Estimated range
$20,000–$100,000
for a room addition
Placeholder range — pending vetted market data. Use the calculator for a real, itemized number.
What drives the cost
- Materials: Framing, roofing, and finishes
- Labor: Foundation, framing, and trade coordination
- Region: Permit fees and labor rates differ by city
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This range is a starting point. The free calculator itemizes materials and labor for your project and location.