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

§ 4.1 — Chester County, PA

Certified radon testing in Chester County, PA

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

Last verified August 29, 2026. Methodology PA DEP.

Certified radon testingCertified radon mitigation

  1. Arms, Jr., Jeffrey

    current PA DEP № 2925

    testing

    (610) 850-5528August 29, 2026cite ↗

  2. Batten Jr, Joseph

    Safe Shelter En

    current PA DEP № 3525

    mitigation, testing

    (610) 594-0350August 29, 2026cite ↗

  3. Conrad, Spencer

    current PA DEP № 3020

    mitigation, testing

    (570) 573-8159August 29, 2026cite ↗

  4. Culcasi, Ian

    Homer Inspection Ser

    current PA DEP № 9127

    testing

    (610) 314-6155August 29, 2026cite ↗

  5. Cunningham, Aaron

    current PA DEP № 3047

    testing

    (610) 322-6105August 29, 2026cite ↗

  6. Dickens, Matthew

    The Green Valley

    current PA DEP № 8882

    testing

    (610) 347-0620August 29, 2026cite ↗

  7. Dunckley, Edwin

    current PA DEP № 3253

    testing

    (484) 212-1600August 29, 2026cite ↗

  8. Errington, Scott

    current PA DEP № 3479

    testing

    (610) 656-1085August 29, 2026cite ↗

  9. Fritchey, Andrew

    current PA DEP № 3454

    testing

    (610) 836-2206August 29, 2026cite ↗

  10. Gertsen, Erik

    current PA DEP № 3308

    testing

    (610) 241-2417August 29, 2026cite ↗

  11. Gordon, Margie L.

    current PA DEP № 1627

    testing

    (610) 857-0206August 29, 2026cite ↗

  12. Homer Inspection Services

    current PA DEP № 3733

    testing

    (610) 314-6155August 29, 2026cite ↗

  13. Homer, Ernest

    current PA DEP № 3196

    testing

    (610) 314-6155August 29, 2026cite ↗

  14. Keogh, Daniel

    current PA DEP № 2109

    testing

    (610) 450-6056August 29, 2026cite ↗

  15. Kerr, Kevin

    current PA DEP № 2757

    testing

    (610) 324-3064August 29, 2026cite ↗

  16. Laporta, Jr., Ronald

    current PA DEP № 3327

    testing

    (800) 303-0555August 29, 2026cite ↗

  17. Misner, Christopher

    Homer Inspect

    current PA DEP № 9126

    testing

    (610) 314-6155August 29, 2026cite ↗

  18. Murphy, Stephen

    current PA DEP № 3342

    testing

    (610) 506-0689August 29, 2026cite ↗

  19. Peach Inspections

    current PA DEP № 2288

    testing

    (610) 917-1096August 29, 2026cite ↗

  20. Rafiq, Hamid

    current PA DEP № 3552

    testing

    (484) 999-0353August 29, 2026cite ↗

  21. Robinson, Amy

    Peach Inspections

    current PA DEP № 8606

    testing

    (610) 917-1096August 29, 2026cite ↗

  22. Robinson, Steven

    Peach Inspection

    current PA DEP № 3356

    testing

    (610) 917-1096August 29, 2026cite ↗

  23. Saenz, Mary Ann

    current PA DEP № 3589

    testing

    (610) 960-5895August 29, 2026cite ↗

  24. Safe Shelter Environmental

    current PA DEP № 0207

    mitigation, testing

    (610) 594-0350August 29, 2026cite ↗

  25. Schweikert, Joanne

    Homer Inspecti

    current PA DEP № 9128

    testing

    (610) 314-6155August 29, 2026cite ↗

  26. Stumm, Brian

    current PA DEP № 3181

    testing

    (267) 331-0256August 29, 2026cite ↗

  27. The Green Valley Group

    current PA DEP № 3433

    testing

    (610) 347-0620August 29, 2026cite ↗

  28. Thompson, Kevin-the Green Valley Gr

    current PA DEP № 2736

    testing

    (610) 347-0620August 29, 2026cite ↗
Fig. 4 — Chester County, PA, approximate. Pin is the county 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 Pennsylvania

Pennsylvania DEP certifies individuals and firms that test or mitigate radon. The people below appear as currently certified on the DEP Radon Services Directory we imported. Read the methodology. Credential status can change.