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Q: What is the biggest source of radon?

• <div><p>The soil beneath your house is most likely what&rsquo;s causing an increased level of radon. This is because soil holds radioactivity for a long time and it&rsquo;s also what most buildings are built on. Another common source of radon is water from a source that hasn&rsquo;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.</p></div>

Q: Can you remediate radon yourself?

• <div><p>There are steps you can take as a homeowner to remediate radon yourself. While a radon reduction professional can make the biggest impact in your home, you can make efforts to improve radon levels on your own by sealing cracks, increasing ventilation, and testing for radon regularly.</p></div>

Q: Can I use my sump pit for radon mitigation?

• <div><p>If your home has a sump pit, you can integrate it with a radon mitigation system. You can accomplish this by sealing the pump cover with an airtight lid that accommodates radon vent pipes and sump pump hoses. This allows the vent pipe to redirect the radon gas outside of your home.</p></div>

Q: How much does a radon mitigation system cost?

• <div><p>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.</p></div>

Q: How does radon enter my home?

• <div><p>Radon enters your home when warm air begins to rise and exits through the roof, creating a vacuum that pulls cooler air from under the foundation. Part of that air is radon, which is an invisible, odorless gas that develops naturally when radioactive particles are deep within the ground. Those particles usually come from decaying matter in soil and rocks.</p></div>

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Verified Reviews for Radon Detection And Reduction pros in Saint Martins, MO

*The Angi rating for Radon Detection And Reduction companies in Saint Martins, MO 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 Saint Martins, MO 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 August 29, 2025

Reviewed in August 2025
I had my home treated by One Source Pest Solutions, LLC on August 18, 2025, and I couldn’t be more satisfied with the service. Loren and Blake were the technicians who came out—they were both professional, courteous, and clearly knowledgeable about what they were doing. They took the time to...
One Source Pest Solutions, LLC
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Reviewed in May 2024
The job was when when he said it would be done. I said to leave the sticks and stumps there and they picked them up and see them nice and neatly by the fence with out asking them to do. Cleaned up so good it looked like no one had work done to my trees
Fosters Tree Services LLC
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Reviewed in March 2024
We scheduled for Friday evening. Thursday afternoon they called and said they could come by and do it that afternoon. They came and it was loaded and removed in less than 30 minutes.The call to schedule and the removal all in the same say. You canâ t beat it.!
Chaos Cleanup Crew - Junk Removal, LLC
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Reviewed in February 2024
High winds took down a portion of an old maple tree in the front yard and left it unstable. We were left with a large hole in the roof as well due to impact. Colterâ s was very quick to look at the tree and give us an estimate. The next morning the tree and stump were completely removed and our...
Colter's Tree Service
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Reviewed in July 2023
John gallerano was an awesome technician and has excellent customer service. And awesome prices and great stock!
Precision Garage Door of Waco
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Reviewed in April 2023
They were very helpful in assisting with insurance claim. Arrived on site to do the work within a few days of insurance approval of replacement of the roof and completed the job in 2 days. Cleanup was immaculate. My neighbors and friends have given great comments on the roof. I cannot express...
Missouri Metal Roofing, LLC
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Reviewed in December 2022
First Chase was so quick to answer my online inquiry. Literally within minutes I had a quote for service (on a Sunday!) and the service scheduled in one more day! When does that ever happen? Chase and Alexa were very knowledgeable and willing to go the extra mile. I asked for a couple...
Safeguard Home Solutions
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Reviewed in August 2022
Ryan was truly wonderful in explaining what would be done and that they would clean and take everything away when the project was completed.
Continental Siding Supply, Inc.
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Reviewed in January 2022
They responded quickly and did a great job on sealing and cleaning my gutters.
Leaf Home Bath
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Reviewed in December 2021
I neded some trees removed, they did it quickly and cleanly
Cevet Tree Care
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Find Radon detection and reduction specialists in Saint Martins

Safeguard Home Solutions

5.0(

)

Radon Gas - Abatement

Serving Saint Martins, MO and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Received information about our Radon testing device that made us feel more comfortable about it working properly. We were treated with respect."

