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Verified Reviews for Radon Detection And Reduction pros in San Ramon, CA

*The Angi rating for Radon Detection And Reduction companies in San Ramon, CA 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 San Ramon, CA 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 October 06, 2025

Find Radon detection and reduction specialists in San Ramon

Avatar for Fire & Water Damage Recovery
Fire & Water Damage Recovery
4.7(
69
)

Serving San Ramon, CA and surrounding areas

In business since 1997

Free estimates

Emergency services offered

"The experience with Justin at Fire & Water Damage Recovery was excellent. They were referred by the plumbing company that serviced my sump pump. We still got 3 estimate, Justin's estimate was in the middle but I felt good with Justin based on our phone conversation and the referral so we went with this company. Justin did tell me that he might have estimated on the high side because he does not like to surprise the homeowners. What a surprise when I go the final invoice. The final invoice came in much lower and was very close or lower than the lowest estimate I got. Justin and his team also took pictures of how the place was before and after for me to see. They even took pictures of the pathway that they took to get to the crawl space to assure me that they kept the place clean when they got in and out. I was very satisified with Justin and his company."
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+27

Recommended by88%of homeowners
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Avatar for S & Y Corp
S & Y Corp
4.6(
18
)

Serving San Ramon, CA and surrounding areas

In business since 1991

Free estimates

Emergency services offered

"Everything was fine.  I had no complaints.  I was just basically getting quotes from a few companies.  They did the job they were supposed to do while giving me a quote. "
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Recommended by93%of homeowners
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Radon Detection and Reduction questions, 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, air purifiers are not an effective way to reduce or remove radon. Radon is a radioactive, inert gas that cannot be filtered by standard air purifiers, which are designed to capture particulates like dust and mold. While an air purifier can improve indoor air quality by removing other pollutants, it should not be relied upon for radon. The only effective solution for high radon levels is a dedicated radon mitigation system.

Radon is a cancer-causing radioactive gas that poses serious health risks, infiltrating homes through foundation cracks and unnoticed spaces.

The cost to replace a radon fan ranges from $300 to $600 for the fan itself, with installation adding an additional $200 to $500. Overall, the total cost for replacement can range from $500 to $1,100, depending on factors such as the fan model, home size, and local labor rates. If the fan is part of a larger radon mitigation system, the price may be higher.

Abatement includes sealing entry points and venting with systems that reduce radon levels below recommended EPA limits. It is handled by certified professionals.

The San Ramon, CA 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.

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