Radon Mitigation in Boise, Idaho

36% of tested homes in some Boise zip codes are above the EPA radon action level. One-day mitigation installs across the North End, the Bench, the foothills, and Southeast Boise, verified with a clearance test.

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Radon in Boise, from the North End to the Bench

Boise sits on soil that releases radon from naturally decaying uranium, and the numbers show it: 36% of tested homes in some Boise zip codes come back above the EPA action level. It doesn't map to home price or age. Foothills customs, North End craftsman homes with basements, Bench ranchers over crawl spaces, and new builds in Southeast Boise all test high at similar rates, because the source is the geology, not the house.

What changes across Boise is the fix. The North End, East End, and the Depot Bench are basement country, those homes get sub-slab depressurization, and finished basements are workable with smart suction-point placement. The postwar ranchers across the Bench and much of Southeast Boise sit over vented crawl spaces, which take a sealed sub-membrane system. Split-levels and older homes with additions often need both, tied to one fan.

Boise's real estate market is also where radon shows up most urgently. Testing is standard in Boise home inspections now, Idaho requires radon disclosure in transactions, and a high result mid-sale is a deadline problem. That exact scenario is our real estate radon service: install within days, clearance test in 24 to 48 hours, closing stays on track.

Boise neighborhoods we work

North End & East End — historic homes with basements; sub-slab systems, finished-basement friendly routing.
Boise Bench (Depot, Central, Morris Hill) — postwar ranchers over crawl spaces and basements; combined systems are common here.
Foothills & Highlands — hillside customs on granite-derived soils; walk-out basements with mixed foundations.
Southeast Boise & Barber Valley — newer construction, mostly crawl space; some builds have passive radon rough-ins that just need a fan activated.
West Boise & State Street corridor — mixed-era housing, mixed foundations, quoted per home.

Boise zip codes we serve

837028370383704837058370683709837128371383716

Common questions

How bad is radon in Boise?

In some Boise zip codes, 36% of tested homes come back above the EPA action level of 4.0 pCi/L, and statewide, 2 in 5 tested Idaho homes are high. Radon comes from uranium breaking down in the soil under the city, so it shows up in the North End, the Bench, the foothills, and brand-new subdivisions alike.

Do older North End and Bench homes have more radon risk?

Not more risk from the soil, but different entry paths. Basement-heavy older neighborhoods give radon a large below-grade surface to enter through, and those homes usually get sub-slab depressurization. Homes over crawl spaces get a sealed sub-membrane system instead. Same gas, different fix.

Can you work around a finished basement?

Yes. Suction points can usually be placed in unfinished corners, mechanical rooms, or closets, with piping routed through chases or a garage. A finished basement in the North End or on the Bench almost never blocks a clean install.