Top-rated radon detection and reduction specialists.

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

There are 5 highly-rated local radon detection and reduction specialists.

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

Select your specific project to find the pro for you.

Find Radon detection and reduction specialists in Columbia City

Avatar for USA Water Restoration

USA Water Restoration

5305 NE 121st Ave Ste 906
New on AngiNew on Angi
Approved Pro

USA Water Restoration

5305 NE 121st Ave Ste 906
New on AngiNew on Angi
Approved Pro
26 local quotes requested
5 years of experience

****24/7 Emergency Response****CALL US AT 360-800-5322 ***WE WORK WITH ALL MAJOR INSURANCE CARRIERS*** USA Restoration is a premier service provider specializing in water damage restoration, mold remediation, and sewage cleanup services. With a strong commitment to quality and efficiency, we strive to restore not just homes and businesses, but peace of mind. Our team of highly trained professionals is equipped with the latest technology to handle any water-related disaster. We understand the urgency and the stress that comes with such situations, and we are dedicated to providing prompt and reliable services to mitigate the damage and restore your property to its pre-loss condition. In addition to water damage restoration, we are experts in mold remediation. We ensure the complete removal of harmful mold, preventing potential health risks and further property damage. Our sewage cleanup services are designed to handle the most challenging situations, ensuring a safe and clean environment. At USA Restoration, we are more than just a service provider; we are your trusted partner in times of need.

****24/7 Emergency Response****CALL US AT 360-800-5322 ***WE WORK WITH ALL MAJOR INSURANCE CARRIERS*** USA Restoration is a premier service provider specializing in water damage restoration, mold remediation, and sewage cleanup services. With a strong commitment to quality and efficiency, we strive to restore not just homes and businesses, but peace of mind. Our team of highly trained professionals is equipped with the latest technology to handle any water-related disaster. We understand the urgency and the stress that comes with such situations, and we are dedicated to providing prompt and reliable services to mitigate the damage and restore your property to its pre-loss condition. In addition to water damage restoration, we are experts in mold remediation. We ensure the complete removal of harmful mold, preventing potential health risks and further property damage. Our sewage cleanup services are designed to handle the most challenging situations, ensuring a safe and clean environment. At USA Restoration, we are more than just a service provider; we are your trusted partner in times of need.


Avatar for Armored Restoration

Armored Restoration

P.O. Box 994
4.80(
20
)
Approved Pro

Armored Restoration

P.O. Box 994
4.80(
20
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
52 local quotes requested

We are a locally owned and operated company with over 20 years of industry experience; specializing in Mold Remediation and Water Damage Mitigation services including Water Extraction, Pump Outs and more. We pride ourselves on the quality of our work as well as our commitment to outstanding results and superior customer service. We look forward to building lasting relationships with our clients and guarantee your satisfaction! https://armoredrestoration.com/

"quick and easy"

Jackson R on February 2024

We are a locally owned and operated company with over 20 years of industry experience; specializing in Mold Remediation and Water Damage Mitigation services including Water Extraction, Pump Outs and more. We pride ourselves on the quality of our work as well as our commitment to outstanding results and superior customer service. We look forward to building lasting relationships with our clients and guarantee your satisfaction! https://armoredrestoration.com/

"quick and easy"

Jackson R on February 2024



Avatar for Alpha Environmental Services Inc

Alpha Environmental Services Inc

11080 SW Allen Blvd
4.70(
116
)
Approved Pro

Alpha Environmental Services Inc

11080 SW Allen Blvd
4.70(
116
)
Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% 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 Nordic Service Group, LLC

Nordic Service Group, LLC

PO Box 2051
5.00(
2
)
Approved Pro

Nordic Service Group, LLC

PO Box 2051
5.00(
2
)
Approved Pro
53 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.

201 Airport Road
4.74(
47
)
Approved Pro

John's Waterproofing Co.

