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Top-Rated Radon detection and reduction specialists in Friendswood - Updated Nov 2026

Avatar for IAQ Analytical
IAQ Analytical
4.7(
49
)
Radon Gas - AbatementRadon Gas - Testing

Serving Friendswood, TX and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Indoor quality testing. Was getting sick with allergies and he found mold. He explained everything in detail and was very professional, honest, punctual. He has solved are problems and we're glad we found him."
Certification Seal from ACAC
Response time11 hrs
Response rate90%
2 neighbors recently requested a quote
Avatar for Affordable Radon Services
Affordable Radon Services
4.7(
351
)
Radon Gas - Abatement

Serving Friendswood, TX and surrounding areas

In business since 2011

Free estimates

Warranties offered

"They were prompt, efficient and courteous. They called to let me know they were on their way and cleaned up everything when they were done. They were supposed to explain something to me about some monitor after the installation, but they forgot. They did walk through how to do the radon test in another week. they also gave me a senior discount, which was definitely appreciated. Otherwise, their pricing was pretty much in the range with the other estimates I received."
Radon Mitigation System
Radon Mitigation System
Radon Mitigation System
Radon Mitigation System
3120 E Agritopia

+1

Response time1 day
Response rate87%
Recommended by96%of homeowners
Avatar for Clear Environmental Services, LLC
Clear Environmental Services, LLC
4.2(
15
)
Radon Gas - AbatementRadon Gas - Testing

Serving Friendswood, TX and surrounding areas

In business since 2013

Free estimates

Warranties offered

"Zach Shipley of Clear Environmental took on the task of removing my extremely large inground swimming pool, filling the cavity and resodding the lawn. He and his crew were very professional in all aspects and he was very "hands-on" throughout the entire process. He was on-site for delivereies and to oversee the work and to keep me apprised of everything that was being done and how the job was progressing. It was a monumental job and he made it as painless as possible at a very competitive price. I would highly recommend Clear Environmental to anyone with a home or commercial project."
Abatement
Abatement
Abatement
Abatement
Abatement

+7

Response time1 day
Recommended by91%of homeowners
Radon Detection and Reduction FAQs, answered by experts

The cost for a radon mitigation system typically ranges from $800 to $1,500, with an average around $1,000. The final price depends on several factors, including the size of your home, the severity of the radon issue, and the type of system required. Your home's foundation type also significantly impacts the cost. For example, sealing and ventilating an unfinished basement might cost around $4,600, while encapsulating a crawl space without a foundation slab can range from $1,500 to $15,000.

No level of radon is technically safe, but since it is naturally present everywhere, it is impossible to avoid entirely. 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 action to reduce radon levels if your home's test results are between 2 and 4 pCi/L or higher.

Ideally, no one will live in a house with elevated radon levels, as prolonged exposure increases the risk of serious health issues like lung cancer. However, homes with radon can be made safe through mitigation systems, such as active soil depressurization. Testing for radon regularly and addressing high levels helps ensure a safe living environment.

You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.

Testing every 2-5 years or upon adjusting occupancy or structural changes maintains safe environments.

The Friendswood, TX 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.