*The Angi rating for Radon Detection And Reduction companies in Keystone, SD 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 Keystone, SD 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 May 13, 2026
Serving Keystone, SD and surrounding areas
Approved
In business since 2020
Free estimates
Emergency services offered
"Anthony was very polite and knowledgeable. The hole job was done in two days. Radon readings went from 14 to 34 down to 0.4, we are very happy ."
+13
Serving Keystone, SD and surrounding areas
Approved
In business since 2013
Free estimates
Emergency services offered
"He's extremely knowledgeable and practical, very down to earth. I think he could charge more, his pricing is very good. I would recommend him to anyone and I have already done so."
Serving Keystone, SD and surrounding areas
Approved
In business since 1992
Free estimates
Warranties offered
"They were very quick and seems like quality work. Guys were super friendly, answered all my questions and were very patient with my 3 y/o who constantly wanted to talk to them as they were carrying buckets in and out. Pretty spendy but i think drain tiling is expensive regardless."
Serving Keystone, SD and surrounding areas
Approved
In business since 2022
Free estimates
Black Hills Radon is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.
Serving Keystone, SD and surrounding areas
In business since 2000
Free estimates
"Great team! Courteous, knowledgeable and responsive, what more can a homeowner ask? As it turned out, our home tested below the limits for mitigation. Had the work been required, we were ready to hire."
Serving Keystone, SD and surrounding areas
In business since 2010
Top rated inspector in the Black Hills area
Serving Keystone, SD and surrounding areas
In business since 2022
Free estimates
Credit card accepted
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today! \n \n
From average costs to expert advice, get all the answers you need to get your job done.
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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