Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in Clarkston, WA

Q: Why is radon detection important for residential properties?

• <div><p>Radon detection is crucial as prolonged exposure to radon gas, a leading cause of lung cancer, poses significant health risks in residential environments.</p></div>

Q: What are the risks of radon?

• <div><p>Radon is the number one non-smoking cause of lung cancer in the United States, but it can cause some other concerning side effects in the meantime. If you have a raspy voice, chest pains, trouble breathing, difficulty swallowing, or any of the above, don&rsquo;t hesitate to perform radon testing and install a mitigation system as soon as possible.</p></div>

Q: Is radon a serious problem?

• <div><p>Radon is present almost everywhere but, like sunlight, the concentration levels and how often you are exposed to it have a large part to play in just how dangerous it is. There are levels of radon that are acceptable inside a house, but above a certain limit, radon becomes a serious radioactive hazard that is a known cause of lung cancer. In fact, radon exposure is the number two leading cause of lung cancer (after smoking).</p></div>

Q: What is the biggest source of radon?

• <div><p>The soil beneath your house is most likely what&rsquo;s causing an increased level of radon. This is because soil holds radioactivity for a long time and it&rsquo;s also what most buildings are built on. Another common source of radon is water from a source that hasn&rsquo;t been through periodic radon tests, such as well water. Over time, the radon from the soil can inhabit other parts of your house like the foundation or plumbing.</p></div>

Q: What is considered a safe or dangerous level of radon?

• <div><p>No level of radon is technically safe, but since it is present everywhere, complete avoidance is impossible. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking preventative measures if your home's radon levels are between 2 and 4 pCi/L or higher.</p></div>

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Verified Reviews for Radon Detection And Reduction pros in Clarkston, WA

*The Angi rating for Radon Detection And Reduction companies in Clarkston, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

*The HomeAdvisor rating for Radon Detection And Reduction companies in Clarkston, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Radon Detection And Reduction needs.

Last update on April 16, 2026

Reviewed in April 2026
Service was above and beyond expectation! Kevin and Mark were professional and took time to explain in detail my HVAC system and the best way to operate and maintain the system. At no cost to me, they are coming back to optimize my system next week as well Mike's Mechanical is the best!
Mike's Mechanical
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Reviewed in July 2024
Removed and replaced deck. Installed egress window. Removed and replaced all roof shingles. Installed rain gutter. Removed and replaced part of soffit. All work was done in a professional and timely manner. Very meticulous in workmanship. Will definitely use this company again.
Jon Schlee Construction
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Reviewed in February 2024
Big D tree and stumps came and took down my trees fast and efficiently.
Big D Trees and Stumps LLC
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Reviewed in September 2023
Ryan and Vern were very personable. They made good suggestions to the project. They were on time and dependable and the results were excellent. The price was reasonable and fair.
Nelsen Construction Services, LLC
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Reviewed in April 2023
I had a tree that was pressing on the neighbors fence and wanted to have it taken down. E & K Services LLC came out looked at the tree and gave me an estimate. I had other tree Services come.and estimate the tree project as well. The tree was not accessible by bucket to remove, E & K came up...
E&K Services
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Reviewed in April 2023
Levi and his team were efficient and got the job done. I loved how knowledgeable they are and how they took every care to make sure my trees were cut for their health and at the same time considered what I wanted. We wonâ t be seeing anyone else, and we highly recommend this company.
Ewing Grounds Keeping
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Reviewed in March 2023
They were careful and meticulous when removing branches. They seemed efficient, and they did a good job with cleanup.
Hells Canyon Tree Surgeon, LLC
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Reviewed in February 2023
They did a great job. Cleaned gutters one time and had them do my leaves which was a big job. They are honest and and reliable. Good people. Thanks
I Got Your Back Hauling Moving Handyman Services
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Reviewed in July 2022
They immediately worked on the trouble areas , Fixed them and were out of there within an hour. I always feared electrical fires and now I am at ease.
Rock Solid Electric LLC
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Reviewed in October 2021
Technician sprayed outside of house. Fast efficient. Let me know when they got there and ensured I knew when they were done. This was my 3rd time using them and definitely not the last. Highly recommend.
NORTHERN STATES PEST & WEED
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Find Radon detection and reduction specialists in Clarkston

Inland Inspections And Testing, LLC

5.0(

)

Serving Clarkston, WA and surrounding areas

In business since 2017

Free estimates

Credit card accepted

"Kevin was personable and took the time to explain the report to me. He was very helpful and patient with me."

