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Radon Testing · Mason City, IA

Radon Testing in Mason City

Radon Testing in Mason City, IA by Closer Look Inspectors. A photo-mapped digital report within 24 hours.

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Mason City · Cerro Gordo County

Radon Testing in Mason City

Radon Testing in Mason City, Cerro Gordo County, by Closer Look Inspectors. Mason City is a north-Iowa city of brick Prairie School architecture and postwar neighborhoods.

Radon testing places an EPA-protocol continuous monitor on a home's lowest livable level to measure radon gas — and it matters across Iowa, where Iowa HHS reports 71.6 percent of homes above the action level — the largest percentage of any state.

Mason City is served by our Mason City team →  ·  (563) 517-7815  ·  Our Mason City radon testing notes →

Craftsman bungalow with a covered front porch and stone columns — Radon Testing in Mason City, IAMason City
Local housing

Homes in Mason City.

Mason City housing runs to Prairie School brick and early-1900s Craftsman homes near downtown, postwar ranches on the north and west sides, and Clear Lake cottages and lakeshore rebuilds next door, across the Rock Crest–Rock Glen district, the older core, the postwar additions and the Clear Lake shoreline, on flat Des Moines Lobe till that holds water against foundations, with the Winnebago River and Willow Creek corridors carrying a flood history — and that mix shapes what a radon testing here needs to find.

Local conditions in Mason City

No Iowa law requires a home inspection before a sale — the one mandatory time-of-transfer inspection covers private septic systems (Iowa Code 455B.172) — which makes an independent inspection the only thorough, buyer-side read on a Mason City home. Mason City sits in Cerro Gordo County, and every Iowa county is EPA Radon Zone 1. Iowa HHS reports Iowa has the largest percentage of homes above the 4.0 pCi/L action level of any state — 71.6 percent in the Iowa Radon Survey — and the Iowa seller disclosure form asks for any known radon test results. Finished basements concentrate it, and only a 48-hour test gives you this home's number. Iowa leaves frost depth to the local building code rather than one statewide number, and the annual freeze-thaw cycle drives the settlement cracks and ice-dam wear that Mason City-area homes face.

Home inspection in Mason City →  ·  More about radon testing →

Questions

Common questions.

Is radon really a concern in Iowa?
Yes. The Iowa Department of Natural Resources reports that more than two in five Iowa homes have radon levels that pose a significant health risk, and finished basements are where it concentrates.
How long does the test run?
A 48-hour minimum under closed-house conditions; the result is delivered with your inspection report.
What should a Mason City home inspection include?
Everything, but with three local emphases: a sewer scope on the older neighborhoods' clay laterals under mature trees; a hard read of basement moisture, grading and sump performance on slow-draining lobe till and on the low river and creek lots; and a 48-hour radon test, because Iowa has the largest percentage of homes above the EPA radon action level of any state, per Iowa HHS, and Cerro Gordo County is Radon Zone 1. The report is photo-mapped and delivered within 24 hours.
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