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Top-Rated Radon detection and reduction specialists in Richmond - Updated Nov 2026

Avatar for Bull's Eye Home Inspection
Bull's Eye Home Inspection
4.8(
28
)
Radon Gas - Testing

Serving Richmond, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Small jobs welcome

"Mat is the inspector realtors hate... tongue-in-cheek. He is extremely knowledgeable, has great attention to detail, and is very honest. If there is something wrong with the property, you better believe he's going to find it. He takes the time and does a thorough job. I highly recommend him!"
Knee wall in Chicago Bungalow
Hydronic floor heating
Small flat roof on gable shingled roof
Overview of townhome in Glenview
Townhome Attic

+4

Response time3 hrs
3 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Gardner Services
Gardner Services
4.7(
17
)
Radon Gas - Abatement

Serving Richmond, IL and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"This company is great to work with. They did some mold testing on parents’ home and did excellent work. They also did some work on my home. They replaced a water heater and bathroom fans. He was easy to get a hold of, personable and come over right away."
Additional Photos
Additional Photos
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Additional Photos
Additional Photos

+18

Response time7 hrs
Response rate100%
11 neighbors recently requested a quote
Avatar for U.S. Waterproofing
U.S. Waterproofing
4.2(
598
)
Radon Gas - Abatement

Serving Richmond, IL and surrounding areas

Approved

In business since 1957

Free estimates

Warranties offered

"Called company on Monday and got an appointment for an inspection on Wednesday. That following Monday, the technician arrived and went through each step is sealing off the concrete foundation to the water leak. The fix worked well and was put to the test with the recent record rains. Not one drop of water came into the basement."
Radon Mitigation
Radon Mitigation
Basement Waterproofing
Basement Waterproofing
Response time1 day
Response rate100%
14 neighbors recently requested a quote
Radaquest Radon Inspectors
5.0(
4
)
Radon Gas - Testing

Serving Richmond, 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."
Response time5 hrs
Response rate87%
Recommended by100%of homeowners
Avatar for Safe Haven Radon Solutions, LLC
Safe Haven Radon Solutions, LLC
5.0(
7
)
Radon Gas - Abatement

Serving Richmond, IL and surrounding areas

In business since 2019

Free estimates

Credit card accepted

"If you want the job done quickly and done right, Safe Haven Radon is it. On time for quote appointment and later scheduled work. Easily came up with a plan to mitigate the whole basement with one fan. VS another company wanted to install 2 fans which would only cover half the basement and we could â wait and see if more work needed to be done.â Safe Haven Radon was the only company that wanted to make sure the radon levels in the WHOLE house would be close to zero. They also guaranteed that once the work was done radon levels would be below 1. Another company told me â you donâ t live in the kitchen, so we donâ t need to test there.â Why would we do all this work and NOT make sure the whole house was safe? Safe Haven Radon did the work in a few days, made sure all the pipes were in unfinished areas, and left areas impeccably clean. He also made sure that the outside fan and pipes were in an area that made sense for the house, near other pipes and A/C, even though it meant doing a little extra inside work. These guys were the best!"
Suction point
Residential system
Response time8 hrs
Response rate92%
Recommended by100%of homeowners
Avatar for HomeSpecs
HomeSpecs
5.0(
7
)
Radon Gas - AbatementRadon Gas - Testing

Serving Richmond, IL and surrounding areas

In business since 2008

Free estimates

Emergency services offered

Local and owner operated for over 10 years. HomeSpecs is a professional home inspection company with a main priority to identify the damaged and non-functioning components of the property. This analysis will be conducted by a specially trained and qualified home inspector who will help to determine the condition of the building.

Recommended by100%of homeowners
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Radon Detection and Reduction FAQs, answered by experts

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.

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

The natural breakdown of uranium in soil, rock, and water can cause radon to appear in a home. The gas seeps into homes through cracks in foundations, walls, or floors, as well as through gaps around pipes or construction joints. Radon levels are influenced by soil composition, building materials, and ventilation. Poorly sealed or airtight homes can trap radon, allowing it to accumulate.

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.

You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.

The Richmond, IL 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.