Response time3 hrs

Recommended by80%of homeowners

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Advanced Radon Technologies

4.5(

)

Serving Clarkston, WA and surrounding areas

In business since 1971

Free estimates

Warranties offered

"Dave first off cares about his customers health and well being. He is interested in solving your Radon issue and making sure the work is high quality. He pulls proper permitting for electrical and his support team is awesome. The other Radon company that was used did not meet specific standards in doing Radon migitgation work. Do your homework and read reviews before hiring a Radon company and check certifications: https://nrpp.info/. Dave takes his profession seriously and has a tremendous background in this work. I highly recommend Advanced Radon Technologies."

+11

Recommended by100%of homeowners

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Environmental Technology Consultants

4.9(

)

Serving Clarkston, WA and surrounding areas

In business since 1997

Free estimates

"They were very honest & told us we didn't have black mold and needed a dehumidifier. I would very certainly recommend them for their honesty"

Recommended by100%of homeowners

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K&K Consultants Home Inspections & More

4.9(

)

Serving Clarkston, WA and surrounding areas

In business since 1999

Free estimates

Offers commercial services

"Same day appointment, very knowledgeable and thorough. Cares about costumers and takes the time to explain the inspection results and answer questions with honesty. I can can assure that this company will not rip you off. I highly recommend!!!!"

Response time7 hrs

Recommended by100%of homeowners

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SWAT Environmental, Inc.

1.8(

)

Serving Clarkston, WA and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"The work was fine, I haven't retested yet."

Recommended by50%of homeowners

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Affordable Home Inspection, LLC

New to Angi

Serving Clarkston, WA and surrounding areas

In business since 2016

Free estimates

Credit card accepted

We pride our company on reliability, integrity and quality work. When Affordable Home Inspection, LLC is hired, we make it a point to provide the highest level of customer service. We work with both residential and commercial clients, and apply the same attention to detail regardless of project size or complexity. We look forward to earning your business! Thank you!

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Radon Detection and Reduction questions, answered by experts

Radon detection is crucial as prolonged exposure to radon gas, a leading cause of lung cancer, poses significant health risks in residential environments.

Radon is the number one non-smoking cause of lung cancer in the United States, but it can cause some other concerning side effects in the meantime. If you have a raspy voice, chest pains, trouble breathing, difficulty swallowing, or any of the above, don’t hesitate to perform radon testing and install a mitigation system as soon as possible.

Radon is present almost everywhere but, like sunlight, the concentration levels and how often you are exposed to it have a large part to play in just how dangerous it is. There are levels of radon that are acceptable inside a house, but above a certain limit, radon becomes a serious radioactive hazard that is a known cause of lung cancer. In fact, radon exposure is the number two leading cause of lung cancer (after smoking).

The soil beneath your house is most likely what’s causing an increased level of radon. This is because soil holds radioactivity for a long time and it’s also what most buildings are built on. Another common source of radon is water from a source that hasn’t been through periodic radon tests, such as well water. Over time, the radon from the soil can inhabit other parts of your house like the foundation or plumbing.

No level of radon is technically safe, but since it is present everywhere, complete avoidance is impossible. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking preventative measures if your home's radon levels are between 2 and 4 pCi/L or higher.

The Clarkston, WA homeowners’ guide to radon detection and reduction services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles

Mitchell Grant
•
Mar 18, 2026Mar 18, 2026
How Much Does a Radon Mitigation System Cost? [2026 Data]
The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
Alison Kasch
•
Apr 6, 2026Apr 6, 2026
How Much Does Radon Remediation Cost? [2026 Data]
Get clear answers on how much radon remediation costs, including average prices, key cost factors, and tips to save money on your home’s radon mitigation.
Angi
•
Mar 18, 2026Mar 18, 2026
How Much Does Radon Testing Cost? [2026 Data]
Find out what impacts radon testing costs, including average prices for DIY kits and professional services, so you can protect your home and budget confidently.
Amy Freeman
•
Apr 5, 2026Apr 5, 2026
Who Installs Radon Mitigation Systems?
Radon is a gas that you can't see or smell and is harmful to your health. If your home has radon, you need to know who installs radon mitigation systems.
Jacqueline DeMarco
•
May 2, 2026May 2, 2026
What Is Radon and How Does It Get In Your Home?
What is radon gas? Find out what this radioactive gas is, why it is dangerous, how it gets in your home, and how to mitigate it.
Jacqueline DeMarco
•
Apr 10, 2026Apr 10, 2026
What Is Radon Testing?
What is radon testing? Radon testing measures the presence and concentration of radon gas within indoor environments. Read on to learn more.