Home Addition Cost in Texas
Updated July 2026 · Based on Texas contractor data
$39,200
Low Estimate
$78,400
State Average
$141,120
High Estimate
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Total Cost
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Cost per Sq Ft
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Home Addition Costs in Texas (400 sq ft)
| Addition Type | Cost in TX | Per Sq Ft | National |
|---|---|---|---|
| Bedroom | $45,080 | $113/sqft | $46,000 |
| Bathroom | $86,240 | $216/sqft | $88,000 |
| Garage | $27,440 | $69/sqft | $28,000 |
| Sunroom | $54,880 | $137/sqft | $56,000 |
| Second Story | $113,680 | $284/sqft | $116,000 |
| Adu | $90,160 | $225/sqft | $92,000 |
Home Additions in Texas
Texas home addition costs are near the national average. No state income tax keeps contractor overhead lower. Houston and DFW have competitive contractor markets. Always pull permits — Texas cities enforce code strictly.
What's Included in Home Addition Costs
- • Design and architectural drawings: $2,000–$8,000
- • Permits and inspections: $1,470–$4,900
- • Foundation: $4,900–$19,600 depending on type
- • Framing, roofing, exterior: $25–$59/sqft
- • Interior finishes: $39–$118/sqft
Planning Tips
- • Budget 10–20% contingency for unexpected issues
- • Get quotes from at least 3 licensed general contractors
- • Confirm zoning setback requirements before designing
- • Consider financing options: HELOC rates vary by state
Get Free Home Addition Quotes in Texas
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Get Free Quotes →Frequently Asked Questions
How much does a home addition cost in Texas?
Home additions in Texas cost $39,200–$141,120, with an average around $78,400.
How much does it cost to add a bedroom?
Adding a bedroom in Texas costs $45,080–$63,112 for a typical 400 sq ft room.
Is a home addition worth it?
Home additions typically recoup 50–80% of cost at resale. ADUs offer the best ROI through rental income potential.
How long does a home addition take?
A bedroom/bathroom addition takes 1–3 months. A second-story addition or ADU takes 3–6 months. Include 4–8 weeks for permitting.
What is the cheapest type of home addition?
A garage or sunroom addition is typically cheapest at $27,440–$54,880 for 400 sq ft.