How to find a radon expert in Lancaster, PA
About 51% of basement tests in Lancaster, about one in 2, came back at or above EPA's 4 pCi/L action level. That's out of 37,640 tests in PA DEP's records. That's below Lancaster County as a whole (55%) and above the statewide share (37%). The median Lancaster result (4.1 pCi/L) is above the 4 pCi/L line, so a typical basement test here would call for action. The Lancaster County median is 4.7 pCi/L.
Source: computed 2026-10-11 from PA DEP's Radon Test Results (data.pa.gov, public domain), using tests with a Lancaster municipality/mailing name. Counts tests, not homes, and includes repeat and post-mitigation tests.
Lancaster at a glance
Share of basement tests ≥ 4 pCi/L
Get free quotes Browse all Lancaster radon firms · Lancaster County
Lancaster compared with other PA cities
Among the 33 Pennsylvania cities with guides on Radon Roster, Lancaster ranks #7 by share of basement tests at or above 4 pCi/L. About 19,133 Lancaster basement tests in DEP's records were at or above 4 pCi/L. Most homes in a high-share area won't know their number until they test, so ask a certified tester to start there.
Nearby city guides: Mechanicsburg · Harrisburg · Reading · Stroudsburg
What a typical Pennsylvania radon system install involves
Most systems use active soil depressurization (EPA Consumer's Guide to Radon Reduction). The installer drills a suction point through the basement slab (or seals a crawlspace with a membrane), runs PVC pipe to an inline fan, and vents the exhaust above the roofline. Then they seal major openings and add a pressure gauge. A follow-up test should confirm the level dropped. PA DEP describes the confirm-then-mitigate steps on PA DEP: Radon in the Home.
Radon mitigation cost: what Lancaster homeowners can expect
| Item | Typical range (national) |
|---|---|
| Mitigation system installed | $786-$1,274, average about $1,028 (reported range $395-$2,453) |
| Professional radon test | $150-$800 |
Source: HomeAdvisor cost guide. These are national figures, not local quotes. Prices depend on foundation type, the number of suction points and pipe routing. Try the estimate tool.
Nearest certified radon firms
Nearest DEP-certified firms: 1 based in Lancaster (0 mitigation), 8 elsewhere in Lancaster County (3 mitigation), and 17 mitigation firms in neighboring counties.
Fritsch, Andrew
✓ PA DEP certifiedMitigationEphrata1 certified person
Fritsch, Andrew
✓ PA DEP certifiedMitigationAddress
- 110 S Line Rd, Ephrata, PA
- ✉ andrew@bauderbasement.com
- bauderbasement.com
Certified individuals
- Fritsch, Andrew (mitigation #3541)
DEP cert IDs
Source: DEP list, retrieved 2026-10-11 · Claim, correct or remove this listing
Jk Mechanical Inc
✓ PA DEP certifiedMitigationTestingWillow Street3 certified people
Jk Mechanical Inc
✓ PA DEP certifiedMitigationTestingAddress
- 202 W Kendig Rd, Willow Street, PA
- ✉ bshimp@jkmechanical.com
- ✉ serivce@jkmechanical.com
- jkmechanical.com
Certified individuals
- Salvatore, Alexander (mitigation #7729)
- Salvatore, Andrew (mitigation #7730)
- Shimp, Brian (testing #3747, mitigation #3747)
DEP cert IDs
Source: DEP list DEP list, retrieved 2026-10-11 · Claim, correct or remove this listing
Rjh Radon Mitigation Inc
✓ PA DEP certifiedMitigationAkron2 certified people
Rjh Radon Mitigation Inc
✓ PA DEP certifiedMitigationAddress
- Po Box 91, Akron, PA
- ✉ rjhradonpa@gmail.com
Certified individuals
- Hoffman, Elliot (mitigation #3058)
- Sauder, Keith (mitigation #7582)
DEP cert IDs
Source: DEP list, retrieved 2026-10-11 · Claim, correct or remove this listing
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Buying or selling in Lancaster? Radon timing tips
- Pennsylvania sellers must give buyers a property disclosure statement before an agreement of sale is signed. The Real Estate Commission's minimum form asks whether the seller knows of hazardous substances "including... radon" and whether the property has been tested (49 Pa. Code § 35.335a; 68 Pa.C.S. Chapter 73).
- Sellers aren't required to test, but must not hide known defects (68 Pa.C.S. § 7308).
- Real estate radon tests by certified testers follow DEP anti-tampering rules, including a signed non-interference agreement (25 Pa. Code Chapter 240). Book the test early in the inspection contingency window, because short-term tests run at least 2 days plus lab time.
- If a result is high near closing, ask certified mitigators for written quotes. Buyers and sellers often negotiate who pays for a system.
General information, not legal advice.
How to verify a Lancaster radon contractor's PA DEP certification
- Check the name against DEP's current certified mitigation and testing lists in the PA DEP Radon Services Directory. The lists are updated periodically, and ours were retrieved 2026-10-11.
- Ask for the DEP certification number and photo ID. Pennsylvania requires anyone doing radon testing, mitigation or lab work for the public to be DEP-certified (25 Pa. Code Chapter 240).
- Still unsure? Call the PA DEP Radon Hotline at 800-237-2366.
Every firm listed for Lancaster on Radon Roster shows its DEP IDs and a link to the source list.
Questions to ask a mitigator before you sign
- What warranty covers the fan and the work, and is it transferable if I sell?
- Will you seal the sump, cracks or floor-wall joints, and is that in the quote?
- Is a system monitor (manometer or alarm) included so I can see the fan is working?
- Do you carry liability insurance, and will you put the full scope in writing?
- What is your PA DEP certification number, and will you show your DEP photo ID? (Certified people must show it on request under 25 Pa. Code Chapter 240.)
- Will you do diagnostic (sub-slab suction) testing before choosing fan size and suction points?
- Where will the pipe run (inside or outside), and where will the fan and exhaust go?
Frequently asked questions
How do I find a certified radon expert in Lancaster, PA?
Use a firm on PA DEP's certified lists. Radon Roster lists 1 DEP-certified firms based in Lancaster and 8 more in Lancaster County. Confirm any name in the PA DEP Radon Services Directory or call 800-237-2366.
Is radon common in Lancaster?
In PA DEP's test records, 51% of 37,640 basement tests with a Lancaster address were at or above 4 pCi/L (median 4.1 pCi/L). Results vary house to house, so only a test tells you your level.
How much does radon mitigation cost in Lancaster?
We don't have Lancaster-specific price data. A national cost guide puts typical installs at $786-$1,274 (average about $1,028). Get written quotes from certified local mitigators.
Do I need a radon test when buying a home in Pennsylvania?
It isn't required by state law. The seller's disclosure form asks about known radon and past testing, and many buyers order a test during the inspection period. Real estate tests by certified testers follow DEP anti-tampering rules.
How long does a radon test take?
Short-term tests run 2 to 7 days. Long-term tests run more than 90 days. PA DEP suggests confirming a high short-term result before deciding on mitigation.