*The Angi rating for Radon Detection And Reduction companies in San Dimas, 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 Dimas, 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 22, 2026
Serving San Dimas, CA and surrounding areas
Approved
In business since 2021
Free estimates
Credit card accepted
"Absolutely amazing experience. My home radon levels were averaging 5.0 pCi/L. Two days after Edward and his team finished the mitigation job the levels went down to 0.3. Incredible result. I can’t be happier."
Serving San Dimas, CA and surrounding areas
Approved
In business since 2006
Free estimates
Emergency services offered
"They're very reliable and dependable. They're also punctual!"
Serving San Dimas, CA and surrounding areas
Approved
In business since 2023
Free estimates
Emergency services offered
"The work went great. They were very fast and very professional. They did an excellent job on something we've needed done for years."
+31
Serving San Dimas, 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."
Serving San Dimas, 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."
+39
Serving San Dimas, CA and surrounding areas
In business since 1984
Free estimates
Emergency services offered
"Very Good. No problems. I suggest that if your looking to remodel to use Unique."
Serving San Dimas, CA and surrounding areas
In business since 2022
Free estimates
Credit card accepted
With several years experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. We welcome your questions and thank you for your interest. Call today!
From average costs to expert advice, get all the answers you need to get your job done.
The cost of a radon mitigation system in Los Angeles, CA, depends mostly on the type of system being installed. Use this guide to learn about your options.
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The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
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Can a homeowner install a radon mitigation system? While some parts of the project are fine for DIY, you should leave the meat of the task to a licensed professional.
Want to learn how to master DIY radon mitigation? We have a step-by-step guide on how to complete this challenging project on your own.
