Top-rated radon detection and reduction specialists.

Get matched with top radon detection and reduction specialists in Longview, WA

Enter your ZIP and get matched with up to 5 pros

Need a pro for your radon detection and reduction project in Longview, WA?

Select your specific project to find the pro for you.

Find Radon detection and reduction specialists in Longview

Avatar for Armored Restoration

Armored Restoration

5.00(
19
)
Approved Pro

Armored Restoration

5.00(
19
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
62 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

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 Octopus Project Management LLC

Octopus Project Management LLC

4.77(
22
)

Octopus Project Management LLC

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


Robinson Restoration

5.00(
4
)

Robinson Restoration

5.00(
4
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Water Damage and Restoration Experts When you experience a disaster in your home or business, you need professional water damage restoration services to respond quickly to mitigate any damage that has occurred and begin the drying process immediately. At Robinson Restoration, we specialize in water damage restoration, sewage cleanup, and mold removal. Our team of certified water damage restoration professionals is standing by and can respond to anywhere in Clark County, WA, and the greater Portland metro area within 90 minutes. We know that water damage or mold growth to your home or business from a burst pipe, flood damage, or sewage leak is an incredibly stressful situation. Our goal as a water damage restoration company is to help provide you with some peace of mind as we navigate you through your damage restoration process. If you are experiencing a water damage event, call on the water mitigation services of Robinson Restoration, our certified professionals will respond quickly to prevent further damage, clean up standing water, protect electrical equipment, prevent mold, and mitigate the water damage. If you want to learn more about our mold remediation and water damage restoration services please reach out to us today!

"Tyler Robinson has an amazing team and they always put all their customers needs a top priority. I have referred this company for the last three years as I have so much faith and know that they take such great care of everyone. When working with Robinson they make you feel like family not just a customer with restoration needs . It’s comforting to know a very honest , reliable , and very compassionate company that will stand behind you during such a hard time such as water/sewer/mold damage ."

Rhonda B on April 2023

Water Damage and Restoration Experts When you experience a disaster in your home or business, you need professional water damage restoration services to respond quickly to mitigate any damage that has occurred and begin the drying process immediately. At Robinson Restoration, we specialize in water damage restoration, sewage cleanup, and mold removal. Our team of certified water damage restoration professionals is standing by and can respond to anywhere in Clark County, WA, and the greater Portland metro area within 90 minutes. We know that water damage or mold growth to your home or business from a burst pipe, flood damage, or sewage leak is an incredibly stressful situation. Our goal as a water damage restoration company is to help provide you with some peace of mind as we navigate you through your damage restoration process. If you are experiencing a water damage event, call on the water mitigation services of Robinson Restoration, our certified professionals will respond quickly to prevent further damage, clean up standing water, protect electrical equipment, prevent mold, and mitigate the water damage. If you want to learn more about our mold remediation and water damage restoration services please reach out to us today!

"Tyler Robinson has an amazing team and they always put all their customers needs a top priority. I have referred this company for the last three years as I have so much faith and know that they take such great care of everyone. When working with Robinson they make you feel like family not just a customer with restoration needs . It’s comforting to know a very honest , reliable , and very compassionate company that will stand behind you during such a hard time such as water/sewer/mold damage ."

Rhonda B on April 2023


Avatar for Bear Home Inspection LLC

Bear Home Inspection LLC

No reviews yet

Bear Home Inspection LLC

No reviews yet
Free onsite estimate

With extensive experience and understanding in commercial and residential construction, Bear Home Inspection knows what to look for. We specialize in giving a thorough inspection and a comprehensive inspection report.

With extensive experience and understanding in commercial and residential construction, Bear Home Inspection knows what to look for. We specialize in giving a thorough inspection and a comprehensive inspection report.


Avatar for Healthy Home Inspection Services LLC

Healthy Home Inspection Services LLC

5.00(
2
)

Healthy Home Inspection Services LLC

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

Healthy Home is a locally owned and operated company. Our qualified technicians provide testing for common household contaminants, such as asbestos, lead, radon and mold. Our courteous and knowledgeable technicians keep you updated throughout the testing process. Testing and results are quick and cost-effective, so you never have to wait endlessly for your results or pay more than you were quoted. We are local specialists keeping Greater Portland area homes safe. We assist homeowners, home buyers/sellers, real estate agents, property management firms and housing authorities. What set's Healthy Home apart is our: - Expertise - Ability to provide all indoor environmental services that you may be seeking - Upfront pricing - Certified/licensed/accredited personnel with years of experience - We only utilize accredited labs for analysis of your samples.

Healthy Home is a locally owned and operated company. Our qualified technicians provide testing for common household contaminants, such as asbestos, lead, radon and mold. Our courteous and knowledgeable technicians keep you updated throughout the testing process. Testing and results are quick and cost-effective, so you never have to wait endlessly for your results or pay more than you were quoted. We are local specialists keeping Greater Portland area homes safe. We assist homeowners, home buyers/sellers, real estate agents, property management firms and housing authorities. What set's Healthy Home apart is our: - Expertise - Ability to provide all indoor environmental services that you may be seeking - Upfront pricing - Certified/licensed/accredited personnel with years of experience - We only utilize accredited labs for analysis of your samples.





Avatar for Nonprofit Home Inspections

Nonprofit Home Inspections

5.00(
7
)

Nonprofit Home Inspections

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

We offer comprehensive home inspections that meet Oregon and Washington's Standards of Practice for home inspections. Our licensed home inspectors are also previous general contractors and are able to give you additional insight into the true state of your home. We include thermal imaging free with all of our home inspections.

"Teman Montgomery was totally professional; extremely knowledgeable, forthcoming about his observations, and intensely thorough. He arrived early to orient this buyer as to the procedure, and then methodically and with great care explained in common language the details as he worked through the house. After receiving and reviewing his report, with copious photos and recommendations for attention/repairs of defects he found, I am blown away by the whole process and would recommend this company to everyone who is looking for a detail oriented inspector with a stellar work ethic. Wow."

Susan F on June 2018

We offer comprehensive home inspections that meet Oregon and Washington's Standards of Practice for home inspections. Our licensed home inspectors are also previous general contractors and are able to give you additional insight into the true state of your home. We include thermal imaging free with all of our home inspections.

"Teman Montgomery was totally professional; extremely knowledgeable, forthcoming about his observations, and intensely thorough. He arrived early to orient this buyer as to the procedure, and then methodically and with great care explained in common language the details as he worked through the house. After receiving and reviewing his report, with copious photos and recommendations for attention/repairs of defects he found, I am blown away by the whole process and would recommend this company to everyone who is looking for a detail oriented inspector with a stellar work ethic. Wow."

Susan F on June 2018

Showing 1-10 of 30
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.

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).

A DIY kit can lessen the sting that comes with paying for a professional assessment, but these comprehensive tests are true lifesavers. Inspectors are more likely to catch all of the pollutants and hazards in your air. Plus, you’ll still need a professional to verify and act on your DIY test results. 

Some kits don’t include tests for certain air pollutants or only detect their presence, but not their levels (i.e., mold spores). If you’re willing to shell out money for a DIY kit, it’s usually better to stretch your budget slightly higher for a more detailed assessment.

Yes, DIY kits are available, but professional testing provides more accurate results and comprehensive reports.

The Longview, WA 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.