Houston, TX · 2025 Cost Guide
How Much Does a Home Addition Cost in Houston?
A home addition is the most significant way to add space and value, with returns of 50–80% at resale. In Houston, labor rates run $71–$133/hr — near the national average — which is factored into all estimates on this page.
The wide price range reflects major differences in project scope, materials, and the age of your home. A cosmetic refresh costs far less than a full renovation, and Houston's specific market conditions affect contractor pricing year-round.
| Cost Factor | Typical Range | Impact on Price |
| Square footage added | $80–$250/sq ft | High |
| Foundation type | $5,000–$20,000 | High |
| Permits & engineering | $2,000–$8,000 | Medium |
| HVAC extension | $2,000–$6,000 | Medium |
| Labor | $75–$140/hr | High |
How much does it cost to add a room?
Adding a room typically costs $80–$250 per square foot, or $22,000–$75,000 for a standard bedroom addition.
How long does a home addition take?
Most home additions take 3–6 months from permit approval to completion.
What room addition adds the most value?
A primary bedroom suite addition and additional bathroom add the most value in most markets.