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National Property InspectionsLicensed

Licensed radon professional based in Coralville, Johnson County, IA

Company	TwentyOne Enterprises Inc.
License number	RNTST10166
License type	Radon Measurement Specialist
License status	Active, Iowa HHS certified
Based in	Coralville, Johnson County, Iowa 52241

"Based in" is the city and county of the address on the business's license record. That can be a mailing address; it doesn't tell you where the business works.

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How to verify this license

We publish the license details exactly as they appear in the official licensing records of the agency that issued the license; we do not vouch for the business itself. Before hiring, look up license #RNTST10166 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.

Checked against Iowa HHS radon credential lists, last checked 2026-11-02. See the issuing agency.

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