Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in Greenwood, CA

Enter your zip and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in Greenwood, CA?

Select your specific project to find the pro for you.

Verified Reviews for Radon Detection And Reduction pros in Greenwood, CA

*The Angi rating for Radon Detection And Reduction companies in Greenwood, CA 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 Greenwood, CA 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 September 07, 2025

Find Radon detection and reduction specialists in Greenwood

Avatar for MG Remediation, Inc.
MG Remediation, Inc.
3.3(
8
)
Radon Gas - Abatement

Serving Greenwood, CA and surrounding areas

Approved

In business since 1986

Free estimates

Customers say: Quick response

"Peter and his team at MG Remediation are professionals. They did everything they told me they would do and the radon levels dropped significantly. Great communication, too, which always matters."
Vapor Intrusion for VOC and Radon
Cleaning
Cleaning
Testing
Testing & Abatement

+4

Response time4 days
Recommended by80%of homeowners
Request Quote
Bona Fide Property Inspections
New to Angi
Radon Gas - Testing

Serving Greenwood, CA and surrounding areas

Small jobs welcome

Credit card accepted

Offers commercial services

At Bona Fide Property Inspections, we believe that every property deserves a thorough and honest evaluation. Founded by licensed professional engineer Kirk LuMaye and construction industry professional Jeremy Karr, our company offers in-depth home inspections rooted in over a decade of forensic engineering, fire investigation and building systems expertise. We serve buyers, sellers, and homeowners with detailed, easy-to-understand reports that highlight what matters most—so you can make confident decisions with peace of mind. Whether you're purchasing your first home or managing an investment property, you can count on Bona Fide Property Inspections for integrity, precision, and professionalism on every inspection.

Request Quote
Radon Detection and Reduction questions, answered by experts

The average radon mitigation system uses about 876 kWh of electricity per year, although the exact amount of electricity used will vary depending on the size of the radon fan. Once the system is installed, the annual increase to your energy bill could range from $30 to $300 per year, again depending on the size of the fan.

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).

Yes, many systems include warranties for performance. Confirm terms with your installer.

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 Greenwood, CA 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