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Top Rated Radon Inspectors


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Over 1,544 reviews for
Saint Louis Radon Inspectors from people just like you.

"I called and asked about installing a mitigation system, as the radon levels were 4.1 pl per million (limit is 4.0). inquired about features" of the basement. He recommended sealing the covers of the two sump pumps in the basement, and sealing the drainage channels and retesting prior to purchasing a mitigation system. He also provided information about how to obtain a free test from the state.

-Leah B.

"My home was for sale and narrowly failed the radon test requested by the buyer. was available to promptly come to my home and install a" mitigation system that was guaranteed to reduce radon to acceptable levels. Although I paid the bill, they worked with the buyer to design and install the system in a way that would be the least obtrusive. The price they charged for their services was reasonable and they were very flexible in working with me and the buyer.

-Colin T.

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Local Articles in Saint Louis

Radon Detection

Radon is a colorless, odorless gas that occurs as a decay byproduct of uranium and thorium. Radon forms naturally in the environment, and low levels can be detected in soil, rock and ground water. Homeowners that inhale radon are at risk of lung cancer and even death.

radon tester attached to a gutter downspout.

Radon is an invisible gas and every home is susceptible to it. Mitigation systems can significantly decrease the carcinogenic risks posed by radon.

man in abatement suit removes lead paint

Every home contains some hidden health risks. To better tackle the dangers lurking inside or around your home, become familiar with these terms.

sponge on counter with cleaning products

Seven factors or hazards exist in your home that could be causing you to feel ill.

Any home with high radon gas levels should be equipped with a mitigation system that will alleviate the problem. Test your home for radon and have an appropriate mitigation system and fan installed.

Radon Testing reviews in Saint Louis


We called because we thought the fan had stopped working and to look into the issue of water dripping from the pipes in our garage during the winter. It turns out the fan still worked as the power was turned off. It was good to know that they were honest and stated the fan did not need to be replaced at this time. They determined the reason water dripped ...More from the pipes in the winter was due to having the wrong flange on the roof. They did a good job of fixing it. I can't wait to see if working this winter so I don't have to scrape the ice off my windshield on my car that is in a garage. Note: they are not the same company who put the system in place.
- Michael F.

Great! Fantastic service. They had to come out an initial time, then returned another time. Very helpful, professional, and efficient.
- Meaghan L.

All went well. They installed the mitigation system to avoid as much basement use as possible and the system isn't obvious from the exterior of the house. All was done right on time and with little disruption and all was cleaned up afterwards. I had to call them back to rehook up the garage door opener, but they were a very short distance away ...More and it was no big problem. They explained the entire process and left literature that would be a good reference in case of further questions.
- Aline K.

was the person who came out to start the test and then to collect the machine two days later. She was very professional and we received a thorough report following the test. No problems - no attempts to upsell - highly recommend.
- Jason E.

was very helpful when I was in a difficult situation resolving the radon issue. He fit me into his schedule early, and went out of his way to help get the situation resolved quickly so I was able to sell my condo. The $900 was for the mitigation system only the cost of the tarping was not included in the above cost of service ...More as this was a different company.

- Kari A.

Working with from Pyramid was great, and very reasonable! I was buying a two-family rental property near St. Hills and was nervous because I wasn't sure if certain things were problems or not. did an amazingly through inspection (almost 3 hours!), and was really patient and ...More funny as he explained to me what he was looking for, and helped me understand what was and wasn't a big deal.
For example I was concerned about moisture in the basement, e.g. if the foundation was cracked etc. identified that the outside sidewalk was slanting into the house, and was probably the source. Which was a whole lot cheaper of a fix than the foundation! He also found things with the water heater and stack which I never would have spotted! And he went everywhere, like the attic, unlike other inspectors I've worked with.
All the issues were documented in his super-thorough report and in my inbox within a day - and I actually used what he found to negotiate getting several thousand dollars off the final price for repairs!
The termite and sewer inspectors did a good job, which he coordinated, which made it easy for me.
So overall it was money well spent, and I will definitely use again, especially when I need to buy a house for myself.
- Jim T.

