Radon testing and mitigation in Washington County, OR

8 certified radon testers and mitigation contractors in Washington County, OR. Mitigation contractors are listed first.

8 certified prosUpdated October 2026Source: state certification lists and the NRPP directory

Pros in this state come from the NRPP national certification directory (checked Oct 28, 2026). Get Radon Quotes is independent and not affiliated with NRPP. Some states also require a state license, so confirm with your state radon office before you hire. Your state radon office.

8 certified pros near Washington County, OR

Alpha Environmental Services, Inc.

Beaverton, OR

Certified mitigationCertified testing

Get a quote (503) 292-5346 Directions

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Oregon Healthy Homes LLC

Aloha, OR

Certified mitigation

Get a quote (971) 570-9097 Directions

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EAECo., LLC

Sherwood, OR

Certified testing

Get a quote (503) 980-4148 Directions

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Environmental Works, LLC

Beaverton, OR

Certified testing

Get a quote (520) 312-2447 Directions

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MCC Inspections

Beaverton, OR

Certified testing

Get a quote (503) 851-4111 Directions

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Northwest Inspection Services (DBA National Property Inspections

Tigard, OR

Certified testing

Get a quote (503) 757-4442 Directions

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Performance Insulation & Energy Services

Sherwood, OR

Certified testing

Get a quote (800) 598-8001 Directions

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Room by Room Home Inspection Services LLC

Beaverton, OR

Certified testing

Get a quote (971) 393-7739 Directions

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Get free quotes from up to 3 certified radon pros near Washington County, OR

Tell us what you need and where. We send your request to up to 3 certified pros near you who offer that service, and they contact you directly.

What do you need?Not sure? Start with a test. Most homes only need a fix if the result is 4 pCi/L or higher.ZIP codeYour namePhoneContractors usually call to schedule.Email (optional)Anything else they should know? (optional)For example: closing date, basement type, or your result.FoundationYour radon result (if you have one)Situation

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Radon guides

Mitigation cost How to test Results explained Buying or selling

Common questions

Who installs radon systems near Washington County, OR?

The certified mitigation contractors listed above serve Washington County, OR and the surrounding county. Get two or three quotes.

How much does radon mitigation cost near Washington County, OR?

Typical residential systems cost in the high hundreds to low thousands of dollars depending on the foundation and how the pipe is routed. See our mitigation cost guide.