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Verified Reviews for Radon Detection And Reduction pros in Richmond, CA
*The Angi rating for Radon Detection And Reduction companies in Richmond, 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 Richmond, 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 06, 2025
Find Radon detection and reduction specialists in Richmond

Environmental Testing & Research Laboratories, Inc
Environmental Testing & Research Laboratories, Inc
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
"Excellent, as usual. I have been using Larry's services for a few years. I have a cream carpet with a lot of mileage on it. He always manages to make it look good again with his thorough cleaning and deodorizing. Larry is reliable, punctual, efficient, and professional. I don't hesitate to call him, and would highly recommend his services."
M W on May 2018
carpet cleaning
"Excellent, as usual. I have been using Larry's services for a few years. I have a cream carpet with a lot of mileage on it. He always manages to make it look good again with his thorough cleaning and deodorizing. Larry is reliable, punctual, efficient, and professional. I don't hesitate to call him, and would highly recommend his services."
M W on May 2018

Dry Down Inc
Dry Down Inc
Dry Down Inc. provides commercial, and residential customers with outstanding water damage restoration, water leak detection, mold remediation service, emergency services including the processes of advanced structural drying, dehumidification, flood damage, sewage decontamination and sanitation as well as air duct cleaning. Our trained and certified technicians use the most advanced technology and equipment available to provide the best possible service. More people in California depend on Dry Down than on any other company. Homeowners and landlords trust Dry Down, drying California one square inch at a time! Established in 2002. Dry Down Inc. is a 24hr Emergency Service Company. We offer a 1-2 hr response time. Our main goal at Dry Down is to offer superb services and peace of mind to homeowners and landlords.
"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!"
Emily H on March 2024
Dry Down Inc. provides commercial, and residential customers with outstanding water damage restoration, water leak detection, mold remediation service, emergency services including the processes of advanced structural drying, dehumidification, flood damage, sewage decontamination and sanitation as well as air duct cleaning. Our trained and certified technicians use the most advanced technology and equipment available to provide the best possible service. More people in California depend on Dry Down than on any other company. Homeowners and landlords trust Dry Down, drying California one square inch at a time! Established in 2002. Dry Down Inc. is a 24hr Emergency Service Company. We offer a 1-2 hr response time. Our main goal at Dry Down is to offer superb services and peace of mind to homeowners and landlords.
"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!"
Emily H on March 2024

Roofmax
Roofmax
Award winning. Additional DBA - Roofmax, Inc., Yorkshire Roofing
Award winning. Additional DBA - Roofmax, Inc., Yorkshire Roofing

S & Y Corp
S & Y Corp
Please visit our company review site- http://www.bbb.org/greater-san-francisco/business-reviews/contractors-general/s-and-y-corporation-in-fremont-ca-190476
Please visit our company review site- http://www.bbb.org/greater-san-francisco/business-reviews/contractors-general/s-and-y-corporation-in-fremont-ca-190476

Standish Inspections
Standish Inspections
Home, Commercial, Mold, Radon, Lead and Asbestos inspections. Travel may charges apply.
Home, Commercial, Mold, Radon, Lead and Asbestos inspections. Travel may charges apply.

Wall Inspections
Wall Inspections
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.
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.
Buyers Protection Group (BPG)
Buyers Protection Group (BPG)
At BPG, we believe home inspections shouldn't end at the driveway. Our inspectors and engineers undergo thorough background checks and must meet ongoing training and performance standards -- they are a selective group of professionals.With so many inspection companies to choose from, how do you select one that fits your needs? We've earned a solid reputation for standing behind our work and providing distinct value advantages that help protect our clients.
"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."
Ashok S on August 2025
At BPG, we believe home inspections shouldn't end at the driveway. Our inspectors and engineers undergo thorough background checks and must meet ongoing training and performance standards -- they are a selective group of professionals.With so many inspection companies to choose from, how do you select one that fits your needs? We've earned a solid reputation for standing behind our work and providing distinct value advantages that help protect our clients.
"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."
Ashok S on August 2025

P W Stephens Environmental Inc
P W Stephens Environmental Inc
P.W. Stephens is on of the largest and most experienced residential abatement contractor in the nation. P.W. Stephens is fully licensed and accredited and servicing clients throughout California. We have successfully completed over 250,000 residential, commercial and industrial projects serving contractors, Insurance professionals, homeowners, realtors, property managers, mortgage lenders, and industry professionals in the public and private sectors. P.W. Stephens has long been a respected name in the asbestos industry, and due to our size and strength in the asbestos abatement industry, P.W. Stephens will continue to grow into new environmental fields as the need arises. We have and always will be dedicated to providing the highest job quality and responsiveness to our customer’s needs and requirements. We welcome your suggestions and comments.
"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!"
EJ P on September 2023
P.W. Stephens is on of the largest and most experienced residential abatement contractor in the nation. P.W. Stephens is fully licensed and accredited and servicing clients throughout California. We have successfully completed over 250,000 residential, commercial and industrial projects serving contractors, Insurance professionals, homeowners, realtors, property managers, mortgage lenders, and industry professionals in the public and private sectors. P.W. Stephens has long been a respected name in the asbestos industry, and due to our size and strength in the asbestos abatement industry, P.W. Stephens will continue to grow into new environmental fields as the need arises. We have and always will be dedicated to providing the highest job quality and responsiveness to our customer’s needs and requirements. We welcome your suggestions and comments.
"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!"
EJ P on September 2023
KENCO construction and handyman service
KENCO construction and handyman service
I have a handy man and construction (no job is to small! I offer senior discount and can complete your project promptly,professionally and with in your budget!!!! My name is Ken I am the owner -Workhorse with years of experience. I loom forward to hearing from you!!
I have a handy man and construction (no job is to small! I offer senior discount and can complete your project promptly,professionally and with in your budget!!!! My name is Ken I am the owner -Workhorse with years of experience. I loom forward to hearing from you!!
The Richmond, 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.
•Discover the average indoor air quality testing cost, what impacts pricing, and how to budget for healthier air in your home.
•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.

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.

Want to learn how to master DIY radon mitigation? We have a step-by-step guide on how to complete this challenging project on your own.

Radon is a radioactive gas that can enter a home from the ground. Prepare yourself for mitigation by answering these questions before hiring a pro.

How long does a radon mitigation system last? A properly installed and maintained system can last 20 years or more, but various issues can reduce the life span.
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- 🌱 "Mow a small front yard"
- 🛠 "Fix a leaking pipe under the sink"
- 🏠 "Repair shingles on an asphalt roof"




