Top-rated radon detection and reduction specialists.

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

Enter your zip and get matched with up to 5 pros

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

Select your specific project to find the pro for you.

Find Radon detection and reduction specialists in Somis

Avatar for All Clear Environmental Inc

All Clear Environmental Inc

4.91(
141
)
•Approved Pro

All Clear Environmental Inc

4.91(
141
)
•Approved Pro
Customers say: Quality work
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
22 years of experience

All Clear Environmental is Southern California's one-stop solution for asbestos removal, lead abatement and mold remediation. Our team of licensed professionals has over 100 years of combined experience in the thorough, discrete and environmentally responsible removal of hazardous materials. If you think that your property may be at risk for containing asbestos, lead or mold, we can provide you with the most cost-effective solution. And you can be sure that when we're finished, it will be All Clear.

"Abatement and Remediation are not for the weak or weary - whether managing a personal or professional project, proper containment practices and efforts are essential. I will forever recommend and promote All Clear Environmental - a family-run business with hands-on customer relations. Larry Enos and his son, Beckett, put forth great effort to communicate, assess, and manage the process in good faith. All Clear's team of Rigo et al, handled the physical abatement and remediation, in our home. Rigo and his team made us feel 100% safe, confident, and secure throughout each stage - which was no easy feat with children and pets, in a home. And while there are no accolades for being second-round mold recipients, we hit the jackpot in working with All Clear. We have worked with other companies only to be left with poor communication, a tendency to be overcharged, and dishonesty. Beckett was available almost 24/7 to answer questions via text and live calls. When I felt doubt, Beckett made time to discuss alternative avenues and ensure our best interests were at the forefront of every decision. I recommend All Clear Environmental to friends, neighbors, and strangers with 6/5 stars. Your house is your home - and mold is personal. A company that recognizes the need to love your home well, is a gem beyond measure. Thank you, All Clear Environmental - good people attract good people! Gratefully, Jackie"

Jackie D on August 2024

All Clear Environmental is Southern California's one-stop solution for asbestos removal, lead abatement and mold remediation. Our team of licensed professionals has over 100 years of combined experience in the thorough, discrete and environmentally responsible removal of hazardous materials. If you think that your property may be at risk for containing asbestos, lead or mold, we can provide you with the most cost-effective solution. And you can be sure that when we're finished, it will be All Clear.

"Abatement and Remediation are not for the weak or weary - whether managing a personal or professional project, proper containment practices and efforts are essential. I will forever recommend and promote All Clear Environmental - a family-run business with hands-on customer relations. Larry Enos and his son, Beckett, put forth great effort to communicate, assess, and manage the process in good faith. All Clear's team of Rigo et al, handled the physical abatement and remediation, in our home. Rigo and his team made us feel 100% safe, confident, and secure throughout each stage - which was no easy feat with children and pets, in a home. And while there are no accolades for being second-round mold recipients, we hit the jackpot in working with All Clear. We have worked with other companies only to be left with poor communication, a tendency to be overcharged, and dishonesty. Beckett was available almost 24/7 to answer questions via text and live calls. When I felt doubt, Beckett made time to discuss alternative avenues and ensure our best interests were at the forefront of every decision. I recommend All Clear Environmental to friends, neighbors, and strangers with 6/5 stars. Your house is your home - and mold is personal. A company that recognizes the need to love your home well, is a gem beyond measure. Thank you, All Clear Environmental - good people attract good people! Gratefully, Jackie"

Jackie D on August 2024

Avatar for Pure Restoration Inc

Pure Restoration Inc

4.95(
65
)
•Approved Pro

Pure Restoration Inc

4.95(
65
)
•Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
24 years of experience

Quality Service You Can Count On! If you are experiencing water damage, mold or fire damage problems, or simply are just looking to remodel your kitchen or bathroom, Pure Restoration can help you! Our experts are highly knowledgeable with mold testing, structural restoration & remediation, including reconstruction for water damage or fire damage, water extraction and services. Pure can deal with virtually any project and takes pride in leaving our customers satisfied! We offer FREE inspections and estimates for your residential home or commercial property. With over 20 years of experience in the industry, Pure Restoration delivers advanced and reliable professional restoration services including mold inspections and testing throughout Los Angeles.

