Top-rated radon detection and reduction specialists.

Best radon detection and reduction specialists near Castroville, CA

Q: What would cause radon in a house?

• <div><p>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.</p></div>

Q: Can you remediate radon yourself?

• <div><p>There are steps you can take as a homeowner to remediate radon yourself. While a radon reduction professional can make the biggest impact in your home, you can make efforts to improve radon levels on your own by sealing cracks, increasing ventilation, and testing for radon regularly.</p></div>

Q: How much does it cost to replace a radon fan?

• <div><p>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.</p></div>

Q: How long does radon mitigation take?

• <div><p>Installation typically takes 1-2 days, depending on the system and property layout.</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>

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

*The Angi rating for Radon Detection And Reduction companies in Castroville, 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 Castroville, 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 December 09, 2025

Reviewed in December 2025
The electricians who came by went above and beyond to diagnose issues beyond what I was looking to fix/replace. They explained their process and findings in easy-to-understand terms and completed the job on the same day.
Lecce Electric
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Reviewed in July 2025
I reached out to Monterey Vista Termite Control to get an estimate on fumigation, and though I reached out on a Saturday over a holiday weekend, Andy got back to me immediately on that same day, answered all our questions, and immediately provided us with an estimate that was lower than the...
Monterey Vista Termite Control
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Reviewed in February 2025
Trejos landscaping and gardening has completed several projects for us and provide regular maintenance. They have installed a new sprinkler system, and redesigned our side yard, installing some edging and wood chips and mulch around our rose bushes. They have transformed our front yard and we...
Trejo's Landscaping & Gardening, LLC
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Reviewed in May 2023
Exemplary Service and Impeccable Results: A Stellar Experience with Clear Water Source I recently had the pleasure of working with Clear Water Source,, for the installation of a water softener system and reverse osmosis in my home, and I am thrilled to say that my experience was nothing short...
Clear Source Water Treatment
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Reviewed in May 2023
Gil Tree Service did an excellent job removing 3 Palm Trees in one day. He showed up on time and everything was handled professionally and at a reasonable cost. Joel and crew left the site cleaned up perfectly on a windy day. I recommend his services and will hire him again in the future.
Gil Tree Service
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Reviewed in April 2023
The job had special requirements as our household has someone who is terribly allergic to most cleaning products. I had a cigarette smoke saturated room and bath that needed to be cleaned after the heavy smoker who lived there left, but we couldn't use regular cleaning products. They came...
Ernesto's Cleaning Services
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Reviewed in November 2022
Gabriel was efficient and diagnosed my problem quickly. We talked about how to approach fixing it and he was obviously experienced and professional.
GN Central Coast Plumbing, Inc.
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Reviewed in August 2022
They gave me options and executed the scope of work I wanted. They mulched the tree and removed branches from the trimmed treed. At my request the put that material in a weedy side yard. Now that yard looks and smells great. The super shaggy Palm looks many ft taller now that it's all trimmed...
La Sirenita Tree Service
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Reviewed in May 2022
AAC did a fantastic job- the best I've ever had by a window cleaner. Not just the window glass is crystal clear, but also the screens, tracks and seals are spotless. The screens look brand new. In addition to the windows, they cleaned the gutters and repaired several leaking corners. I liked...
All About Cleaning Windows and Gutters
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Reviewed in February 2022
Williams Roofing Company replaced our 3,600 square foot home roof and 1900 square foot barn roof in February 2022. We are extremely pleased with the customer service, quality craftmanship, and professionalism we received throughout the entire process. When we contacted Williams, our estimator...
WILLIAMS ROOFING CO
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Top-Rated Radon detection and reduction specialists in Castroville - Updated Nov 2026

MG Remediation, Inc.

3.3(

)

Radon Gas - Abatement

Serving Castroville, 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."

Response time4 days

Recommended by80%of homeowners

Radon Gas - AbatementRadon Gas - Testing

Serving Castroville, CA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"The person that came was fine. He just walked around and did the inspection. He also gave us some recommendations. The person was prompt, knowledgeable, and reasonably priced. He was very punctual."

Recommended by100%of homeowners

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Radon Detection and Reduction FAQs, answered by experts

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.

There are steps you can take as a homeowner to remediate radon yourself. While a radon reduction professional can make the biggest impact in your home, you can make efforts to improve radon levels on your own by sealing cracks, increasing ventilation, and testing for radon regularly.

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.

Installation typically takes 1-2 days, depending on the system and property layout.

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 Castroville, 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

Mitchell Grant
•
Sep 28, 2026Sep 28, 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
•
Oct 30, 2026Oct 30, 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
•
Sep 23, 2026Sep 23, 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.