Top-rated radon detection and reduction specialists.

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

There are 9 highly-rated local radon detection and reduction specialists.

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

Select your specific project to find the pro for you.

Find Radon detection and reduction specialists in Gresham

Avatar for USA Water Restoration

USA Water Restoration

7471 S 13th St
New on AngiNew on Angi
Approved Pro

USA Water Restoration

7471 S 13th St
New on AngiNew on Angi
Approved Pro
21 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 Water 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 Water 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 Water 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 Water Restoration, we are more than just a service provider; we are your trusted partner in times of need.


Avatar for Oregon Restoration Co.

Oregon Restoration Co.

17750 SW Upper Boones Ferry Rd
4.71(
147
)
Approved Pro

Oregon Restoration Co.

17750 SW Upper Boones Ferry Rd
4.71(
147
)
Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
20 local quotes requested

Oregon Restoration is your local, independent restoration company, proudly serving the Portland Metro and all of Central Oregon from our offices in Portland, Bend and Eugene. We specialize in water damage restoration, mold removal, fire and smoke remediation, asbestos and lead abatement, as well as complete repair and reconstruction. Our IICRC-certified team ensures seamless service from start to finish, so you can trust us to handle every step of the restoration process. Available 24/7 for emergencies, we’re here to protect and restore your home when it matters most.

"Ambrosio was friendly and kind, made a thorough search through the attic and rooms of the house to evaluate the roof leak and resulting mold, and gave a detailed estimate of all the work that would be involved in remediation. Didn't charge for gas or estimate. We since haven't been able to get in contact for next steps, but appreciated the timely and thorough response for our initial request for evaluation."

Hannah F on July 2022

Oregon Restoration is your local, independent restoration company, proudly serving the Portland Metro and all of Central Oregon from our offices in Portland, Bend and Eugene. We specialize in water damage restoration, mold removal, fire and smoke remediation, asbestos and lead abatement, as well as complete repair and reconstruction. Our IICRC-certified team ensures seamless service from start to finish, so you can trust us to handle every step of the restoration process. Available 24/7 for emergencies, we’re here to protect and restore your home when it matters most.

"Ambrosio was friendly and kind, made a thorough search through the attic and rooms of the house to evaluate the roof leak and resulting mold, and gave a detailed estimate of all the work that would be involved in remediation. Didn't charge for gas or estimate. We since haven't been able to get in contact for next steps, but appreciated the timely and thorough response for our initial request for evaluation."

Hannah F on July 2022



Avatar for PNW Mold Masters

PNW Mold Masters

Located In:
5.00(
6
)
Approved Pro

PNW Mold Masters

Located In:
5.00(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
52 local quotes requested

PNW Mold Masters: Fast and Easy Home Mold & Air Contaminant Testing Ensure the safety and air quality of your home with PNW Mold Masters. We specialize in quick, reliable testing for mold and other air contaminants, providing you with peace of mind and a healthier living environment.

"The company came to our house for mold removal and water removal work. The guys was very professional, explained about everything they did very well. And clean around them after they finished the job. I’m highly recommend for everyone. Thank you Peter ."

Leo F on September 2025

PNW Mold Masters: Fast and Easy Home Mold & Air Contaminant Testing Ensure the safety and air quality of your home with PNW Mold Masters. We specialize in quick, reliable testing for mold and other air contaminants, providing you with peace of mind and a healthier living environment.

"The company came to our house for mold removal and water removal work. The guys was very professional, explained about everything they did very well. And clean around them after they finished the job. I’m highly recommend for everyone. Thank you Peter ."

Leo F on September 2025


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
49 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 ACCURACY PROPERTY RESTORATION

ACCURACY PROPERTY RESTORATION

2038 NE Aloclek Dr Suite # 205
5.00(
7
)
Approved Pro

ACCURACY PROPERTY RESTORATION

2038 NE Aloclek Dr Suite # 205
5.00(
7
)
Approved Pro
Customers say: Quick response
47 local quotes requested
7 years of experience

Accuracy Property Restoration is a family-owned, bilingual (English & Spanish) general contractor serving Oregon and Washington. We specialize in expert testing and restoration for mold, asbestos, lead, water, fire, smoke, biohazard damage and odor control. Fully licensed and insured, we combine technical precision with compassionate, personalized service—restoring your property and your peace of mind.

"Everything went well from start to finish. Yoni and his team were nice, professional and on schedule. They cleaned the mold in our loft ceiling, installed proper ventilation, insulation, sheetrock and painted. The trim around the skylights looks perfect. The paint is perfect as well. They left our living room clean. We definitely recommend Accuracy U.S.A."

Julie R on December 2022

Accuracy Property Restoration is a family-owned, bilingual (English & Spanish) general contractor serving Oregon and Washington. We specialize in expert testing and restoration for mold, asbestos, lead, water, fire, smoke, biohazard damage and odor control. Fully licensed and insured, we combine technical precision with compassionate, personalized service—restoring your property and your peace of mind.

"Everything went well from start to finish. Yoni and his team were nice, professional and on schedule. They cleaned the mold in our loft ceiling, installed proper ventilation, insulation, sheetrock and painted. The trim around the skylights looks perfect. The paint is perfect as well. They left our living room clean. We definitely recommend Accuracy U.S.A."

Julie R on December 2022


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
66 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
56 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
383 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


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

...
Showing 1-10 of 61
Radon Detection and Reduction questions, answered by experts

Since radon typically comes out of the soil, it is most commonly found in the lower levels of a home. In houses with basements, that's a common location for radon. Homes built directly on the ground may have radon on the ground floors. Radon can be found on the upper floors of the home, but often in lower concentrations than in lower levels.

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.

Yes, if high levels are detected, professionals can provide solutions for radon reduction.

The only way to determine if you have a radon problem in your home is to have professional testing done. You can buy DIY radon test kits, but these are sometimes inaccurate in certain temperatures and humidity levels, and they don’t paint the entire picture in terms of your radon exposure. Scheduling testing once every two to five years is best. You can also look out for the following symptoms, which, according to the American Cancer Society, are symptoms of radon exposure:

  • Shortness of breath

  • Cough

  • Tightness in the chest

  • Difficulty swallowing

  • Hoarseness

Sampling typically takes 1-3 hours, and depending on the provider, lab results are available within 2-7 days.

By submitting this question, I acknowledge and agree that Angi may publicly display my name, city, state, and question on the website for professionals and others to see.

The Gresham, 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.