"Very pleased with the work they provided. Susan, the Administrative Assistant/Production Assistant helpful with all my concerns and questions. I’ve received many compliments on the completed project."

Roberta A on November 2025

Quality Service You Can Count On! If you are experiencing water damage, mold or fire damage problems, or simply are just looking to remodel your kitchen or bathroom, Pure Restoration can help you! Our experts are highly knowledgeable with mold testing, structural restoration & remediation, including reconstruction for water damage or fire damage, water extraction and services. Pure can deal with virtually any project and takes pride in leaving our customers satisfied! We offer FREE inspections and estimates for your residential home or commercial property. With over 20 years of experience in the industry, Pure Restoration delivers advanced and reliable professional restoration services including mold inspections and testing throughout Los Angeles.

"Very pleased with the work they provided. Susan, the Administrative Assistant/Production Assistant helpful with all my concerns and questions. I’ve received many compliments on the completed project."

Roberta A on November 2025

Avatar for James Clifton General Contractor

James Clifton General Contractor

4.81(
26
)
•Approved Pro

James Clifton General Contractor

4.81(
26
)
•Approved Pro
Customers say: True professional
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
20 years of experience

We are a Restoration and Home Repair Company. We specialize in FIRE/WATER damage, DRAINAGE/French Drains, crawlspace drainage and clean out, sump pumps, attic and crawlspace insulation and Home Repairs 1. ATTIC/CRAWLSPACE INSULATION 2. HOME REPAIRS 3. RETROFITTING - EARTHQUAKE SAFETY 4. DRAINAGE/FRENCH DRAINS 5. CRAWLSPACE SYSTEMS 6. DOORS & WINDOWS 7. FUNGUS & TERMITE REPAIRS

"Extremely well. They turned up on time, they were efficient and communicated extremely well. Best contractors that we've used."

Alan C on December 2024

We are a Restoration and Home Repair Company. We specialize in FIRE/WATER damage, DRAINAGE/French Drains, crawlspace drainage and clean out, sump pumps, attic and crawlspace insulation and Home Repairs 1. ATTIC/CRAWLSPACE INSULATION 2. HOME REPAIRS 3. RETROFITTING - EARTHQUAKE SAFETY 4. DRAINAGE/FRENCH DRAINS 5. CRAWLSPACE SYSTEMS 6. DOORS & WINDOWS 7. FUNGUS & TERMITE REPAIRS

"Extremely well. They turned up on time, they were efficient and communicated extremely well. Best contractors that we've used."

Alan C on December 2024

Avatar for Radon Solutions California, LLC

Radon Solutions California, LLC

4.88(
4
)
•Approved Pro

Radon Solutions California, LLC

4.88(
4
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
4 years of experience

Welcome to Radon Solutions California, LLC. We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you!

"Absolutely amazing experience. My home radon levels were averaging 5.0 pCi/L. Two days after Edward and his team finished the mitigation job the levels went down to 0.3. Incredible result. I can’t be happier."

Francisco D on December 2018

Welcome to Radon Solutions California, LLC. We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you!

"Absolutely amazing experience. My home radon levels were averaging 5.0 pCi/L. Two days after Edward and his team finished the mitigation job the levels went down to 0.3. Incredible result. I can’t be happier."

Francisco D on December 2018

Avatar for Environmental Testing & Research Laboratories, Inc

Environmental Testing & Research Laboratories, Inc

4.85(
347
)

Environmental Testing & Research Laboratories, Inc

4.85(
347
)
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

Imperial Home Inspection

4.93(
41
)

Imperial Home Inspection

4.93(
41
)
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers

We are a home inspection company, in business since 2000. Chris is a Master CREIA inspector and a Certified Member of ASHI. We carry E&O and liability insurance.

We are a home inspection company, in business since 2000. Chris is a Master CREIA inspector and a Certified Member of ASHI. We carry E&O and liability insurance.

