# Radon Roster

> Radon Roster is a free directory of Pennsylvania DEP-certified radon testing, mitigation and laboratory firms, with county and city radon test data from PA DEP public records. Draft preview, not yet launched (pages are noindex).

Radon Roster is for Pennsylvania homeowners, buyers, sellers, landlords and real estate agents who need a PA DEP-certified radon tester or mitigation contractor, and for radon professionals who want to claim or correct their free listing. Listings come from PA DEP certification lists dated 10/01/2026; radon statistics come from PA DEP's public Radon Test Results dataset. A listing is not an endorsement. Every page has a Markdown version: replace the trailing slash with `.md` (home: https://radonroster.com/index.md).

## Directory
- [All 67 Pennsylvania counties](https://radonroster.com/pa/counties/): certified firms by county
- [Pennsylvania cities](https://radonroster.com/pa/cities/): local radon test data and nearby firms
- [Radon levels by county](https://radonroster.com/pa/radon-levels-by-county/): PA DEP test statistics table
- [Out-of-state firms certified in PA](https://radonroster.com/pa/out-of-state/)

## Guides
- [All radon guides](https://radonroster.com/guides/)
- [What is radon?](https://radonroster.com/what-is-radon/)
- [Radon testing vs mitigation](https://radonroster.com/testing-vs-mitigation/)
- [Radon mitigation cost](https://radonroster.com/radon-mitigation-cost/): typical national ranges and estimate tool
- [PA real estate radon disclosure](https://radonroster.com/pa/real-estate-radon-disclosure/)
- [Get free quotes](https://radonroster.com/get-quotes/): placeholder form, not yet functional

## For contractors
- [Advertising and pricing](https://radonroster.com/for-contractors/): draft featured-listing plans
- [Claim, correct or remove a listing](https://radonroster.com/claim-listing/): placeholder form
- [How we make money](https://radonroster.com/how-we-make-money/)

## About
- [About Radon Roster](https://radonroster.com/about/)
- [About our data](https://radonroster.com/about-our-data/)
- [Contact](https://radonroster.com/contact/)
- [Privacy policy (draft)](https://radonroster.com/privacy/)
- [Sitemap](https://radonroster.com/sitemap.xml)

## Optional
- [llms-full.txt](https://radonroster.com/llms-full.txt): full list of county, city and guide pages