Additions and Remodels Cost in Missouri in 2026
Most Additions and Remodels projects in Missouri cost between $51,000 and $235,000. The typical price is $110,000.
Missouri prices track the national average closely. Costs here are close enough to the national picture that the adjustment barely moves the number.
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 Missouri
| Quality tier | Cost per sq ft |
|---|---|
| Budget | $130 |
| Mid-range | $275 |
| High-end | $590 |