20/20 Advanced Property & Mold Inspections

5.00(
27
)

20/20 Advanced Property & Mold Inspections

5.00(
27
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

CRMI #13322 CREIA President, Orange County Chapter ASHI President, Orange County Chapter CREIA Inspector education provider .Master CREIA Inspector - #0086 .ASHI Certified Inspector - #249392 .CRMI (Certified Residential Mold Inspector): (ACAC) American Council for Accredited Certification .IAQC (American Indoor Air Quality Council)-#13288 .Certified Radon Measurement Provider,CDH (California Department of Health Services) #102017RT

"Mike Cantor (20/20 Advanced Property & Mold Inspection) was referred to us by a family member when we recently brought a home. He is the absolute best, most thorough, and professional inspector we have worked with. Mike responded immediately when we contacted him for a home inspection that we wanted done ASAP because of our short escrow time. We were able to set up the inspection in the same week. Mike arrived early on the date of inspection around 8:45 am (start time was 9:00 am). He requested about 7 hours to perform the inspection which caught the owner and realtor both by surprised as most home inspector only gave a cursory 3 hours inspection. Mike was meticulous in his inspection and took time to points out many aspects of the house's construction, remodeling, and reconstruction that we were unaware of. He was extremely detailed in his inspection and documentation with videos, still photos, and even drones (to inspect the roof). Mike was still going strong around the 7th hours which irked the seller/ realtor but was extremely favorable and reassuring to us when we are making such a large purschase/ investment. Mike is a little bit more expensive than your run of the mills home inspector but he is worth every pennies and more. He ended up discovering multiple issues with our house that were not apparent to us on our examinations. We ended up negotiating with the owner to reduce the sale price by $40,000. Mike continued to help us with recommendations after the completion of the inspection on vendors (termite, landscaper, roofer, etc) who he felt were reliable. We can honestly say that Mike Cantor truly loves his work and he is the only inspector we are going to use or recommend going forward. Can't thank you enough Mike."

Tuan N on January 2020

CRMI #13322 CREIA President, Orange County Chapter ASHI President, Orange County Chapter CREIA Inspector education provider .Master CREIA Inspector - #0086 .ASHI Certified Inspector - #249392 .CRMI (Certified Residential Mold Inspector): (ACAC) American Council for Accredited Certification .IAQC (American Indoor Air Quality Council)-#13288 .Certified Radon Measurement Provider,CDH (California Department of Health Services) #102017RT

"Mike Cantor (20/20 Advanced Property & Mold Inspection) was referred to us by a family member when we recently brought a home. He is the absolute best, most thorough, and professional inspector we have worked with. Mike responded immediately when we contacted him for a home inspection that we wanted done ASAP because of our short escrow time. We were able to set up the inspection in the same week. Mike arrived early on the date of inspection around 8:45 am (start time was 9:00 am). He requested about 7 hours to perform the inspection which caught the owner and realtor both by surprised as most home inspector only gave a cursory 3 hours inspection. Mike was meticulous in his inspection and took time to points out many aspects of the house's construction, remodeling, and reconstruction that we were unaware of. He was extremely detailed in his inspection and documentation with videos, still photos, and even drones (to inspect the roof). Mike was still going strong around the 7th hours which irked the seller/ realtor but was extremely favorable and reassuring to us when we are making such a large purschase/ investment. Mike is a little bit more expensive than your run of the mills home inspector but he is worth every pennies and more. He ended up discovering multiple issues with our house that were not apparent to us on our examinations. We ended up negotiating with the owner to reduce the sale price by $40,000. Mike continued to help us with recommendations after the completion of the inspection on vendors (termite, landscaper, roofer, etc) who he felt were reliable. We can honestly say that Mike Cantor truly loves his work and he is the only inspector we are going to use or recommend going forward. Can't thank you enough Mike."

Tuan N on January 2020

Avatar for One Source Group LLC

One Source Group LLC

4.69(
39
)

One Source Group LLC

4.69(
39
)
Customers say: Quality work
24 years of experience

Our company, One Source Group, combines over 40 years of experience in the environmental inspection industry. We offer the appropriate certifications to perform inspections for mold, asbestos, lead paint etc. (Certified Asbestos Consultant, Certified Asbestos Building Inspector, Certified Lead Technicians, Registered Environmental Assessor (REA). We pride our selves with providing timely, affordable and professional inspections for our clients with honest and ethical advice for their projects. What I can say is there are no "hidden charges" in our pricing. We are very upfront about that subject. We are fully insured and certified for the work we perform. Additional Contact: Chuck

