Home Addition Cost Calculator
Calculate home addition costs. Estimate room addition, second story, and bump-out project prices per square foot....
Estimated Total Cost
$80,000-120,000
$200-300 per sq ft
Materials
$40,000
Building materials
Labor
$45,000
All contractors
ROI
50-80%
Value added
Timeline
3-6 mo
Typical duration
💰 Cost Breakdown
Foundation
$15,000
Framing & Structure
$20,000
Roofing/Exterior
$15,000
Electrical & Plumbing
$12,000
Interior Finish
$25,000
📊 Home Addition Costs by Type
| Addition Type | Per Sq Ft |
|---|---|
| Bump-out (small) | $150-250 |
| Room Addition | $200-350 |
| Second Story | $300-500 |
| In-Law Suite | $250-400 |
| Kitchen Extension | $300-600 |
💡 Home Addition Tips
✓ Match existing home style for best ROI
✓ Check zoning laws and setbacks
✓ Add 15-20% budget contingency
✓ Consider permit and design costs
✓ Master suites have highest ROI
About This Tool
Calculate home addition costs. Estimate room addition, second story, and bump-out project prices per square foot.
This free online calculator provides instant, accurate results. No signup required - just enter your values and get your answer immediately.