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Keith D. SeffernickLicensed

Licensed radon professional based in Delphos, Allen County, OH

Company	Keith Seffernick
License number	RC173 / RS279
License type	Radon Mitigation Contractor and Specialist
License status	Active, Ohio ODH licensed
License expires	February 12, 2028
Based in	Delphos, Allen County, Ohio 45833

"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 #RC173 / RS279 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.

Checked against ODH radon licensure data, last checked 2026-11-02. See the issuing agency.

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