Estimating additions and ADUs in Houston, TX
Prices for additions and ADUs in Houston, TX, how they compare with the national median and what to know when bidding here, for remodeling contractors.
Start your 30-day free trial
No contract. No setup fees. Cancel anytime.
Room addition prices in Houston
Q4 2026 pricing. Ranges are rounded to the nearest $50, or $100 from $5,000 up.
1 story over a basement
$38,000 to $252,000
150 to 1,000 square feet
National median: $45,700 to $302,100.
2 story over a basement
$58,500 to $393,800
150 to 1,000 square feet
National median: $69,300 to $464,400.
How Houston compares
Across the work in the cost data, Houston prices run 13% below the national median.
More work in Houston
- Kitchen remodelsCabinets, countertops, appliances and finishes.
- Bathroom remodelsTile, fixtures, vanities and plumbing rough-ins.
- GaragesOne and two car garages, framed and sided.
- Decks and porchesFraming, decking, railings and stairs.
- PaintingInterior and exterior, by surface area and substrate.
- Electrical workService upgrades, rough-ins, fixtures and finish work.
- All of Houston, TXEvery category, against the national median.
- Additions and ADUs nationallyNational ranges, cost drivers and the estimate's structure.
Estimate additions and ADUs with Houston prices
No contract. No setup fees. Cancel anytime.