Response time7 hrs

Response rate96%

5 neighbors recently requested a quote

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Full Scope Home Inspections

5.0(

)

Radon Gas - Testing

Serving Saint Martins, MO and surrounding areas

Approved

In business since 2014

Free estimates

Credit card accepted

"Randall went above and beyond what I thought would be done for a home inspection, was willing to crawl into small spaces. He did a very thorough job, and his report was very detailed, and that's why we appreciate his work."

Response time3 hrs

Response rate93%

Recommended by100%of homeowners

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SWAT Environmental, Inc.

4.5(

)

Radon Gas - Abatement

Serving Saint Martins, MO and surrounding areas

In business since 1988

Free estimates

Credit card accepted

"Overall everything was pretty good. I felt the installation could have looked much cleaner but it is fine. I still haven't re tested to see what my radon levels are now."

Recommended by97%of homeowners

Radon Gas - AbatementRadon Gas - Testing

Serving Saint Martins, MO and surrounding areas

In business since 2020

Free estimates

Credit card accepted

"Great value, very fair price."

Response time3 days

Recommended by100%of homeowners

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Braun's Inspection Consultants

4.7(

)

Radon Gas - Testing

Serving Saint Martins, MO and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"very professional and conscientious. timely in responses and thorough in inspection"

Recommended by100%of homeowners

Serving Saint Martins, MO and surrounding areas

In business since 2005

Free estimates

Mid MO Inspectors will provide you or your business with a full service approach to all your inspection needs. Please feel confident in contacting Mid MO Inspectors for your next inspection.

Recommended by100%of homeowners

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Brandsted Property Preservation

New to Angi

Radon Gas - Testing

Serving Saint Martins, MO and surrounding areas

In business since 2011

Free estimates

With over 10 years of experience in the home inspection industry, we are the experts you need to take care of your home. We will treat your home as we would treat our own. Give Brandsted Home Inspections a call today. We look forward to working with you.

Response time10 mins

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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.

There are steps you can take as a homeowner to remediate radon yourself. While a radon reduction professional can make the biggest impact in your home, you can make efforts to improve radon levels on your own by sealing cracks, increasing ventilation, and testing for radon regularly.

If your home has a sump pit, you can integrate it with a radon mitigation system. You can accomplish this by sealing the pump cover with an airtight lid that accommodates radon vent pipes and sump pump hoses. This allows the vent pipe to redirect the radon gas outside of your home.

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.

Radon enters your home when warm air begins to rise and exits through the roof, creating a vacuum that pulls cooler air from under the foundation. Part of that air is radon, which is an invisible, odorless gas that develops naturally when radioactive particles are deep within the ground. Those particles usually come from decaying matter in soil and rocks.

The Saint Martins, MO 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.

See all articles

Mitchell Grant
•
Mar 18, 2026Mar 18, 2026
How Much Does a Radon Mitigation System Cost? [2026 Data]
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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•
Apr 6, 2026Apr 6, 2026
How Much Does Radon Remediation Cost? [2026 Data]
Get clear answers on how much radon remediation costs, including average prices, key cost factors, and tips to save money on your home’s radon mitigation.
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Mar 18, 2026Mar 18, 2026
How Much Does Radon Testing Cost? [2026 Data]
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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Jul 9, 2026Jul 9, 2026
Who Installs Radon Mitigation Systems?
Radon is a gas that you can't see or smell and is harmful to your health. If your home has radon, you need to know who installs radon mitigation systems.
Jacqueline DeMarco
•
Jul 9, 2026Jul 9, 2026
What Is Radon and How Does It Get In Your Home?
What is radon gas? Find out what this radioactive gas is, why it is dangerous, how it gets in your home, and how to mitigate it.
Jacqueline DeMarco
•
Jul 9, 2026Jul 9, 2026
What Is Radon Testing?
What is radon testing? Radon testing measures the presence and concentration of radon gas within indoor environments. Read on to learn more.