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*The Angi rating for Radon Detection And Reduction companies in Johns Island, SC 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 Johns Island, SC 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 July 24, 2026

Find Radon detection and reduction specialists in Johns Island

Avatar for Integrity Home Inspection Services Group, LLC
Integrity Home Inspection Services Group, LLC
4.9(
72
)
Radon Gas - Testing

Serving Johns Island, SC and surrounding areas

Approved

In business since 2014

Free estimates

Credit card accepted

"We hired Alan to perform a Radon test for us in our new home. Alan was very professional. He was responsive and flexible with his schedule to meet our needs. He was a pleasure to work with. We will be using him again for any additional services we require (home inspections, etc...)"
Crawlspace Inspection
Response time2 hrs
Response rate93%
Recommended by96%of homeowners
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Environmental Service Group
New to Angi
Radon Gas - Testing

Serving Johns Island, SC and surrounding areas

In business since 2010

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! We are family owned and operated, so please let us know how our family can take care of yours!\n\n

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Avatar for Sabal Home Inspections
Sabal Home Inspections
New to Angi
Radon Gas - Testing

Serving Johns Island, SC and surrounding areas

In business since 2024

Free estimates

Warranties offered

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.\n\n\n

Response time2 days
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Radon Detection and Reduction questions, answered by experts

A homeowner can install a radon mitigation system on their own. But it’s a challenging DIY that requires a lot of knowledge about radon mitigation as well as familiarity with local regulations. You do not want to risk an improper installation that leaves the system unable to detect radon or gives it a shortened life span. Relying on a professional is the surest way to guarantee a successful installation.

Radon is present almost everywhere but, like sunlight, the concentration levels and how often you are exposed to it have a large part to play in just how dangerous it is. There are levels of radon that are acceptable inside a house, but above a certain limit, radon becomes a serious radioactive hazard that is a known cause of lung cancer. In fact, radon exposure is the number two leading cause of lung cancer (after smoking).

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.

Radon is the number one non-smoking cause of lung cancer in the United States, but it can cause some other concerning side effects in the meantime. If you have a raspy voice, chest pains, trouble breathing, difficulty swallowing, or any of the above, don’t hesitate to perform radon testing and install a mitigation system as soon as possible.

The Johns Island, SC 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.

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