Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in Tangent, OR

Enter your zip and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in Tangent, OR?

Select your specific project to find the pro for you.

Verified Reviews for Radon Detection And Reduction pros in Tangent, OR

*The Angi rating for Radon Detection And Reduction companies in Tangent, OR 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 Tangent, OR 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 Tangent

Avatar for John's Waterproofing Co.

John's Waterproofing Co.

4.74(
47
)
•Approved Pro

John's Waterproofing Co.

4.74(
47
)
•Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
346 local quotes requested

John's Waterproofing Co. is the premier waterproofing company serving in Oregon and southern Washington for almost 4 decades. We Specialize in Basement and Crawlspace Waterproofing and Repairs, we offer free inspections and estimates along with caring customer service. Contact our office today for your waterproofing needs!

"No."

Tracy W on January 2025

John's Waterproofing Co. is the premier waterproofing company serving in Oregon and southern Washington for almost 4 decades. We Specialize in Basement and Crawlspace Waterproofing and Repairs, we offer free inspections and estimates along with caring customer service. Contact our office today for your waterproofing needs!

"No."

Tracy W on January 2025

Avatar for Nordic Service Group, LLC

Nordic Service Group, LLC

5.00(
2
)
•Approved Pro

Nordic Service Group, LLC

5.00(
2
)
•Approved Pro
44 local quotes requested
1 years of experience

Nordic Home Inspection 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 mindful of our customers' interests and make their concerns the foundation of our business.

"Chris was fantastic to talk to about what he checks for during the inspection and what i should expect to see on his report. Chris was on time, incredibly thorough and detailed. I highly recommend him to anyone looking for a great home inspector. "

Arthur K on June 2025

Nordic Home Inspection 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 mindful of our customers' interests and make their concerns the foundation of our business.

"Chris was fantastic to talk to about what he checks for during the inspection and what i should expect to see on his report. Chris was on time, incredibly thorough and detailed. I highly recommend him to anyone looking for a great home inspector. "

Arthur K on June 2025

Avatar for Alpha Environmental Services Inc

Alpha Environmental Services Inc

4.72(
109
)
•Approved Pro

Alpha Environmental Services Inc

4.72(
109
)
•Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
64 local quotes requested

We are a residential and commercial environmental consulting and remediation company. Serving the greater Portland, OR, area for over 20 years, we have the experience and knowledge to handle just about anything. We offer a variety of services from mold assessment and remediation to radon testing and mitigation and tank services. We provide project oversight and technical review for projects big and small. This includes site analysis, mold assessment, and the remediation of toxins. We also offer a full range of heating oil tank services, from checking underground leaks to installing above ground storage tanks (ASTs). Our residential and commercial services include: • Environmental consulting and remediation • Environmental site assessment • Groundwater remediation • Habitat restoration • Mold testing and removal • Asbestos, radon and lead testing and inspection • Dry well sampling • Phase I & II environmental site assessments • Underground tank sampling • Vapor mitigation systems Environmental risk is an important and complex issue. Whether your concern is toxic mold or radon testing, Alpha Environmental Services can develop an environmental or engineering due-diligence solution that fits your individual needs. We are fully licensed and committed to your environmental needs. Call today for a free estimate and to schedule an appointment.

"I hired Alpha Environmental to do a tank search. They were punctual and helpful, beyond the scope of their visit. They're easy to work with and they accommodated unusual invoicing request."

Ramona M on June 2025

We are a residential and commercial environmental consulting and remediation company. Serving the greater Portland, OR, area for over 20 years, we have the experience and knowledge to handle just about anything. We offer a variety of services from mold assessment and remediation to radon testing and mitigation and tank services. We provide project oversight and technical review for projects big and small. This includes site analysis, mold assessment, and the remediation of toxins. We also offer a full range of heating oil tank services, from checking underground leaks to installing above ground storage tanks (ASTs). Our residential and commercial services include: • Environmental consulting and remediation • Environmental site assessment • Groundwater remediation • Habitat restoration • Mold testing and removal • Asbestos, radon and lead testing and inspection • Dry well sampling • Phase I & II environmental site assessments • Underground tank sampling • Vapor mitigation systems Environmental risk is an important and complex issue. Whether your concern is toxic mold or radon testing, Alpha Environmental Services can develop an environmental or engineering due-diligence solution that fits your individual needs. We are fully licensed and committed to your environmental needs. Call today for a free estimate and to schedule an appointment.

"I hired Alpha Environmental to do a tank search. They were punctual and helpful, beyond the scope of their visit. They're easy to work with and they accommodated unusual invoicing request."

Ramona M on June 2025

Avatar for Northwest Hazmat

Northwest Hazmat

4.83(
6
)

Northwest Hazmat

4.83(
6
)
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

"No Mold" is a division of NorthWest Hazmat, a trusted locally owned and operated company founded in 2000. We specialize in identification and remediation of all kinds of mold, and will work with you, to provide the most cost effective solution to keep your family safe. We work with insurance claims when possible, to ensure you can stay healthy & happy & pride ourselves on being fast, fair and professional. We want our customers to be 100% satisfied with our service.

"No Mold" is a division of NorthWest Hazmat, a trusted locally owned and operated company founded in 2000. We specialize in identification and remediation of all kinds of mold, and will work with you, to provide the most cost effective solution to keep your family safe. We work with insurance claims when possible, to ensure you can stay healthy & happy & pride ourselves on being fast, fair and professional. We want our customers to be 100% satisfied with our service.

