- Home addition usually costs $22,000 to $100,000, about $51,000 typical.
- Adding a room to a home, such as a family room or bedroom.
What home addition costs
Home addition usually runs $22,000 to $100,000. A typical job lands near $51,000. Adding a room to a home, such as a family room or bedroom.
| Price | |
|---|---|
| Low end | $22,000 |
| Typical | $51,000 |
| High end | $100,000 |
National figures from Fixr, HomeAdvisor and Bob Vila, combined as shown below. Labor rates move the price by state: about $60,806 typical in Hawaii against $45,139 in Arkansas.
What drives the price
- Size. Fixr prices a 300 square foot family room.
- Room type. Kitchens and baths cost more than bedrooms.
- Up or out. Second-story additions need structural work.
- Matching. Matching siding, roof and finishes adds work.
Home addition cost by state
Estimates by state, made by Koira: the national home addition range with its labor part, roughly 50%, adjusted to local wages for construction and extraction workers. Real quotes vary with the job.
| State | Low | Typical | High |
|---|---|---|---|
| Alabama | $19,833 | $45,977 | $90,150 |
| Alaska | $24,970 | $57,885 | $113,500 |
| Arizona | $21,720 | $50,350 | $98,725 |
| Arkansas | $19,472 | $45,139 | $88,509 |
| California | $24,240 | $56,193 | $110,182 |
| Colorado | $22,304 | $51,704 | $101,380 |
| Connecticut | $24,232 | $56,175 | $110,147 |
| Delaware | $21,965 | $50,920 | $99,843 |
| District of Columbia | $23,952 | $55,525 | $108,872 |
| Florida | $20,117 | $46,636 | $91,443 |
| Georgia | $20,198 | $46,823 | $91,809 |
| Hawaii | $26,230 | $60,806 | $119,228 |
| Idaho | $21,374 | $49,548 | $97,153 |
| Illinois | $25,884 | $60,005 | $117,656 |
| Indiana | $22,426 | $51,989 | $101,939 |
| Iowa | $21,985 | $50,964 | $99,930 |
| Kansas | $21,155 | $49,041 | $96,158 |
| Kentucky | $20,817 | $48,257 | $94,621 |
| Louisiana | $20,225 | $46,885 | $91,932 |
| Maine | $22,142 | $51,330 | $100,646 |
| Maryland | $22,061 | $51,143 | $100,279 |
| Massachusetts | $25,312 | $58,678 | $115,054 |
| Michigan | $22,304 | $51,704 | $101,380 |
| Minnesota | $24,409 | $56,585 | $110,950 |
| Mississippi | $19,645 | $45,540 | $89,294 |
| Missouri | $22,403 | $51,935 | $101,834 |
| Montana | $22,261 | $51,606 | $101,188 |
| Nebraska | $20,936 | $48,533 | $95,162 |
| Nevada | $22,403 | $51,935 | $101,834 |
| New Hampshire | $22,100 | $51,232 | $100,454 |
| New Jersey | $24,570 | $56,959 | $111,684 |
| New Mexico | $20,217 | $46,867 | $91,897 |
| New York | $24,006 | $55,649 | $109,116 |
| North Carolina | $20,125 | $46,654 | $91,477 |
| North Dakota | $22,300 | $51,695 | $101,362 |
| Ohio | $22,480 | $52,113 | $102,183 |
| Oklahoma | $19,983 | $46,324 | $90,831 |
| Oregon | $23,214 | $53,815 | $105,519 |
| Pennsylvania | $22,181 | $51,419 | $100,821 |
| Rhode Island | $22,645 | $52,496 | $102,934 |
| South Carolina | $20,156 | $46,725 | $91,617 |
| South Dakota | $20,260 | $46,965 | $92,089 |
| Tennessee | $20,333 | $47,134 | $92,421 |
| Texas | $20,083 | $46,556 | $91,285 |
| Utah | $21,558 | $49,976 | $97,992 |
| Vermont | $22,035 | $51,080 | $100,157 |
| Virginia | $21,428 | $49,673 | $97,398 |
| Washington | $24,947 | $57,831 | $113,395 |
| West Virginia | $21,643 | $50,172 | $98,376 |
| Wisconsin | $22,757 | $52,755 | $103,440 |
| Wyoming | $22,038 | $51,089 | $100,175 |
Big metro areas often run above their state's figure.
How we got these numbers
| Guide | Range | Average | Use |
|---|---|---|---|
| Fixr | $30,000 to $100,000 | $65,000 | Counted |
| HomeAdvisor | $21,895 to $83,355 | $50,994 | Counted |
| Bob Vila | $21,000 to $100,000 | $48,860 | Counted |
We take the middle of the guides' lows for the low end, the middle of their highs for the high end, and the middle of their averages for the typical home addition price. Where a guide gives no average we use its midpoint. All read on October 9, 2026.
Labor share used: 50%. None of the guides splits labor out for this job, so this share is Koira's working assumption for additions and big projects work. State factor: the state's median hourly wage for construction and extraction workers over the national $28.63 (BLS, May 2025), kept between 0.7 and 1.4.
For contractors: price this job in Koira
Big projects need deposits and progress payments, so put the schedule of payments on the estimate.
With Koira's free Office plan, the home addition estimate, the deposit and the final invoice live in one place, sent by text. See estimates. Price this job in Koira, free.
Sources: Fixr, home addition cost; HomeAdvisor, home addition cost; Bob Vila, home addition cost; BLS Occupational Employment and Wage Statistics, May 2025 (state and national files). Prices checked October 9, 2026. More for your trade: how the trade runs on Koira.