201 Airport Road
4.74(
47
)
Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
405 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 Rutman Restoration

Rutman Restoration

15460 Southwest Rock Of Ages Road
5.00(
1
)

Rutman Restoration

15460 Southwest Rock Of Ages Road
5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Rutman Restoration is a licensed, bonded, and insured property restoration company serving McMinnville, Salem, Portland, and surrounding Oregon areas. We specialize in water damage restoration, mold remediation, fire damage cleanup, crawlspace odor removal, vapor barrier replacement, and animal-related contamination. Our IICRC-certified technicians provide 24/7 emergency response with fast, professional service. We handle insurance-covered restoration from start to finish, including documentation and direct insurance communication. Whether it’s a flooded crawlspace, black mold, smoke damage, or musty odors, Rutman Restoration delivers trusted, high-quality results. Fully CCB-compliant, locally owned, and family-operated. We work directly with homeowners and adjusters to simplify the claims process and maximize coverage. Our team uses commercial-grade drying, dehumidifying, and air scrubbing equipment to ensure full mitigation and long-term protection.

"I highly recommend David and his company, Rutman Restorations. I had rodents in the crawlspace of my home and the insulation and vapor barrier needed to be removed and replaced. This was no small task, as I have a single story home which has a larger footprint than many two story homes. David and I agreed to an excellent price and timeline. At first I was a little overwhelmed because I could see this was going to be an all hands on deck process. David coordinated work with Summit Pest company regarding the removal of the rodents and even spoke with the HVAC company when we discovered water in one of the ducts. (Which has now been addressed by the HVAC company that installed the A/C). David and his crew went to work right away removing old contaminated insulation and then sprayed the crawlspace with an antimicrobial solution before installing the new vapor barrier and insulation. David always kept me informed as the work progressed. I was happy to see they were using respirators, specialized suits and other safety equipment during the process. The crew worked diligently, had a great sense of humor, they were respectful and kept a positive attitude the whole time. I’ve owned other homes, but this is the first time I’ve ever been involved in the restoration of a crawlspace. I knew I was in good hands with David, Nico, Ben, Nayla and their great crew. Thank you for all your hard work! Kudos to all of you!"

Elaine C on July 2025

Rutman Restoration is a licensed, bonded, and insured property restoration company serving McMinnville, Salem, Portland, and surrounding Oregon areas. We specialize in water damage restoration, mold remediation, fire damage cleanup, crawlspace odor removal, vapor barrier replacement, and animal-related contamination. Our IICRC-certified technicians provide 24/7 emergency response with fast, professional service. We handle insurance-covered restoration from start to finish, including documentation and direct insurance communication. Whether it’s a flooded crawlspace, black mold, smoke damage, or musty odors, Rutman Restoration delivers trusted, high-quality results. Fully CCB-compliant, locally owned, and family-operated. We work directly with homeowners and adjusters to simplify the claims process and maximize coverage. Our team uses commercial-grade drying, dehumidifying, and air scrubbing equipment to ensure full mitigation and long-term protection.

"I highly recommend David and his company, Rutman Restorations. I had rodents in the crawlspace of my home and the insulation and vapor barrier needed to be removed and replaced. This was no small task, as I have a single story home which has a larger footprint than many two story homes. David and I agreed to an excellent price and timeline. At first I was a little overwhelmed because I could see this was going to be an all hands on deck process. David coordinated work with Summit Pest company regarding the removal of the rodents and even spoke with the HVAC company when we discovered water in one of the ducts. (Which has now been addressed by the HVAC company that installed the A/C). David and his crew went to work right away removing old contaminated insulation and then sprayed the crawlspace with an antimicrobial solution before installing the new vapor barrier and insulation. David always kept me informed as the work progressed. I was happy to see they were using respirators, specialized suits and other safety equipment during the process. The crew worked diligently, had a great sense of humor, they were respectful and kept a positive attitude the whole time. I’ve owned other homes, but this is the first time I’ve ever been involved in the restoration of a crawlspace. I knew I was in good hands with David, Nico, Ben, Nayla and their great crew. Thank you for all your hard work! Kudos to all of you!"

Elaine C on July 2025


Avatar for Octopus Project Management LLC

Octopus Project Management LLC

12219 Sw Main St
4.77(
22
)

Octopus Project Management LLC

12219 Sw Main St
4.77(
22
)
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers

Octopus Project Management LLC. is a Disaster Reconstruction firm focused on mitigation and rebuilding of residential and commercial buildings undergoing the restoration claims process. We are General contractors able to take on a multitude of different types of home projects. our project minimum is around $350 plus materials as a standard trip charge and increases hourly for smaller projects. Estimates are free and can typically be provided same day.

"Amazing customer service, did exactly what I needed done!"