Our company, One Source Group, combines over 40 years of experience in the environmental inspection industry. We offer the appropriate certifications to perform inspections for mold, asbestos, lead paint etc. (Certified Asbestos Consultant, Certified Asbestos Building Inspector, Certified Lead Technicians, Registered Environmental Assessor (REA). We pride our selves with providing timely, affordable and professional inspections for our clients with honest and ethical advice for their projects. What I can say is there are no "hidden charges" in our pricing. We are very upfront about that subject. We are fully insured and certified for the work we perform. Additional Contact: Chuck

ENVIROCHECK INC

5.00(
14
)

ENVIROCHECK INC

5.00(
14
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
"We found something looking suspicious while demolishing the roof of an old shed and decided to call Envirocheck. They came the next day on time at 8:30AM, took all necessary samples and gave us results within 24 hours. Luckily the asbestos test was all negative. I would recommend these guys any given day. They are super professional and responsive. Ten stars from our perspective!"

Monika K on May 2021

"We found something looking suspicious while demolishing the roof of an old shed and decided to call Envirocheck. They came the next day on time at 8:30AM, took all necessary samples and gave us results within 24 hours. Luckily the asbestos test was all negative. I would recommend these guys any given day. They are super professional and responsive. Ten stars from our perspective!"

Monika K on May 2021

Avatar for Multipoint Development LLC

Multipoint Development LLC

5.00(
6
)

Multipoint Development LLC

5.00(
6
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

At Multipoint Development, you will receive the best customer service and professionalism guaranteed. We offer variety of services for your residential or commercial property. If you are a contractor or a builder and need Title 24 Compliance and HERS Inspection (AKA HERS Rater), we got you covered. If you are a realtor or a homeowner and need a Home Inspector, Energy Audit, or Property Photography or Videography we’ve got you covered as well. We use top of the line equipment and extensive training to provide accurate and quality results. Our staff are constantly trained with the most up to date standards of practice for Home Inspections and Energy Audits. Multipoint Development has a 5 Star Rating on Google, Yelp, & HomeAdvisor. You can reach us at 818-747-4016 via call/text or visit our website for more information at MultipointDevelopmentLLC.com

"AMAZING CUSTOMER SERVICE AND QUALITY WORK. EVERYTHING WAS COMPLETED EFFICIENTLY AND HONESTLY. I COULD NOT RECOMMEND FRED MORE HIGHLY."

Howard L on January 2022

At Multipoint Development, you will receive the best customer service and professionalism guaranteed. We offer variety of services for your residential or commercial property. If you are a contractor or a builder and need Title 24 Compliance and HERS Inspection (AKA HERS Rater), we got you covered. If you are a realtor or a homeowner and need a Home Inspector, Energy Audit, or Property Photography or Videography we’ve got you covered as well. We use top of the line equipment and extensive training to provide accurate and quality results. Our staff are constantly trained with the most up to date standards of practice for Home Inspections and Energy Audits. Multipoint Development has a 5 Star Rating on Google, Yelp, & HomeAdvisor. You can reach us at 818-747-4016 via call/text or visit our website for more information at MultipointDevelopmentLLC.com

"AMAZING CUSTOMER SERVICE AND QUALITY WORK. EVERYTHING WAS COMPLETED EFFICIENTLY AND HONESTLY. I COULD NOT RECOMMEND FRED MORE HIGHLY."

Howard L on January 2022

...
Showing 1-10 of 63
Radon Detection and Reduction questions, answered by experts

Mold, VOCs, radon, carbon monoxide, and particulate matter are typically measured.

No level of radon is technically safe, but because it’s everywhere—even in the air outside—it’s impossible to avoid entirely. Instead, the Environmental Protection Agency encourages taking preventative measures if the levels of radon in your home rise above 2 pCi/L. (For reference, the average radon level in homes across the United States is 1.3 pCi/L.

Radon detection is crucial as prolonged exposure to radon gas, a leading cause of lung cancer, poses significant health risks in residential environments.

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.

Radon is the number one non-smoking cause of lung cancer in the United States, but it can cause some other concerning side effects in the meantime. If you have a raspy voice, chest pains, trouble breathing, difficulty swallowing, or any of the above, don’t hesitate to perform radon testing and install a mitigation system as soon as possible.

The Somis, 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

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"