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  • Verified reviews icon11
    Verified radon detection and reduction services reviews

Find Radon detection and reduction specialists in Olathe

Avatar for Square One Radon, LLC

Square One Radon, LLC

5.00(
40
)
Approved Pro

Square One Radon, LLC

5.00(
40
)
Approved Pro
Super Service Award
Customers say: Quick response
5 years of experience
Free onsite estimate

Square One Radon is the premier choice for radon measurement and mitigation on all projects small and large, old and new. Owner and founder, Rob Hartop, brings over 12 years of radon industry experience along with a multitude of credentials including NRPP specialty certifications for new construction, multifamily, and advanced mitigation techniques. We are licensed in the State of Colorado, and are fully insured, certified, and bonded. We can mitigate any home or building, and will give you a free quote right away. Ask about our industry-leading guarantee!

"The Square One Radon team was fantastic. I had been putting this off for a while, but am so happy to have it done. Peace of mind. The team was very professional, friendly, and easy to work with. Highly recommend!"

Matthew U on November 2025

Square One Radon is the premier choice for radon measurement and mitigation on all projects small and large, old and new. Owner and founder, Rob Hartop, brings over 12 years of radon industry experience along with a multitude of credentials including NRPP specialty certifications for new construction, multifamily, and advanced mitigation techniques. We are licensed in the State of Colorado, and are fully insured, certified, and bonded. We can mitigate any home or building, and will give you a free quote right away. Ask about our industry-leading guarantee!

"The Square One Radon team was fantastic. I had been putting this off for a while, but am so happy to have it done. Peace of mind. The team was very professional, friendly, and easy to work with. Highly recommend!"

Matthew U on November 2025


Avatar for Valley Restoration & Construction, Inc.

Valley Restoration & Construction, Inc.

4.93(
7
)
Approved Pro

Valley Restoration & Construction, Inc.

4.93(
7
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

Established in 2014, Valley Restoration & Construction, Inc., is committed to excellence and continues to be an outstanding business in Montrose county and the surrounding area. Valley Restoration & Construction, Inc., prides itself on an outstanding record of quality service. Our longevity is a testament to the level of service and quality you'll get when you choose Valley Restoration & Construction, Inc., for your abatement and restoration needs. We have a full staff of highly talented and motivated individuals that are eager to help you with all of your needs. We are excited that you have expressed an interest in our services and we look forward to working with you.

"â ¦"

Jerilyn B on March 2022

Established in 2014, Valley Restoration & Construction, Inc., is committed to excellence and continues to be an outstanding business in Montrose county and the surrounding area. Valley Restoration & Construction, Inc., prides itself on an outstanding record of quality service. Our longevity is a testament to the level of service and quality you'll get when you choose Valley Restoration & Construction, Inc., for your abatement and restoration needs. We have a full staff of highly talented and motivated individuals that are eager to help you with all of your needs. We are excited that you have expressed an interest in our services and we look forward to working with you.

"â ¦"

Jerilyn B on March 2022


Avatar for Square One Radon LLC

Square One Radon LLC

5.00(
1
)
Approved Pro

Square One Radon LLC

5.00(
1
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

Fully certified and locally owned, Square One Radon offers full service radon testing, radon mitigation, crawlspace encapsulation, and new construction radon services. Square One stands apart from the competition by utilizing the most scientific and calculated approaches to providing radon testing and mitigation solutions. Precise measurements to determine and document air flow, air pressure, pressure field extension, and more are routine practice at Square One. Unfortunately, many radon companies do not invest in the tools, training and techniques required to provide the most effective and efficient solutions to radon problems. Square One Radon was founded with the ideal of offering some of the most advanced, reliable, and proven testing and mitigation technologies in an affordable and practical solution for homeowners, businesses, schools, and other clients. Rob Hartop, Owner and Founder, brings eight years of experience in the radon industry to the Western Slope of Colorado along with his NRPP certifications in both radon testing and radon mitigation. Rob is also a member of the American Association of Radon Scientists and Technologists (AARST), spent over 12 years working in customer relations, has over four years experience in automotive and industrial fluid line fabrication, and holds a Bachelor of Business Adminnistration with concentrations in finance and economics.

"Square One Radon was professional, knowledgeable, reasonably priced, prompt, and did a beautiful job. The company's owner, Rob is the best. I would recommend his company enthusiastically and without any reservations. I'm a retired consumer-protection lawyer, so I know an outstanding company when I see one."