Avatar for FASTRAK OREGON ASBESTOS & MOLD INSPECTIONS LLC

FASTRAK OREGON ASBESTOS & MOLD INSPECTIONS LLC

5.00(
2
)

FASTRAK OREGON ASBESTOS & MOLD INSPECTIONS LLC

5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Free phone consultation for Mold and Asbestos. On site surveys 40 Yrs. inspections for Asbestos and mold Asbestos surveys are required by EPA, DEQ and your regional air quality agencies on all homes built or remodeled prier to 2004 by a licensed and certified inspector FASTRAK IS LICENCED AND CERTIFIED

Free phone consultation for Mold and Asbestos. On site surveys 40 Yrs. inspections for Asbestos and mold Asbestos surveys are required by EPA, DEQ and your regional air quality agencies on all homes built or remodeled prier to 2004 by a licensed and certified inspector FASTRAK IS LICENCED AND CERTIFIED

Inspections Unlimited Inc.

No reviews yet

Inspections Unlimited Inc.

No reviews yet
36 years of experience

HELPING YOU MAKE INFORMED DECISIONS™ Serving Home Buyers, Sellers, Investors, Owners, Real Estate Agents, and other Real Estate Industry associates with Professional Inspection Services since 1989. Our inspectors have over 25 years of inspection expertise to draw from in Helping You Make Informed Decisionstm on your next property investment.

HELPING YOU MAKE INFORMED DECISIONS™ Serving Home Buyers, Sellers, Investors, Owners, Real Estate Agents, and other Real Estate Industry associates with Professional Inspection Services since 1989. Our inspectors have over 25 years of inspection expertise to draw from in Helping You Make Informed Decisionstm on your next property investment.

C J Hansen Co Inc

4.42(
12
)

C J Hansen Co Inc

4.42(
12
)
Customers say: Quick response
77 years of experience

Financing available. See website for additional service areas. Locally owned.

"When scheduling service for an air-to-water boiler, I was told I called "exactly the right people". The tech got here and said they almost never see these... Charged over $300 for an hour's looking around (no actual service) and drive time. So, I feel pretty seriously misled, and I still have to find someone to service the boiler. They continue to be unwilling to split the bill."

Andy A on April 2023

Financing available. See website for additional service areas. Locally owned.

"When scheduling service for an air-to-water boiler, I was told I called "exactly the right people". The tech got here and said they almost never see these... Charged over $300 for an hour's looking around (no actual service) and drive time. So, I feel pretty seriously misled, and I still have to find someone to service the boiler. They continue to be unwilling to split the bill."

Andy A on April 2023

Avatar for Environmental Works LLC

Environmental Works LLC

4.61(
67
)

Environmental Works LLC

4.61(
67
)
Customers say: Quality work
17 years of experience

We're innovative, hard working and we get the job done right from the science to the site. From our administration team, to the project managers and field crews, our employees are highly skilled and thoroughly trained professionals. We specialize in air quality testing and mitigation (Radon), underground tank decommissioning, sewer inspection & repair, plumbing services, directional drilling, environmental site assessments and environmental restoration.

"I hired Environmental Works on the recommendation of a co-worker. Not only was it the least expensive of the three bids I received but it was also the only company that offered a lifetime guarantee on its work. The entire installation of a radon mitigation system in my home took less than six hours. The company guarantees that its radon mitigation system can keep radon levels below 2.7 pCi/L. A three-month radon monitoring test, completed ten months after the installation of my mitigation system, indicated radon levels at 1.4 pCi/L. I am very pleased with the work that was performed at my home."

Ken R on March 2020

We're innovative, hard working and we get the job done right from the science to the site. From our administration team, to the project managers and field crews, our employees are highly skilled and thoroughly trained professionals. We specialize in air quality testing and mitigation (Radon), underground tank decommissioning, sewer inspection & repair, plumbing services, directional drilling, environmental site assessments and environmental restoration.

"I hired Environmental Works on the recommendation of a co-worker. Not only was it the least expensive of the three bids I received but it was also the only company that offered a lifetime guarantee on its work. The entire installation of a radon mitigation system in my home took less than six hours. The company guarantees that its radon mitigation system can keep radon levels below 2.7 pCi/L. A three-month radon monitoring test, completed ten months after the installation of my mitigation system, indicated radon levels at 1.4 pCi/L. I am very pleased with the work that was performed at my home."

Ken R on March 2020

Showing 1-10 of 12
Radon Detection and Reduction questions, answered by experts

Yes, most services include testing the generator to ensure functionality. Confirm with your provider.

Professional radon detection involves placing test kits in the lowest lived-in level of the house for a period, usually 48 hours to several months, followed by lab analysis of collected data.

It is worthwhile to get radon testing done, especially if you haven’t in the past and don’t have active radon monitoring set up in your home. According to the American Lung Association, radon is a potential issue in all states, and testing is the best way to determine if it’s a current problem in your home. Radon testing includes professional tests that determine ongoing radon levels in your property, and it usually includes a mitigation protocol to help you decide what measures to take to protect your home and household members.

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 is present almost everywhere but, like sunlight, the concentration levels and how often you are exposed to it have a large part to play in just how dangerous it is. There are levels of radon that are acceptable inside a house, but above a certain limit, radon becomes a serious radioactive hazard that is a known cause of lung cancer. In fact, radon exposure is the number two leading cause of lung cancer (after smoking).

The Tangent, OR 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