Radon Mitigation in North York, PA
North York's ZIP code, 17404, has 6,638 basement radon tests on file with DEP, and 55.1% came back at or above 4.0 pCi/L.
North York Radon Test Results
North York shares ZIP 17404 with West York, so the DEP figures here describe the whole ZIP rather than the borough alone. The ZIP's median basement test is 4.6 pCi/L, below the York County median of 4.9, and its share at or above 4.0 pCi/L (55.1%) is below the figure for all York city ZIP codes together (57.5%). A below-average median still leaves 3,655 tests in the ZIP at or above the action level, so only a test of your own home tells you where it falls.
DEP files tests with a York mailing address by ZIP code, not by neighborhood, so these figures cover all of ZIP 17404, including North York and the streets around it. These are tests reported to DEP, not a random sample of homes.
| Area | Basement tests | Tests ≥ 4.0 | % ≥ 4.0 | Median (pCi/L) |
|---|---|---|---|---|
| ZIP 17404 (North York) | 6,638 | 3,655 | 55.1% | 4.6 |
| All York city ZIPs | 28,382 | 16,319 | 57.5% | n/a |
| York County | 82,215 | 46,330 | 56.4% | 4.9 |
Source: Pennsylvania DEP, Radon Test Results / Radon Mitigation System records (data.pa.gov). Retrieved October 21, 2026. Tests reported to DEP by certified labs and testers, not a random sample of homes.
What Radon Mitigation Costs in North York
DEP mitigation records are not broken out by ZIP code, so the best local guide is the county figure. Across York County, the median cost of a radon mitigation system was $1,150, based on 749 systems with a post-mitigation test from 2024 to 2026.
By system type, a standard sub-slab system had a county median cost of $1,175 (599 systems), and activating an existing passive pipe $775 (141 systems). 50.9% of county jobs cost between $935 and $1,320. We confirm your price in writing after a free inspection.
Basement vs First Floor
Radon is usually highest at the lowest level of a house. In York County, basement tests have a median of 4.9 pCi/L and first-floor tests 2.1 pCi/L, with 33.4% of first-floor tests at or above 4.0. ZIP 17404's basement median of 4.6 pCi/L is at or below the county's, but a low first-floor reading does not clear the basement. Test the lowest level you use.
| York County test level | Tests | Median (pCi/L) | % ≥ 4.0 |
|---|---|---|---|
| Basement | 82,215 | 4.9 | 56.4% |
| First floor | 10,703 | 2.1 | 33.4% |
Source: Pennsylvania DEP, Radon Test Results / Radon Mitigation System records (data.pa.gov). Retrieved October 21, 2026. Tests reported to DEP by certified labs and testers, not a random sample of homes.
How a Radon System Works in North York Homes
Most systems in York County are active sub-slab depressurization. Our crew seals the sump and major cracks, cuts a suction point through the basement floor, and runs a sealed pipe to a fan mounted outside the living space. The fan keeps the soil under the house at lower pressure than the rooms above, so radon is drawn into the pipe and vented above the roofline instead of seeping indoors. A gauge on the pipe shows the fan is pulling. Across the county, the median reading was 12.0 pCi/L before mitigation and 1.0 pCi/L after, and 97.5% of systems tested below 4.0 pCi/L afterward. In North York, every system we install gets a follow-up test so you see your own before and after.
Check Any Radon Mitigator's Certification in North York
Pennsylvania requires anyone who tests for radon or installs a mitigation system for hire to be certified by the Department of Environmental Protection. We hold that certification, and we welcome the same checks. Before you hire anyone in North York, including us:
- Ask for the DEP certification number of the person and the firm, then check it in the PA DEP Radon Services Directory (opens in a new tab), which DEP updates monthly by county.
- Get the scope and price in writing.
- Ask for proof of liability insurance and a Pennsylvania home improvement contractor registration.
- Ask for a follow-up test after the fan runs.
How We Handle Radon Mitigation in North York
We are a PA DEP-certified radon mitigation firm. Our own crew does every job.
- 1 Step 1
You send your result
Your ZIP code and radon result, if you have one. The estimate is free.
- 2 Step 2
We inspect and quote
We check the foundation and put the design and price in writing.
- 3 Step 3
Our crew installs
Our certified crew seals the slab, runs the pipe and mounts the fan.
- 4 Step 4
We retest
A follow-up test puts your new level on paper.
Radon Services We Provide in North York
Our PA DEP-certified crew tests, installs, repairs and services radon systems in North York homes. Pick a service to see the work and the price range.
Radon FAQs for North York
3,655 of 6,638 basement tests in ZIP 17404 (55.1%) were at or above 4.0 pCi/L.
Slightly. ZIP 17404's share at or above 4.0 pCi/L is 55.1%, against 57.5% across all York city ZIP codes, and its median is 4.6 pCi/L.
There is no ZIP-level cost data. The York County median was $1,150 from 2024 to 2026: $1,175 for a standard sub-slab system and $775 to activate a passive pipe.
No. They cover all tests DEP files under ZIP 17404, which also includes West York. These are tests reported to DEP, not a random sample of homes.
Sources
- Pennsylvania DEP, Radon Test Results, September 1986 to Current (data.pa.gov)
- Pennsylvania DEP, Radon Mitigation System Year, 1987 to Current (data.pa.gov)
- U.S. EPA, Health Risk of Radon
- U.S. EPA, Consumer's Guide to Radon Reduction
- Pennsylvania Code, 25 Pa. Code Chapter 240, Radon Certification
- Pennsylvania DEP, Radon Services Directory (certified testers, mitigators and labs by county)
Data retrieved October 21, 2026. Links, dates and methods for every source are on our sources and resources page.