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

§ 4.1 — Ashburn, VA

Certified radon testing in Ashburn, VA

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

Last verified August 29, 2026. Methodology NRPP. NRSB.

Certified radon testingCertified radon mitigation

  1. Adam Donaldson

    Us Inspect, Llc

    current NRPP № 107148

    testing

    (888) 874-6773August 29, 2026cite ↗

  2. Jason B. Donofrio

    Donofrio Property Inspections, Inc.

    current NRPP № 106438

    testing

    (703) 771-8374August 29, 2026cite ↗

  3. Jerry F Kidwell

    Due Diligence Solutions

    current NRPP № 114200

    testing

    (571) 413-4733August 29, 2026cite ↗

  4. Lixin Luke Wang

    Lx Inspections

    current NRSB № RMS-15ST003

    testing

    August 29, 2026cite ↗

  5. Scott Biller

    Biller And Associates

    current NRPP № 110897

    testing

    (571) 528-6817August 29, 2026cite ↗
Fig. 4 — Ashburn, VA, 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 Virginia

Virginia pages here use current NRPP or NRSB certifications. City pages use the city printed on that record, not a ZIP-radius search. A national certification is not a Virginia license. Some states require a separate state credential to work legally. Read the methodology. Credential status can change.