Delaware Division of Public Health — Office of Healthy Environments Radon Program
Delaware radon service companies (air)
13 companies from the official DHSS voluntary list of radon service companies offering testing and mitigation services. Updated / retrieved 2026-09-14 (US/Pacific).
If you are not sure you need a pro yet, see when a DIY radon test kit is enough or how to test a home for radon.
This is a voluntary list. Delaware does not certify radon contractors. The source PDF is titled “Radon Service Companies Offering Testing and Mitigation Services*” and is dated Rev.7/19. Names, addresses, phones, and Sampling / Mitigation checkmarks are transcribed from that official public list — nothing invented. Status may have changed; re-check the company and also search NRPP and NRSB (the same directories named in the PDF footnote) before hiring.
This page covers indoor air only. Addresses of record include firms based in Delaware, Pennsylvania, Maryland, and Virginia as printed on the list.
Always verify a company is still operating and credentialed before hiring. This index does not rank contractors or take referral fees.
Official sources
- Delaware DHSS — Radon Service Companies Offering Testing and Mitigation Services (PDF) (Rev.7/19; retrieved 2026-09-14)
- Delaware DHSS — Indoor Radon (Office of Healthy Environments Radon Program; retrieved 2026-09-14)
- NRPP Find a Pro (linked from the PDF footnote)
- NRSB find a professional (linked from the PDF footnote)
- U.S. EPA Radon
Showing 13 of 13
DHSS voluntary radon service companies
13 companies · 12 sampling · 5 mitigation (4 both; 8 sampling only; 1 mitigation only). Not a license roster.
| Company | Sampling | Mitigation | Address | City | State | ZIP | Phone |
|---|---|---|---|---|---|---|---|
| Ameri Spec Home Inspection Service | Yes | — | P.O. Box 862 | Hockessin | DE | 19701 | (302) 996-0405 |
| A-1 Home Inspection, LLC | Yes | — | 19 Tamarack Lane | White Haven | PA | 18661 | (302)521-6449 |
| Radon Specialists, Inc. | Yes | Yes | 10 Gogh Circle | Newark | DE | 19702 | 302-834-7100 |
| Reliable Home Inspection Service, Inc. | Yes | Yes | 100 Old Kennet Rd. | Greenville | DE | 19807 | (302) 993-9100 |
| Safe Shelter Environmental | Yes | Yes | 346 N. Pottstown Pike | Exton | PA | 19341 | (610) 594-0350 |
| Home Pro Systems | Yes | — | 6303 Hilltop Drive | Brookhaven | PA | 19015 | (610) 328-5525 |
| All American Home Inspection Services, Inc. | Yes | — | 1549 Smithway | Newark | DE | 19702 | (302) 731-8816 |
| U.S. Inspect LLC | Yes | — | 14501 George Carter Way Suite 110 | Chantilly | VA | 20151 | (888) 874-6773 |
| Logton Home Inspections LLC | Yes | — | 207 Kirkbrae Rd | Kennett Square | PA | 19348 | (484) 886-1922 |
| Lawson Home Services, LLC | Yes | Yes | 115 Atlantic Avenue | Milton | DE | 19968 | (302) 684-3418 |
| HouseMaster | Yes | — | 184 Maple Shade Drive | Magnolia | DE | 19962 | (302) 284-4268 |
| MAG Home Inspections | Yes | — | 44 Tally Ho Drive | Elkton | MD | 21921 | (410) 398-3260 |
| Next Step Environmental Services | — | Yes | 165 Charlies Court | Felton | DE | 19943 | (302) 228-2254 |
No Amazon kit links on this state page. Air radon only.