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

*The Angi rating for Radon Detection And Reduction companies in Corvallis, 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 Corvallis, 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 04, 2025

Find Radon detection and reduction specialists in Corvallis

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 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
355 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 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
65 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

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Radon Detection and Reduction questions, answered by experts

You can buy DIY radon test kits from a home improvement store and conduct radon testing, but these tests are often inaccurate. No matter the result, you should supplement DIY testing with professional radon detection and analysis. DIYers only have access to passive radon tests, which aren’t as reliable as active tests that professionals use. Plus, it’s very easy for DIYers to make mistakes during testing, leading to inaccurate results. If you’re moving into a new home, have concerns about radon, or are due for an updated test, hire a professional. 

A radon test has no effect on humans—only the radon in the air does. The test does not redistribute the radon that is already present so yes, it’s safe to be around the testing kit even if it isn’t safe to be in the room itself. The test absorbs and measures the radon, but doesn't absorb enough of it to make the room any safer.

Yes, radon testing is absolutely necessary if you suspect the presence of this hazardous gas, and the Environmental Protection Agency (EPA) recommends testing for all homes in the country. Radon is a pervasive natural gas that can leak through your home’s foundation and seep into the living areas. Unfortunately, the gas is highly carcinogenic and is the second leading cause of lung cancer. Radon testing is crucial for keeping you and your family safe from harm, so hire a radon mitigation specialist to test your home if you suspect its presence in your home.

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.

You should have a professional test for radon every two to five years. A good rule of thumb is to get testing done every five years if you’ve never had an issue before and every two years if you have. You may also want to schedule testing if you notice symptoms of radon exposure or if you do intermittent DIY radon testing and notice changes in your levels between tests. If you have an active radon monitor, you can schedule testing if you notice levels increasing over time.

The Corvallis, OR homeowners’ guide to radon detection and reduction services

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