Top-rated radon detection and reduction specialists.

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

Enter your zip and get matched with up to 5 pros

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

Select your specific project to find the pro for you.

Find Radon detection and reduction specialists in Portland

Really Fast Rapid Radon Remediation
4.7(
30
)
Radon Gas - Abatement

Serving Portland, OR and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

"They were not satisfied until my radon levels were pretty much annihilated! Very clean install, came back to measure levels, were still a little higher than expected, so came and dug deeper and put in a different fan and that did the trick! Very reasonable pricing and great communication."
Response time9 hrs
1 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Alpha Environmental Services Inc
Alpha Environmental Services Inc
4.7(
134
)
Radon Gas - AbatementRadon Gas - Testing

Serving Portland, OR and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"Great. Everything went smoothly, on the time schedule that was laid out. Eric was easy to communicate with, and the office staff was responsive and efficient. We are happy with the system they installed; it is in a good location and functioning well. I would definitely recommend them to anyone looking for radon remediation, and based on their customer service, would hire them for other services as well."
Heating Oil Tank
Radon Reduction System
Removal of Underground Tank
Response time1 day
Response rate100%
Recommended by85%of homeowners
Avatar for Absolute Environmental, LLC
Absolute Environmental, LLC
4.8(
12
)
Radon Gas - Abatement

Serving Portland, OR and surrounding areas

Approved

In business since 2019

Free estimates

Customers say: Quick response

"Mike came out to do Radon Mitigation at our property. We had received quotes from some local companies reaching into 5 figures! Mike not only did the job for a 3rd of the cost, but the radon levels were massively reduced to proper safe amounts. High quality materials used in the work, and he completed everything in one day. He is a super nice guy, who is very experienced at what he does, straight forward, and honest. You can't go wrong, and I would definitely recommend him to friends."
Same as outdoor air
Radon Mitigation
Radon Mitigation
Radon Mitigation
Almeda Ridge

+7

Response time1 day
Response rate88%
Recommended by100%of homeowners
Avatar for Rose City Laboratories, LLC
Rose City Laboratories, LLC
5.0(
2
)
Radon Gas - Testing

Serving Portland, OR and surrounding areas

Approved

In business since 2012

Free estimates

Small jobs welcome

Science First. We are experts in our field and we will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business.

Response time2 days
Response rate90%
Recommended by100%of homeowners
Avatar for Nordic Service Group, LLC
Nordic Service Group, LLC
5.0(
4
)
Radon Gas - Testing

Serving Portland, OR and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

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.

Response time3 hrs
Response rate93%
36 neighbors recently requested a quote
Avatar for John's Waterproofing Co.
John's Waterproofing Co.
4.0(
72
)
Radon Gas - AbatementRadon Gas - Testing

Serving Portland, OR and surrounding areas

Approved (Corporate)

In business since 1974

Free estimates

Warranties offered

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!\n\n

Encapsulation System
Before Encapsulation
Before Interior Drain System
After Interior Drain System
Finished basement

+38

Response time6 hrs
201 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Blue Roof Home Inspections
Blue Roof Home Inspections
New to Angi
Radon Gas - Testing

Serving Portland, OR and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

Choosing the right home inspector can be a difficult. Unlike most professionals, you probably won't get to meet your home inspector before hiring them. Furthermore, different inspectors have varying qualifications, experiences, equipment, reporting methods, and pricing. One thing for sure is that a quality home inspection requires a lot of work, and a thorough inspections depends heavily on the individual inspectors effort. If you honor us by permitting us to inspect your new home, we guarantee to give our very best effort and perform the inspection as if we are buying the home ourselves. This we promise to you. We look forward to earning your business! \n

Home Inspection Review
4 neighbors recently requested a quote
Avatar for Sigman Home Inspection, LLC
Sigman Home Inspection, LLC
4.8(
23
)
Radon Gas - Testing

Serving Portland, OR and surrounding areas

In business since 2015

Credit card accepted

"We had a 48 hour radon gas test...Sigman showed up on time, installed the teat equipment, explained the test, returned 48 hours later, again on time, to get the equipment and sent us our results by email within a few hours,"
Crawlspace
Sun Nuclear 1028 Radon Monitor
Response time3 hrs
Recommended by100%of homeowners
Avatar for Propertyexam
Propertyexam
4.6(
18
)
Radon Gas - AbatementRadon Gas - Testing

Serving Portland, OR and surrounding areas

In business since 1986

Free estimates

Emergency services offered

"I am a first-time home buyer and I contacted Scott to perform the inspection on my new townhouse. The building had some known issues and I wanted to be sure that they had been resolved. Additionally, I wanted radon, mold and indoor air quality testing, to ensure that I wasn't moving into a "sick" building. Scott was able to accommodate my schedule on very short notice and he's really great to work with! He gave me all kinds of tips and helpful advice. Working with him was very educational and informative. I highly recommend Scott for all of your home inspection needs. And though some of the tests (such as radon, mold, etc) cost extra, they are well worth the price to ensure that you are investing in a safe and healthy home for you and your family."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+4

Recommended by100%of homeowners
Showing 1-10 of 33
Radon Detection and Reduction questions, answered by experts

While DIY testing is possible, abatement generally requires professional installation to ensure efficacy and meet safety standards.

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.

Many radon fans carry a five-year manufacturer's warranty. That said, your radon fan should last between five and ten years. Regular inspections will ensure the fan is operating properly. Unusual or exceptional noise coming from the fan or indications on your manometer or system monitor can immediately tell you that something is amiss.

A homeowner can install a radon mitigation system on their own. But it’s a challenging DIY that requires a lot of knowledge about radon mitigation as well as familiarity with local regulations. You do not want to risk an improper installation that leaves the system unable to detect radon or gives it a shortened life span. Relying on a professional is the surest way to guarantee a successful installation.

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).

The Portland, 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.