Pat T on January 2023

Fully certified and locally owned, Square One Radon offers full service radon testing, radon mitigation, crawlspace encapsulation, and new construction radon services. Square One stands apart from the competition by utilizing the most scientific and calculated approaches to providing radon testing and mitigation solutions. Precise measurements to determine and document air flow, air pressure, pressure field extension, and more are routine practice at Square One. Unfortunately, many radon companies do not invest in the tools, training and techniques required to provide the most effective and efficient solutions to radon problems. Square One Radon was founded with the ideal of offering some of the most advanced, reliable, and proven testing and mitigation technologies in an affordable and practical solution for homeowners, businesses, schools, and other clients. Rob Hartop, Owner and Founder, brings eight years of experience in the radon industry to the Western Slope of Colorado along with his NRPP certifications in both radon testing and radon mitigation. Rob is also a member of the American Association of Radon Scientists and Technologists (AARST), spent over 12 years working in customer relations, has over four years experience in automotive and industrial fluid line fabrication, and holds a Bachelor of Business Adminnistration with concentrations in finance and economics.

"Square One Radon was professional, knowledgeable, reasonably priced, prompt, and did a beautiful job. The company's owner, Rob is the best. I would recommend his company enthusiastically and without any reservations. I'm a retired consumer-protection lawyer, so I know an outstanding company when I see one."

Pat T on January 2023


Avatar for Stanton Engineering Solutions Inc.

Stanton Engineering Solutions Inc.

New on AngiNew on Angi
Approved Pro

Stanton Engineering Solutions Inc.

New on AngiNew on Angi
Approved Pro
20 years of experience
Free onsite estimate

Stanton Engineering Solutions, Inc. is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

Stanton Engineering Solutions, Inc. is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.


Avatar for RCPI Residential Commercial Property Inspections

RCPI Residential Commercial Property Inspections

4.98(
85
)

RCPI Residential Commercial Property Inspections

4.98(
85
)
Customers say: Super punctual
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers

10 % FOR ALL VETERANS.... This is a veteran-owned business RCPI Home Inspections aims to provide accurate and reliable residential/ commercial reports to our current and potential customers with a friendly demeanor. We empower the customer to properly evaluate the facts, prior to making a substantial investment on a facility or dwelling. We provide inspection services across Colorado. From Denver To Pueblo & East To West.

"Nate did an excellent and thorough job, finding important laws that compromised safety as well as cosmetic imperfections which could be improved.. he also took all the time needed to explain his findings verbally as well as in his extensive and detailed report.. he even suggested ways to increase the safety and efficiency regarding repairs. So very thorough and trustworthy!"

Cheryl B on March 2020

10 % FOR ALL VETERANS.... This is a veteran-owned business RCPI Home Inspections aims to provide accurate and reliable residential/ commercial reports to our current and potential customers with a friendly demeanor. We empower the customer to properly evaluate the facts, prior to making a substantial investment on a facility or dwelling. We provide inspection services across Colorado. From Denver To Pueblo & East To West.

"Nate did an excellent and thorough job, finding important laws that compromised safety as well as cosmetic imperfections which could be improved.. he also took all the time needed to explain his findings verbally as well as in his extensive and detailed report.. he even suggested ways to increase the safety and efficiency regarding repairs. So very thorough and trustworthy!"

Cheryl B on March 2020


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


Avatar for ACE RADON CORPORATION

ACE RADON CORPORATION

4.78(
299
)

ACE RADON CORPORATION

4.78(
299
)
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers

For 36 years, ACE Radon has earned a great reputation for Quality Radon Services at an affordable price. ACE utilizes cutting-edge technology exceeding National Radon Proficiency standards. ACE provides the most accurate and Certified testing methods, custom mitigation systems designed to provide the lowest possible radon levels and Air Purification Systems to provided relief for Allergies, Asthma and other lung problems. TEST FOR RADON, MITIGATE, IF NECESSARY AND PURIFY YOUR INDOOR AIR. RACE TO ACERADON.COM

"Outstanding service from Amanda who I contacted initially to Karl and Anthony who installed the radon system. My wife and I are extremely pleased. I would and have recommended Ace Radon to our friends and family. Thanks so much for everything."

Kenneth A on June 2023

For 36 years, ACE Radon has earned a great reputation for Quality Radon Services at an affordable price. ACE utilizes cutting-edge technology exceeding National Radon Proficiency standards. ACE provides the most accurate and Certified testing methods, custom mitigation systems designed to provide the lowest possible radon levels and Air Purification Systems to provided relief for Allergies, Asthma and other lung problems. TEST FOR RADON, MITIGATE, IF NECESSARY AND PURIFY YOUR INDOOR AIR. RACE TO ACERADON.COM

"Outstanding service from Amanda who I contacted initially to Karl and Anthony who installed the radon system. My wife and I are extremely pleased. I would and have recommended Ace Radon to our friends and family. Thanks so much for everything."

Kenneth A on June 2023


Avatar for All Property Maintenance

All Property Maintenance

4.83(
23
)

All Property Maintenance

4.83(
23
)
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers

Hello, My name is Mario Licata. I have been building, remodeling, cleaning and doing all around property maintenance since 1986. I am a master window cleaner, studied electrical theory for four years while I was an electrician. I love being a father and a husband but it doesn't pay well so I do these other jobs to pay the bills. I am an honest hardworking person. Over the years I have developed great relationships with other service professionals and that is why I am able to offer such a wide range of services to my clientele. However, rest assured, I am tooled and capable to take care of your work if one of my great service professionals is not able to attend to it. I have been a business owner since 1986 and I have grown and sold 2 small businesses in that time.

