Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in Castlewood, SD

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>

Q: Do radon mitigation systems decrease home value?

• <div><p>No, radon mitigation systems do not decrease home value or make a home harder to sell. In areas where homes experience similar radon exposure risks, a radon mitigation system is viewed as an improvement. Potential homebuyers often opt to buy a home with a radon mitigation system already installed to reduce the risk of cancer for their families.</p></div>

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: What steps should be taken if high radon levels are detected?

• <div><p>If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.</p></div>

Q: Why is radon gas abatement necessary for homes?

• <div><p>Radon is a cancer-causing radioactive gas that poses serious health risks, infiltrating homes through foundation cracks and unnoticed spaces.</p></div>

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Verified Reviews for Radon Detection And Reduction pros in Castlewood, SD

*The Angi rating for Radon Detection And Reduction companies in Castlewood, 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 Castlewood, 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 February 20, 2026

Reviewed in February 2026
Miguel was excellent. Checked everything inside and out. Explained how termites work and what to look for.
Cummings Termite & Pest Control
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Reviewed in October 2025
We hired Lindner Lawn Care and Home Improvement to construct a new porch/steps on the rear of our home. We are very pleased with the craftsmanship put into our project. Owner/Operator Nolan Lindner did an outstanding job from start to finish. We have a few other projects for next spring and...
Lindner Lawn and Home Improvement
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Reviewed in October 2025
Craig was great help with picking out the new shingles and new railing and was able to have the new roof done a week later.
Craig Johnson Contracting, LLC
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Reviewed in September 2024
We called Bo and he came out Saturday and fixed the problem for us and he was very respectful and honest. He did a great Job and he is the one that is our go to for sure. Quick response and definitely an honest hard working and that makes all the difference knowing I do not have to worry at all...
Greywater
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Reviewed in July 2022
Adam and his team are very hard workers. There were a few issues that surfaced throughout the process and Adam address all in a professional manner. Adam offered to deliver more rock that I requested, Adam gave me, a disabled Veteran, a 10% military discount, he saved me money by showing me how...
Mertz Fencing
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Reviewed in March 2022
Aaron shoemaker, seth Jain and Dustin McCall were very good at what they do and very helpful in all explainations
Groundworks
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Reviewed in February 2022
Excellent! Bryan kept me informed during the process and he takes pride in his work! He is very detailed and his quality of work is second to nobody!
Total Contracting and Improvements, LLC
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Reviewed in October 2021
Very fast, efficient and affordable!
Service Tec Appliance Repair
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Reviewed in June 2021
They worked efficiently and were easy to work with. We were able to get back to normal life quickly. Personnel was kind to adults, children, and pets.
Commercial Building Maintenance and Restoration
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Reviewed in December 2020
They did and excellent job, they were quick and prompt with their service and would definitely recommend them to anyone
S&S Plumbing and Drain Cleaning - Home Facebook
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Find Radon detection and reduction specialists in Castlewood

Blackburn Foundation Repair, LLC

4.6(

)

Radon Gas - AbatementRadon Gas - Testing

Serving Castlewood, SD and surrounding areas

Approved

In business since 1992

Free estimates

Warranties offered

"Blackburn came out to repair my garage foundation. They were quick, efficient, and left the area in great condition."

Response time1 day

96 neighbors recently requested a quote

Recommended by80%of homeowners

Radon Gas - AbatementRadon Gas - Testing

Serving Castlewood, SD and surrounding areas

In business since 2021

Free estimates

Credit card accepted

"Jeremy was very professional and pleasant to work with!! I have allergies and can breathe so much better in my house now!!"

Response time20 mins

Recommended by100%of homeowners

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Empire Home Inspections, LLC

New to Angi

Radon Gas - Testing

Serving Castlewood, 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

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Radon Detection and Reduction questions, answered by experts

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.

No, radon mitigation systems do not decrease home value or make a home harder to sell. In areas where homes experience similar radon exposure risks, a radon mitigation system is viewed as an improvement. Potential homebuyers often opt to buy a home with a radon mitigation system already installed to reduce the risk of cancer for their families.

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.

If high radon levels are detected, steps include sealing entry points, installing a mitigation system, and retesting the air regularly to ensure reduced levels.

Radon is a cancer-causing radioactive gas that poses serious health risks, infiltrating homes through foundation cracks and unnoticed spaces.

The Castlewood, SD 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.
Alison Kasch
•
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.
Angi
•
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.
Amy Freeman
•
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.