*The Angi rating for Radon Detection And Reduction companies in Markham, IL 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 Markham, IL 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 April 23, 2026
Serving Markham, IL and surrounding areas
In business since 2012
Credit card accepted
"Completely satisfied. Would certainly recommend them for Radon mitigation work. They worked efficiently, were neat and clean and the price was quite reasonable."
Serving Markham, IL and surrounding areas
In business since 1994
Emergency services offered
Credit card accepted
"He was very good! He discussed with the seller all of what he found in his inspection and was very professional. I will highly recommend him. He's a great guy!"
Serving Markham, IL and surrounding areas
In business since 2015
Small jobs welcome
Credit card accepted
"Technician explained everything about Radon in terms we could totally understand. He was patient, polite, totally knowledgeable and professional."
Serving Markham, IL and surrounding areas
In business since 2008
Free estimates
Credit card accepted
"Very easy to get an appointment on short notice when I had limited time to get a radon test done in the process of purchasing a home. Their price was also slightly lower than an estimate I'd received from another company, and the technician was more thorough about explaining the process than the other company I considered."
Serving Markham, IL and surrounding areas
In business since 1996
Free estimates
Credit card accepted
"I think this guy did a good job. My In-laws thought he was a little fussy, but I'd rather have every little thing noted. I'd rather be able to decide what's important. The report was pretty concise, and the summary was pretty good as well. I recommend him."
Serving Markham, IL and surrounding areas
In business since 1997
Free estimates
Emergency services offered
"COMPLETED WORK IN ONE DAY, AT AN EXTREMELY REASONABLE COST."
Serving Markham, IL and surrounding areas
In business since 2008
Free estimates
Credit card accepted
"Sales representative met with me to understand needs. Sketch and estimate was written up on site and proposal sent via email. Comments to proposal and sketch were picked up quickly. Install crew hoped to do install in one day - but it took two. The install crew was pleasant and worked with me to review on going installation. If you need to hire someone to help keep water away from home and away from basement this is a good company to hire."
+6
Serving Markham, IL and surrounding areas
In business since 2013
Free estimates
Credit card accepted
"This company understands customer service. My call was returned immediately and was able to have someone out to issue a quote within days of contact. We received a quote and had the work done within a week. We have had all the big name companies out to give us quotes and High Tech Waterproofing provided a better option. Their quote was more cost effective, involved no hazardous fumes, no stud removal (that others had requested), and still included a warranty. I am thankful thankful that I ran across their review on Angie's List. We've yet to have spring rains to test the job done, but I feel very comfortable with our choice. I would recommend this company to any one.
"
+1
Serving Markham, IL and surrounding areas
In business since 2024
Free estimates
Credit card accepted
Kyle Bak is the leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!\n
Serving Markham, IL and surrounding areas
In business since 2010
Free estimates
Emergency services offered
"I wanted to share my experience of the level of service I received from Chicago Crawlspace & Basement Pros I had about 1-2 inches of standing water in my basement after frivolous attempts at vacuuming the mess up frustrated I called company "P" to come out to fix my foundation crack to find out they wanted close to $600 for the job and wouldn't be able to come out for six weeks!!! then I called Chicago Crawlspace & Basement Pros and Andy was able to fix my leaking foundation crack the SAME DAY!!!! and Saved me Hundreds of dollars all while being Professional and explaining every step of the process putting me at ease I can't thank Andy enough and Chicago Crawlspace & Basement Pros you guys really make everyone else look like amateurs
Thank You Again
Thomas Chun
"
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 Chicago, IL, depends mostly on the type of system being installed. Use this guide to learn about your options.
The cost of a radon mitigation system depends mostly on the type of system being installed. Use this guide to learn about your options.
Find out what impacts radon testing costs, including average prices for DIY kits and professional services, so you can protect your home and budget confidently.
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You need to protect your home from radon, but what does a radon mitigation system look like? Check out this radon mitigation system diagram to learn how it works.
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