Sidney S on June 2025

Octopus Project Management LLC. is a Disaster Reconstruction firm focused on mitigation and rebuilding of residential and commercial buildings undergoing the restoration claims process. We are General contractors able to take on a multitude of different types of home projects. our project minimum is around $350 plus materials as a standard trip charge and increases hourly for smaller projects. Estimates are free and can typically be provided same day.

"Amazing customer service, did exactly what I needed done!"

Sidney S on June 2025


Avatar for Northwest Hazmat

Northwest Hazmat

36 West Q Street
4.83(
6
)

Northwest Hazmat

36 West Q Street
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 Gorge Quality Home Inspection

Gorge Quality Home Inspection

.
5.00(
3
)

Gorge Quality Home Inspection

.
5.00(
3
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Gorge Quality Home Inspection gorgequaulityhomeinspection.com offers unbiased, dependable, and non-invasive home inspection services and radon testing to the Columbia River Gorge and the greater Portland and Vancouver metro areas. We strive to be an asset to every client who comes our way, adhering to InterNACHI’s excellent Standards of Practice so that the quality of our service is never in question. We don’t settle for a run of the mill home inspection, and neither should you when you contract with us to perform a home inspection, you’ll enjoy flexible scheduling, top quality customer service, and the most accurate home inspection available. Safety should always be a priority, and we’ll work diligently to make sure that your home is safe and sound, meticulously assessing even the most minute details to check for dangerous defects. We go the extra mile for our clients and do everything we can to take the stress out of your experience. Gorge Quality Home Inspection is a veteran owned and operated business. Greg Felten takes great pride in putting out a consistently high-quality product, eliminating uncertainty and stress by providing a friendly and knowledgeable service that is centered around the success of every client. One of Greg’s primary motivators for doing home inspection work is being able to play an important role in taking care of the people in our local communities. This of course includes prospective newcomers to the area because buying a home is a difficult process, no matter who you are or where you come from.

"It was great. They were a ten out of ten."

John D on May 2022

Gorge Quality Home Inspection gorgequaulityhomeinspection.com offers unbiased, dependable, and non-invasive home inspection services and radon testing to the Columbia River Gorge and the greater Portland and Vancouver metro areas. We strive to be an asset to every client who comes our way, adhering to InterNACHI’s excellent Standards of Practice so that the quality of our service is never in question. We don’t settle for a run of the mill home inspection, and neither should you when you contract with us to perform a home inspection, you’ll enjoy flexible scheduling, top quality customer service, and the most accurate home inspection available. Safety should always be a priority, and we’ll work diligently to make sure that your home is safe and sound, meticulously assessing even the most minute details to check for dangerous defects. We go the extra mile for our clients and do everything we can to take the stress out of your experience. Gorge Quality Home Inspection is a veteran owned and operated business. Greg Felten takes great pride in putting out a consistently high-quality product, eliminating uncertainty and stress by providing a friendly and knowledgeable service that is centered around the success of every client. One of Greg’s primary motivators for doing home inspection work is being able to play an important role in taking care of the people in our local communities. This of course includes prospective newcomers to the area because buying a home is a difficult process, no matter who you are or where you come from.

"It was great. They were a ten out of ten."

John D on May 2022

Showing 1-10 of 40
Radon Detection and Reduction questions, answered by experts

You'll need to test your home for radon after installing the mitigation system, then again every two years. If radon remains elevated, contact a licensed radon professional, either the contractor who installed the system or a different one, and have them evaluate the system. They may need to make some changes to improve its effectiveness and performance.

No level of radon is technically safe, but because it’s everywhere—even in the air outside—it’s impossible to avoid entirely. Instead, the Environmental Protection Agency encourages taking preventative measures if the levels of radon in your home rise above 2 pCi/L. (For reference, the average radon level in homes across the United States is 1.3 pCi/L.

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.

A professional indoor air quality inspection takes anywhere from one to three hours, depending on the size of your home and the number of necessary samples. After the test, the specialist will discuss the findings, but you won’t get a full written report for 2 to 10 days, though you can ask your pro to expedite the process, if needed. 

Radon testing costs around $450 on average, but you could pay between $150 and $800 for testing, depending on a few factors. The size of your house is one of the most significant cost factors, as your radon professional will have to set up additional tests for homes with larger footprints. The type of test can also have an impact on the cost. Finally, some radon testing companies will include a recommended protocol for radon mitigation, while others might charge $50 to $100 extra.

The Columbia City, 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.

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"