- Sunroom addition usually costs $28,000 to $71,500, about $51,000 typical.
- Adding a sunroom to a home, three-season or four-season.
What sunroom addition costs
Sunroom addition usually runs $28,000 to $71,500. A typical job lands near $51,000. Adding a sunroom to a home, three-season or four-season.
| Price | |
|---|---|
| Low end | $28,000 |
| Typical | $51,000 |
| High end | $71,500 |
The range blends Fixr and Bob Vila (method below). Where you live matters: Koira's estimate is $45,139 in Arkansas and $60,806 in Hawaii.
What drives the price
- Three or four season. A four-season room is heated, cooled and insulated, so it costs far more.
- Kit or site-built. Prefab kits cost less than custom framing.
- Foundation. A slab or footings are needed.
- Glass. Better glass makes the room usable in more weather.
Sunroom addition cost by sunroom type
| Sunroom | Price | Source |
|---|---|---|
| Three-season | $10,000 to $40,000 | Bob Vila |
| Four-season | $25,000 to $80,000 | Bob Vila |
Sunroom addition cost by state
Koira estimates for each state, built from the national $28,000 to $71,500. About 50% of a sunroom addition price is labor, and only that part is scaled by the state's median wage for construction and extraction workers. A starting point, not a quote.
| State | Low | Typical | High |
|---|---|---|---|
| Alabama | $25,242 | $45,977 | $64,457 |
| Alaska | $31,780 | $57,885 | $81,152 |
| Arizona | $27,643 | $50,350 | $70,588 |
| Arkansas | $24,782 | $45,139 | $63,284 |
| California | $30,851 | $56,193 | $78,780 |
| Colorado | $28,386 | $51,704 | $72,486 |
| Connecticut | $30,841 | $56,175 | $78,755 |
| Delaware | $27,956 | $50,920 | $71,388 |
| District of Columbia | $30,484 | $55,525 | $77,843 |
| Florida | $25,604 | $46,636 | $65,381 |
| Georgia | $25,707 | $46,823 | $65,644 |
| Hawaii | $33,384 | $60,806 | $85,248 |
| Idaho | $27,203 | $49,548 | $69,465 |
| Illinois | $32,944 | $60,005 | $84,124 |
| Indiana | $28,543 | $51,989 | $72,886 |
| Iowa | $27,980 | $50,964 | $71,450 |
| Kansas | $26,924 | $49,041 | $68,753 |
| Kentucky | $26,494 | $48,257 | $67,654 |
| Louisiana | $25,741 | $46,885 | $65,731 |
| Maine | $28,181 | $51,330 | $71,962 |
| Maryland | $28,078 | $51,143 | $71,700 |
| Massachusetts | $32,215 | $58,678 | $82,264 |
| Michigan | $28,386 | $51,704 | $72,486 |
| Minnesota | $31,066 | $56,585 | $79,329 |
| Mississippi | $25,002 | $45,540 | $63,846 |
| Missouri | $28,513 | $51,935 | $72,811 |
| Montana | $28,333 | $51,606 | $72,349 |
| Nebraska | $26,645 | $48,533 | $68,041 |
| Nevada | $28,513 | $51,935 | $72,811 |
| New Hampshire | $28,127 | $51,232 | $71,825 |
| New Jersey | $31,271 | $56,959 | $79,854 |
| New Mexico | $25,731 | $46,867 | $65,706 |
| New York | $30,553 | $55,649 | $78,018 |
| North Carolina | $25,614 | $46,654 | $65,406 |
| North Dakota | $28,381 | $51,695 | $72,474 |
| Ohio | $28,611 | $52,113 | $73,061 |
| Oklahoma | $25,433 | $46,324 | $64,944 |
| Oregon | $29,545 | $53,815 | $75,446 |
| Pennsylvania | $28,230 | $51,419 | $72,087 |
| Rhode Island | $28,822 | $52,496 | $73,598 |
| South Carolina | $25,653 | $46,725 | $65,506 |
| South Dakota | $25,785 | $46,965 | $65,843 |
| Tennessee | $25,878 | $47,134 | $66,081 |
| Texas | $25,560 | $46,556 | $65,269 |
| Utah | $27,438 | $49,976 | $70,064 |
| Vermont | $28,044 | $51,080 | $71,612 |
| Virginia | $27,271 | $49,673 | $69,639 |
| Washington | $31,751 | $57,831 | $81,077 |
| West Virginia | $27,545 | $50,172 | $70,339 |
| Wisconsin | $28,963 | $52,755 | $73,960 |
| Wyoming | $28,049 | $51,089 | $71,625 |
Rural areas and cities in the same state can differ a lot.
How we got these numbers
How the sunroom addition range is combined: low end from the middle of the guides' lows, high end from the middle of their highs, typical from the middle of their averages (a range's midpoint where no average is given). Figures read on each guide's page 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 patios, decks and outdoor living 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
Outdoor builds are priced by size and material, so show both and add the permit as its own line.
On Koira's free Office plan you build the estimate, text it, collect the deposit and turn it into an invoice when the sunroom addition is done. Price this job in Koira, free.
Sources: Fixr, sunroom addition cost; Bob Vila, sunroom 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.