Mr. was great to work with. Not only he was knowledgeable, he was thorough in his inspection and also took extra time to explain different nuances of the house. His inspection report was clear, concise, and full of important pictures, which were invaluable for our negotiations with the seller's agent. He was friendly ...More and professional. He also followed up with us a week after the inspection to make sure we are satisfied with the work. I would highly recommend Mr. - especially if you're a first time home buyers!
- Albert L.

The radon mitigation system in our house had been installed by a different company called "Eagle Eye" for the previous owners as part of the sales contract. There were problems with Eagle Eye's work: their exhaust pipe ended two feet below the bedroom window, so we called them to extend it, and they proceeded to extend it to just below ...More our 3rd floor window. Clearly Eagle Eye was not familiar with EPA regulations, and it eventually became impossible to get in touch with them; they may now be out of business (deservedly). So I consulted Angie's List to find a reputable radon mitigation company and decided to try based on the glowing reviews.
My experience with from beginning to end was exemplary. assured me that it was possible for them to inspect and adjust/repair the work of the previous company, found an early date to schedule it, and gave me a reasonable quote. On the day scheduled, and arrived to do the work. I pointed out the issues that I had spotted. inspected the system and identified other problems that I would not have had the experience to see. We discussed what needed to be done, and the two men did it efficiently and neatly. They strengthened the whole exhaust structure which had been prone to sagging; they eliminated an area where moisture could back up and freeze; they rerouted the exhaust pipe to the regulation 10 feet away from our attic window; they added a squirrel to the end of the pipe; they replaced plastic supports with metal ones; they sealed a crack near the fan where air was being sucked into the system and thereby increased its effectiveness. When finished, walked me through and answered my questions about radon mitigation. I was very happy with the transaction. The following day called me for an unprompted follow-up. My experience with this company was 100% positive and I would not hesitate to use them again or recommend them to others.
- Jennifer L.

Radon Inspectors in Saint Louis

Companies below are listed in alphabetical order. To view top rated service providers along with reviews and ratings, Join Angie's List Now!

7 Oaks Home Inspection LLC

7827 Hwy N
O Fallon


PO Box 190632
Saint Louis

ACE Home Inspection

PO Box 53
Saint Peters

Action Home Inspection STL

1209 hickory hollow lane
O Fallon

Advanced Radon Control

9051 Watson Rd Ste 133
Saint Louis

Aegis Radon Svc

2705 S Kingshighway Blvd
Saint Louis

American Environmental Laboratories LLC

3441 Morgan Ford Rd
Saint Louis


Saint Louis

Criterium - Hardy/McMahon Engineers

228 Spring Oaks Drive

Exterior Building Solutions

8503 Manchester Rd
Saint Louis

G & P Concrete Inc

10 Avocado Tree Cir
Saint Peters

Gateway Home Inspection Services

5356 Southview Hills Ct
St Louis

Gateway Radon

1429 Hwy C
St. Charles

GENNARO General Contracting

Saint Louis


Saint Louis

Hot Shotz Mobile Power Wash

P.O. Box 722
Saint Peters

HouseMaster Home Inspections

4020 Green Mount Crossing Dr

Housewarming Home Inspections

629 Brookhaven Ct
Saint Louis

Inspect MO



Saint Louis

Lafayette Construction

3000 S. Jefferson
Saint Louis


Saint Louis

Marchand Construction Inc

9250 cherry lane

Metro Radon Control of St. Louis, LLC

10310 Dorenshire Ct.
St. Louis

Missouri Pest Control

6728 Armistead Ct

Moore Home Inspection Services

606 North & South Rd.
Saint Louis

Pillar To Post

11424 Gravois Rd
Saint Louis

Pillar To Post Professional Home Inspection

814 S. Sappington Rd.
St. Louis

Quality Home Inspection Services

7601 Alicia Ave
St. Louis

Quality Home Services LLC

5819 Willow Springs Rd
House Springs

Radon Control Services

7301 Watson Rd
Saint Louis


9850 Kimker Ln
Saint Louis

Reliable Radon LLC

7150 Hazelwood Lane
Saint Louis

S & B Best Pest

3000 Peal Dr
Saint Louis

St Louis Radon

640 Cepi Dr.

STL Home Inspection Services

3002 S. Jefferson Ave
Saint Louis

Two Nice Guys Termite & Pest Control

PO Box 515026
Saint Louis


1679 Springdale Blvd


Saint Charles

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