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*The Angi rating for Radon Detection And Reduction companies in Apple Valley, 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 Apple Valley, 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 March 18, 2026

Find Radon detection and reduction specialists in Apple Valley

Avatar for Roof Rx
Roof Rx
4.2(
1,190
)

Serving Apple Valley, CA and surrounding areas

In business since 1998

Free estimates

Emergency services offered

"not that great. basically paid $99 to get an estimate. included cleaning roof and minimal repairs. took a while to get appointment, and then when they came, they didn't even do the work! gave a really big estimate and then re-seheduled to have someone else do the work. they wouldn't totally replace the roof, gave different estimates to repair, I went with a different company to do a full roof rplacement."
Additional Photos
Roof Leak Repair - Step 1
Roof Leak Repair - Step 2
Roof Leak Repair
Recommended by81%of homeowners
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Avatar for Simplistic Water Restoration
Simplistic Water Restoration
5.0(
5
)

Serving Apple Valley, CA and surrounding areas

Free estimates

Emergency services offered

Credit card accepted

"They were very responsive, very quiet, very clean. They protected the house with sheeting and they took care of the paper works and testing and they make sure that it was tested and everything was up to code. They also help me to find out people to rebuild the kitchen."
Mold remediation
Mold inspection & remediation
Mold remediation
Mold remediation
Mold remediation

+39

Recommended by100%of homeowners
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Radon Detection and Reduction questions, answered by experts

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.

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.

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

Use a radon test kit or hire professionals to conduct a detailed assessment of radon levels in your home.

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.

The Apple Valley, 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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