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Avatar for RemediH2O

RemediH2O

New on AngiNew on Angi
Approved Pro

RemediH2O

New on AngiNew on Angi
Approved Pro
18 local quotes requested
Free onsite estimate

Our 5-star disaster response experts provide on-demand emergency services including flood response and restoration, water damage restoration, fire and smoke damage restoration, and mold remediation to Colorado residents in the Roaring Fork Valley and beyond. We're a locally owned and operated team of certified technicians who provide residential and commercial restoration including insurance assistance for an easy, stress-free experience.

Our 5-star disaster response experts provide on-demand emergency services including flood response and restoration, water damage restoration, fire and smoke damage restoration, and mold remediation to Colorado residents in the Roaring Fork Valley and beyond. We're a locally owned and operated team of certified technicians who provide residential and commercial restoration including insurance assistance for an easy, stress-free experience.


Avatar for Square One Radon, LLC

Square One Radon, LLC

5.00(
38
)
Approved Pro

Square One Radon, LLC

5.00(
38
)
Approved Pro
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!

"Rob & his team were professional, friendly, respectful, neat, informative, communicative & did a great job! Fantastic crew & my radon level is way down. I could actually smell a difference in my home as soon as the work was completed, which only took one day in my 1700 sq ft house. 10 Stars to Square One!!!"

Darcy B on September 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!

"Rob & his team were professional, friendly, respectful, neat, informative, communicative & did a great job! Fantastic crew & my radon level is way down. I could actually smell a difference in my home as soon as the work was completed, which only took one day in my 1700 sq ft house. 10 Stars to Square One!!!"

Darcy B on September 2025


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
17 local quotes requested

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
13 local quotes requested
20 years of experience

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 All Colorado Radon Mitigation Inc

All Colorado Radon Mitigation Inc

4.97(
38
)
Approved Pro

All Colorado Radon Mitigation Inc

4.97(
38
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
26 local quotes requested

Family owned and operated Radon Mitigation Company. We design and install custom mitigation systems to fit your house. Guaranteed to reduce radon levels to an acceptable level while being aesthetically pleasing to the eye. No obligation site visits and estimates. Check, CC's and Financing available upon request.

"All Colorado Radon Mitigation, Inc. is an incredible company to work with. They perform quality work, and they are truly friendly and professional. The system that they installed was straightforward, but the work was top-notch. Highly recommend!"

Seth N on July 2024

Family owned and operated Radon Mitigation Company. We design and install custom mitigation systems to fit your house. Guaranteed to reduce radon levels to an acceptable level while being aesthetically pleasing to the eye. No obligation site visits and estimates. Check, CC's and Financing available upon request.

"All Colorado Radon Mitigation, Inc. is an incredible company to work with. They perform quality work, and they are truly friendly and professional. The system that they installed was straightforward, but the work was top-notch. Highly recommend!"

Seth N on July 2024



Rocky Mountain Radon Mitigation

No reviews yet

Rocky Mountain Radon Mitigation

No reviews yet

Rocky Mountain Radon Mitigation LLC is a locally owned & operated company servicing all four corners of Colorado. We are NRPP certified in radon testing and mitigation. We are committed to increasing awareness of radon and its health risks, as well educating our customers on the appropriate methods to reduce risk in their homes, schools, or businesses.

Rocky Mountain Radon Mitigation LLC is a locally owned & operated company servicing all four corners of Colorado. We are NRPP certified in radon testing and mitigation. We are committed to increasing awareness of radon and its health risks, as well educating our customers on the appropriate methods to reduce risk in their homes, schools, or businesses.



AAA NOVA commercial and residential inspections

No reviews yet

AAA NOVA commercial and residential inspections

No reviews yet

We service the Colorado front range area for commercial and residential inspections, family owned, licensed and insured. To real estate transactions to one year homeowners inspections, we do it all. Over 20 years of experience in commercial and residential building, maintaining and inspections. All reports are given via email. We provide radon, video sewer scope, thermal imaging, ect. Give us a call to learn more about AAANova and for a quote!

We service the Colorado front range area for commercial and residential inspections, family owned, licensed and insured. To real estate transactions to one year homeowners inspections, we do it all. Over 20 years of experience in commercial and residential building, maintaining and inspections. All reports are given via email. We provide radon, video sewer scope, thermal imaging, ect. Give us a call to learn more about AAANova and for a quote!


Certified Professionals with over 23 years experience. We specialize in the mitigation and environmental clean up of water, flood, mold, and much more. Family owned and operated.

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Radon Detection and Reduction questions, answered by experts

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.

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

Mitigation reduces radon levels, protecting your health and complying with safety standards.

Ideally, no one will live in a house with elevated radon levels, as prolonged exposure increases the risk of serious health issues like lung cancer. However, homes with radon can be made safe through mitigation systems, such as active soil depressurization. Testing for radon regularly and addressing high levels helps ensure a safe living environment.

Radon enters your home when warm air begins to rise and exits through the roof, creating a vacuum that pulls cooler air from under the foundation. Part of that air is radon, which is an invisible, odorless gas that develops naturally when radioactive particles are deep within the ground. Those particles usually come from decaying matter in soil and rocks.

The Mesa, 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.