Certified radon testers & mitigatorsIllinois — testing — verified 29 Aug 2026

§ 4.1 — Tinley Park, IL

Certified radon testing in Tinley Park, IL

3 current listings from the official file. Verify the credential number before you hire.

Last verified August 29, 2026. Methodology IL IEMA.

Certified radon testingCertified radon mitigation

  1. Diddens, Kayle

    Tri-county Radon Measurement

    current IL IEMA № RNI2018218

    testing

    708-429-0436August 29, 2026cite ↗

  2. Nicholson, William

    Bill Nicholson Home Inspection

    current IL IEMA № RNI2011203

    testing

    708-595-8858August 29, 2026cite ↗

  3. Zughayyer, Mohamed

    A To Z Radon Inspectors

    current IL IEMA № RNI20232046

    testing

    708-785-8855August 29, 2026cite ↗
Fig. 4 — Tinley Park, IL, approximate. Pin is the city on the official file, not a street address.

Appendix A — Before you hire

  1. Who holds the credential, and can they show the same number that appears on this page?
  2. What test method or mitigation system will they use for this building?
  3. How will they document results or the finished system?

§ 4.3

Nearby places in Illinois

Illinois IEMA licenses radon measurement and mitigation professionals and technicians. The people below appear on the active licensee listing we imported. Read the methodology. Credential status can change.