Top-rated radon gas abatement pros.

Get matched with top radon gas abatement pros in Sebastopol, CA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Radon gas abatement pros in Sebastopol

Avatar for MG Remediation, Inc.
MG Remediation, Inc.
3.5(
5
)

Serving Sebastopol, CA and surrounding areas

Angi Approved

In business since 1986

Free estimates

Customers say: Quick response

"I do not recommend MG remediation to anyone looking for a reliable and conscionable contractor. Carlos and his team not only took about 3 additional weeks to complete ceiling paint, the paint they did was nowhere close to acceptable and they created damage to our house along the way. When confronted with the imperfect paint, they blamed the imperfections on the way our ceilings were built. When confronted about the extra delays (keeping in mind that the last week or so on the job they started coming only few hours to work as if our project was kind of a hobby of theirs that they show up to during their free time taking no consideration to the fact that we told them multiple times that we currently are homeless and they already exceeded the timeframe they provided us with), they blamed me and my husband for â rushingâ them which led to imperfect paint and delays. Due to the damages to the walls that they created, we had to hire other painters to paint the entire house. They also scratched and created dents in our new floors and in multiple rooms. Their excuse around that is that they usually come to a house and complete their work first which is bound to create damage and then the rest of the contractors come in. They basically take the contract signed as an excuse and cover to create all the damage they please in your house. On top of all that, the communication was very poor all along although we were promised daily updates and pictures. For all these reasons above, I cannot recommend MGM to anyone."
Vapor Intrusion for VOC and Radon
 Cleaning
 Cleaning
Testing
Testing & Abatement

+4

Response time4 days
2 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Guaranteed Property & Mold Inspection
Guaranteed Property & Mold Inspection
4.8(
43
)

Serving Sebastopol, CA and surrounding areas

In business since 1998

Free estimates

Emergency services offered

"Overall experience Terrific. Joseph is one of the most honest, straight forward guys out there. I am very thankful with God that he leasing me in the right way so that I would choose his company over the other companies out there. I’m the beginning I thought that the price was a bit high for my budget but then later I realized the skill level that he does in each one of his kinds of inspection he offers is unbelievable. I owe Joseph my life he helped me convince myself that there truly was a serious mold problem with the house that I just bought not even 1 year ago. So I moved out from my new home in the mean time before my health continues to get in more delicate situation. The mold odor has now begun to cause me to have asthma which I never ever had before in my life. The bank/ realtor Home inspection report of the home never caught any of this bad mal fowl odor and mold infestation from underneath the home. It’s crazy how some of these home inspection still are able to keep their business license when they are worth no good at all. Trust me you won’t regret yourself by choose Guaranteed Property and Mold Inspections. They are by far the best out there. They provided me with a very detailed reports which has lab results from samples they sent out and everything."
Steve z. Senior Inspector
Lucky z. VP Security
DNA Mold Test Scale
EMF Testing
Mold Ari Quality Testing

+12

Recommended by93%of homeowners
Avatar for Dry Down Inc
Dry Down Inc
4.8(
61
)

Serving Sebastopol, CA and surrounding areas

In business since 1992

Free estimates

Emergency services offered

"Angel did an amazing job pumping out over 6,000 gallons of water from under our house! Diego came out very quickly to initially assess the damage and then Angel and his team started pumping the water out just a few hours later. They worked hard from 8pm to 2am! Angel was so kind, professional, and helpful throughout the whole process! He responded to all my texts so quickly and communicated with the office for me to get all the documentation that my insurance needed. He even followed up to make sure I had everything I needed. Angel came back multiple times to check on our house and make sure everything was drying properly and that there wasn't any further damage. He left the fans under our house for over an extra week for no additional charge to make sure it was completely dry. Angel was awesome and offered the best customer service!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+5

Recommended by91%of homeowners
Avatar for Wall Inspections
Wall Inspections
5.0(
5
)

Serving Sebastopol, CA and surrounding areas

In business since 2012

Free estimates

Emergency services offered

Wall 2 Wall Property Inspections provides residential and commercial property inspections in San Jose, CA and the surrounding areas. We are strive to provide home buyers and sellers with information about real estate property in order to make them feel comfortable with their final decision. Schedule an inspection online or call us at (408) 905-9255 today.

Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+7

Recommended by100%of homeowners
Buyers Protection Group (BPG)
3.5(
85
)

Serving Sebastopol, CA and surrounding areas

In business since 1989

Emergency services offered

Warranties offered

"BPG Inspections Failed to Honor Their Guarantee or Take Accountability Summary: In my experience, BPG Inspections failed to uphold their guarantee, and I encountered poor follow-up and vague, shifting justifications for denying my claim. Details: I hired BPG Inspections in Pensacola, FL, to inspect a home I purchased in April. The inspection occurred in March, and I moved in during May. Within a few days of moving in – well within the 90-day warranty period – I discovered two issues that the inspection report had explicitly marked as functional: 1. The garbage disposal unit did not work (it made a soft noise but did not function). 2. The HVAC system failed to deliver air to the kitchen and adjacent bedroom, though the inspection report had indicated the air handling was operational and in good condition. I promptly emailed BPG about these problems, and while the inspector initially responded, I was then passed to their claims department. After repeated follow-ups, I finally received a call on June 23rd – nearly a month after reporting the issue – only to be told that neither issue was covered under their warranty. I raised the following concerns: 1. For the HVAC, the inspector had confirmed it was functional in an email, contradicting the claims department's later justification that it could not be tested. If no air reaches two rooms, it should have been evident during either heating or cooling tests – this was missed. 2. For the garbage disposal, I was told it was a "kitchen appliance" and therefore not covered, despite it being a fixture included in inspections. When I asked where the warranty excluded it, I received inconsistent explanations. At no point did the company offer to re-inspect or further investigate these issues. I expected more accountability from a professional inspection service – especially one offering a guarantee."
Recommended by61%of homeowners
Avatar for P W Stephens Environmental Inc
P W Stephens Environmental Inc
4.3(
23
)

Serving Sebastopol, CA and surrounding areas

In business since 1982

Emergency services offered

Credit card accepted

"This company was hired by my home insurance as a subcontractor and gets paid directly by the insurance.  And yet, they filed a frivolous mechanics lien against my property only a month after the work, without providing any prior preliminary notice.  This is after I received a letter from the insurance company stating that everything was paid in full.  Instead of checking up with the insurance company for any discrepancies or contacting me to discuss the matter further, they just jump right into filing a frivolous and invalid lien.  Looks like this is what this company usually does to the homeowners after just one billing cycle based on other reviews online.  This is their go-to billing method.  Unconscionable and unethical!  I will have to hire a lawyer to look into their unusual billing tactics.  Not only that, they left my window frames damaged, and left a sharp metal spike sticking out on my bedroom carpet.  I could have gotten seriously injured if I stepped on it.  They also left items damaged from the demolition, which needed to be hauled away, with sharp nails sticking out, right in my bedroom.  The gentleman who came out to do the initial evaluation was nice, but other employees seemed unhappy.  Terrible company!"
Additional Photos
Additional Photos
Additional Photos
Recommended by73%of homeowners
Christopher Carlson Construction
New to Angi

Serving Sebastopol, CA and surrounding areas

In business since 2007

Free estimates

Emergency services offered

Ive had 9 years plus experience working on high end (1mill plus) custom homes in napa under Vintage Buildes.Ive broken off on my own.I have all tools,workers and subcontractors needed for a project of any scope.Free estimates. We can discuss details of job to modify job cost(quick repair or done right, and different materials or techniques).I can bring pictures of jobs or specific pictures based on what exactly you want done. I have references. My rates are very reasonable for the amount of experience I have. I'm very creative for problem solving or cosmetic advice.

Showing 1-10 of 15
FAQs for radon gas abatement projects in Sebastopol, CA

The only way to know whether your home or water supply contains radon is to schedule a professional test. A qualified radon inspector will collect samples, deliver lab-verified results, and explain the findings for $150 to $800. Once you know your exact levels, you and your radon mitigation pro can choose the right system and tackle the problem before it affects your family’s health.

Both roles tackle radon, but they focus on different steps. Inspectors test your home, interpret the results, and determine whether levels exceed EPA guidelines. Mitigation pros design and install the system that lowers those levels. Some companies do both, but the skills and equipment differ, so always verify that the person you hire is properly certified for the specific service you need.

Installing a mitigation unit fixes radon problems by reducing indoor gas levels to established safe standards. A system designed and installed by a mitigation expert, tailored to your home's specific layout and foundation, guarantees effective radon reduction. This expert installation ensures consistent performance over time while safeguarding your indoor air quality.

Open windows and doors do not reduce radon levels because they trigger a pressure imbalance that draws radon-laden air into your home. This practice fails to control radon concentration and can even worsen the issue. An active suction mitigation system provides a proven, safe, and effective solution to reliably reduce radon levels.

Radon mitigation systems generally last between 10 and 30 years, depending on system type and maintenance. Passive systems endure the longest because they have no moving parts, whereas active systems, which use a fan, require fan replacement every 5 to 10 years. System components, such as PVC pipes, seals, and fittings, can remain effective for decades when paired with periodic inspections and proper maintenance.

Radon mitigation systems consume between 300 and 3,000 kWh of electricity per year, depending on fan size and system design. On average, an active radon fan draws 100 to 300 watts continuously, which translates to roughly 876 kWh annually, and adds $30 to $300 to your energy bill each year. Choosing a high-efficiency fan and ensuring tight sealing around pipes helps minimize these ongoing costs.

The Sebastopol, CA homeowners’ guide to radon gas abatements

From average costs to expert advice, get all the answers you need to get your job done.