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

*The Angi rating for Radon Detection And Reduction companies in Alsea, 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 Alsea, 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 November 16, 2025

Find Radon detection and reduction specialists in Alsea

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
409 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
72 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 TerraFirma Foundation Systems

TerraFirma Foundation Systems

5.00(
7
)

TerraFirma Foundation Systems

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

Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.

"They were great. They had a great communication. They exceeded our expectations."

Rachel K on February 2021

Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.

"They were great. They had a great communication. They exceeded our expectations."

Rachel K on February 2021

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

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Radon Detection and Reduction questions, answered by experts

Keeping radon from getting into your home is much better than having to get rid of it once it's already indoors. While there may not be a way to fully prevent radon from getting into your home, there are things you can do to reduce the gas's ability to enter. 

Sealing foundation cracks and openings can help keep the gas from seeping inside. Improving air flow, such as by opening windows, can also be helpful. If you're building your home from scratch, talk to your contractor about using radon-resistant construction to keep the gas out.

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.

In most states, radon testing companies don’t need to be licensed or certified by the state, but the companies that analyze the test results and develop radon mitigation protocols do. You should choose a radon testing company that suits your needs, but before hiring a mitigation specialist, check our state licensing tool to make sure the company is properly certified.

There are steps you can take as a homeowner to remediate radon yourself. While a radon reduction professional can make the biggest impact in your home, you can make efforts to improve radon levels on your own by sealing cracks, increasing ventilation, and testing for radon regularly.

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.

The Alsea, 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.

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