"Went well........they moved inside items carefully to get access, used ladders where needed, cleaned sills and outside frames and screens in addition to windows, stayed busy and tolerated my obnoxious ankle biter."

John C on May 2018

Hello, My name is Mario Licata. I have been building, remodeling, cleaning and doing all around property maintenance since 1986. I am a master window cleaner, studied electrical theory for four years while I was an electrician. I love being a father and a husband but it doesn't pay well so I do these other jobs to pay the bills. I am an honest hardworking person. Over the years I have developed great relationships with other service professionals and that is why I am able to offer such a wide range of services to my clientele. However, rest assured, I am tooled and capable to take care of your work if one of my great service professionals is not able to attend to it. I have been a business owner since 1986 and I have grown and sold 2 small businesses in that time.

"Went well........they moved inside items carefully to get access, used ladders where needed, cleaned sills and outside frames and screens in addition to windows, stayed busy and tolerated my obnoxious ankle biter."

John C on May 2018


Avatar for Eco Tech Environmental Inc.

Eco Tech Environmental Inc.

5.00(
7
)

Eco Tech Environmental Inc.

5.00(
7
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Our goal at ETE is to provide quality services and value to our clients at competitive rates. As a team of excellent people we strive to exceed our customers’ expectations every day. With over 30 years of knowledge and experience combined, the owners and staff of Eco Tech Environmental assure that your abatement experience, as overwhelming as may seem, will run as pleasant as can be.

"Eco Tech did a great job removing tiles from two different rooms in my basement. They provided a clear estimate and completed the work on time. When I had questions they were very responsive. I would certainly hire them again."

Walter G on September 2019

Our goal at ETE is to provide quality services and value to our clients at competitive rates. As a team of excellent people we strive to exceed our customers’ expectations every day. With over 30 years of knowledge and experience combined, the owners and staff of Eco Tech Environmental assure that your abatement experience, as overwhelming as may seem, will run as pleasant as can be.

"Eco Tech did a great job removing tiles from two different rooms in my basement. They provided a clear estimate and completed the work on time. When I had questions they were very responsive. I would certainly hire them again."

Walter G on September 2019


Avatar for AIR QUALITY CONTROL AGENCY INC

AIR QUALITY CONTROL AGENCY INC

4.33(
18
)

AIR QUALITY CONTROL AGENCY INC

4.33(
18
)
Customers say: Super punctual
37 years of experience

SWAT Environmental has installed over 50,000 radon systems throughout the country. We are America’s largest radon abatement company, and we have more certified technicians on staff than any other competitor. The experienced staff at SWAT Environmental leads the industry in removing radon from homes, schools, apartment buildings, condominiums, commercial and government buildings. SWAT Environmental is a trusted partner of some of the largest real estate firms in the country, and we lead the industry in quality and overall value. All of our technicians go through a rigorous training program that prepares them to make your home or office safe from the dangers of radon. When you have a problem with radon, you can trust the experienced professionals at SWAT Environmental. 

SWAT Environmental has installed over 50,000 radon systems throughout the country. We are America’s largest radon abatement company, and we have more certified technicians on staff than any other competitor. The experienced staff at SWAT Environmental leads the industry in removing radon from homes, schools, apartment buildings, condominiums, commercial and government buildings. SWAT Environmental is a trusted partner of some of the largest real estate firms in the country, and we lead the industry in quality and overall value. All of our technicians go through a rigorous training program that prepares them to make your home or office safe from the dangers of radon. When you have a problem with radon, you can trust the experienced professionals at SWAT Environmental. 

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Radon Detection and Reduction questions, answered by experts

Services test for allergens, mold, VOCs, and carbon monoxide levels to ensure a healthy indoor environment.

If your home has a sump pit, you can integrate it with a radon mitigation system. You can accomplish this by sealing the pump cover with an airtight lid that accommodates radon vent pipes and sump pump hoses. This allows the vent pipe to redirect the radon gas outside of your home.

What is radon? It’s a radioactive gas that naturally occurs in the ground, forming as uranium and thorium decay. It has no color or odor, so you don’t know if it’s seeping into your building’s foundation. Regular exposure to radon gas increases your chances of suffering from lung cancer. Radon testing measures the air inside your house for the presence of radon gas. If detected, the test will measure the severity of radon levels in your home’s air.

Costs for radon detection services typically range from $150 to $250, depending on the testing method and whether a professional assessment is required.

Costs depend on test type, home size, number of testing locations, and whether follow-up testing is required.

The Olathe, CO 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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