- Radon mitigation usually costs $780 to $1,250, about $1,000 typical.
- An active sub-slab radon mitigation system with a fan, pipe and gauge.
- Price your own job with the calculator above; it breaks the job into lines.
What radon mitigation costs
Radon mitigation usually runs $780 to $1,250. A typical job lands near $1,000. An active sub-slab radon mitigation system with a fan, pipe and gauge.
| Price | |
|---|---|
| Low end | $780 |
| Typical | $1,000 |
| High end | $1,250 |
Sources: HomeAdvisor and Bob Vila, combined as shown below. Local wages shift the typical price from about $874 in Arkansas to $1,212 in Hawaii.
What drives the price
- Foundation. Slab and basement homes use sub-slab depressurization. Bob Vila puts crawl space mitigation at $800 to $3,000.
- Home size and layout. Bob Vila notes larger and complex homes can cost up to $3,000.
- Pipe route. Running the pipe inside through a closet costs more than outside.
- Running cost. Bob Vila says the fan adds $30 to $300 a year to the power bill.
Extra costs to plan for
| Item | Price | Source |
|---|---|---|
| Professional radon test | $150 to $800 | HomeAdvisor |
| Permits | $25 to $150 | HomeAdvisor |
| Radon fan | $100 to $300 | Bob Vila |
Ask whether each of these is in the quote. Two bids for the same radon mitigation can be far apart only because one includes them.
Radon mitigation cost by state
These state figures are Koira estimates. The labor share of the national price, about 55%, moves with each state's median wage for construction and extraction workers; materials stay at the national price. Use them to sanity-check a radon mitigation quote.
| State | Low | Typical | High |
|---|---|---|---|
| Alabama | $695 | $892 | $1,115 |
| Alaska | $896 | $1,148 | $1,436 |
| Arizona | $769 | $986 | $1,232 |
| Arkansas | $681 | $874 | $1,092 |
| California | $867 | $1,112 | $1,390 |
| Colorado | $792 | $1,015 | $1,269 |
| Connecticut | $867 | $1,112 | $1,390 |
| Delaware | $779 | $998 | $1,248 |
| District of Columbia | $856 | $1,098 | $1,372 |
| Florida | $707 | $906 | $1,132 |
| Georgia | $710 | $910 | $1,137 |
| Hawaii | $945 | $1,212 | $1,514 |
| Idaho | $756 | $969 | $1,211 |
| Illinois | $931 | $1,194 | $1,493 |
| Indiana | $797 | $1,021 | $1,277 |
| Iowa | $779 | $999 | $1,249 |
| Kansas | $747 | $958 | $1,197 |
| Kentucky | $734 | $941 | $1,176 |
| Louisiana | $711 | $911 | $1,139 |
| Maine | $786 | $1,007 | $1,259 |
| Maryland | $782 | $1,003 | $1,254 |
| Massachusetts | $909 | $1,166 | $1,457 |
| Michigan | $792 | $1,015 | $1,269 |
| Minnesota | $874 | $1,120 | $1,401 |
| Mississippi | $688 | $882 | $1,103 |
| Missouri | $796 | $1,020 | $1,275 |
| Montana | $790 | $1,013 | $1,266 |
| Nebraska | $738 | $947 | $1,183 |
| Nevada | $796 | $1,020 | $1,275 |
| New Hampshire | $784 | $1,005 | $1,256 |
| New Jersey | $880 | $1,129 | $1,411 |
| New Mexico | $710 | $911 | $1,139 |
| New York | $858 | $1,100 | $1,375 |
| North Carolina | $707 | $906 | $1,133 |
| North Dakota | $792 | $1,015 | $1,269 |
| Ohio | $799 | $1,024 | $1,280 |
| Oklahoma | $701 | $899 | $1,124 |
| Oregon | $827 | $1,061 | $1,326 |
| Pennsylvania | $787 | $1,009 | $1,261 |
| Rhode Island | $805 | $1,032 | $1,290 |
| South Carolina | $708 | $908 | $1,135 |
| South Dakota | $712 | $913 | $1,141 |
| Tennessee | $715 | $917 | $1,146 |
| Texas | $705 | $904 | $1,130 |
| Utah | $763 | $978 | $1,222 |
| Vermont | $781 | $1,002 | $1,252 |
| Virginia | $758 | $971 | $1,214 |
| Washington | $895 | $1,147 | $1,434 |
| West Virginia | $766 | $982 | $1,228 |
| Wisconsin | $810 | $1,038 | $1,297 |
| Wyoming | $781 | $1,002 | $1,252 |
Cities inside a state can run well above or below the state figure.
How we got these numbers
| Guide | Range | Average | Use |
|---|---|---|---|
| HomeAdvisor | $786 to $1,274 | $1,028 | Counted |
| Bob Vila | $771 to $1,185 | $978 | 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 radon mitigation price. Where a guide gives no average we use its midpoint. All read on October 9, 2026.
Labor share used: 55%. Bob Vila says the flat rate usually includes labor. The share is Koira's assumption. 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
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Sources: HomeAdvisor, radon mitigation cost; Bob Vila, radon mitigation 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.