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*The Angi rating for Radon Detection And Reduction companies in Granite Bay, 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 Granite Bay, 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 April 28, 2026

Find Radon detection and reduction specialists in Granite Bay

Avatar for MG Remediation, Inc.
MG Remediation, Inc.
3.3(
8
)

Serving Granite Bay, 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
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Bona Fide Property Inspections
New to Angi

Serving Granite Bay, 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.

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Radon Detection and Reduction questions, answered by experts

Many radon fans carry a five-year manufacturer's warranty. That said, your radon fan should last between five and ten years. Regular inspections will ensure the fan is operating properly. Unusual or exceptional noise coming from the fan or indications on your manometer or system monitor can immediately tell you that something is amiss.

No level of radon is technically safe, but since it is present everywhere, complete avoidance is impossible. The average radon level in homes across the United States is 1.3 picocuries per liter (pCi/L). The Environmental Protection Agency (EPA) recommends taking preventative measures if your home's radon levels are between 2 and 4 pCi/L or higher.

The cost to replace a radon fan ranges from $300 to $600 for the fan itself, with installation adding an additional $200 to $500. Overall, the total cost for replacement can range from $500 to $1,100, depending on factors such as the fan model, home size, and local labor rates. If the fan is part of a larger radon mitigation system, the price may be higher.

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.

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.

The Granite Bay, 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.

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