---|
| Budget | $145 |
| Mid-range | $315 |
| High-end | $670 |