Oregon Health Authority — Radon Gas Program
Oregon radon measurement and mitigation companies (air)
36 measurement companies and 12 mitigation companies from the official OHA certified-company pages. Updated / retrieved 2026-09-25 (US/Pacific).
If you are not sure you need a pro yet, see when a DIY radon test kit is enough or how to test a home for radon.
OHA publishes separate public lists of radon measurement and mitigation companies located in Oregon that have at least one technician on staff certified by NRPP or NRSB. OHA states these lists are for informational purposes only and are not an endorsement. Names, contacts, phones, websites, and cities below are transcribed from the official OHA tables on 2026-09-25 (US/Pacific). Nothing invented. Missing phones are shown as —.
Company names are kept as printed on each OHA table (including spelling differences between the measurement and mitigation lists). A company may appear on one list, both, or neither over time — re-check the OHA pages and the technician’s NRPP or NRSB credential before hiring. OHA notes that organizations outside Oregon can also provide testing devices or services.
This page covers indoor air only, not well water. Oregon does not issue a separate state radon license on these pages; listing reflects OHA’s NRPP/NRSB staff-certification criteria as published.
Always verify a company is still listed and that staff credentials are current before hiring. This index does not rank contractors or take referral fees. No Amazon kit links on this state page.
Official sources
- OHA — Certified Radon Measurement Companies (retrieved 2026-09-25; primary measurement roster)
- OHA — Certified Radon Mitigation Companies (retrieved 2026-09-25; primary mitigation roster)
- OHA — Radon Gas (retrieved 2026-09-25; program hub)
- NRPP Find a Pro (retrieved 2026-09-25; linked from OHA lists)
- NRSB Find a Pro (retrieved 2026-09-25; linked from OHA lists)
- U.S. EPA Radon (retrieved 2026-09-25)
Showing 48 of 48
OHA certified measurement companies
36 companies · Oregon location with at least one NRPP- or NRSB-certified measurement technician on staff (as published by OHA).
| Company | Contact / web | Phone | City |
|---|---|---|---|
| 3R's Construction | Duane West www.3rsconstruction.com |
(503) 363-1059 | Salem |
| Absolute Environmental | Michael Stipan Info@absoluteenvironment.com www.absenviron.com |
(503) 878-9828 | Portland |
| Alpha Environmental Services, Inc. | Richard A Cason www.alphaenvironmental.net |
(503) 292-5346 | Beaverton |
| Atlas Technical Consultants, LLC | Danielle Cook www.oneatlas.com |
(971) 319-6950 | Portland |
| BriteBox Labs | Orlando Baza www.briteboxlabs.com |
(541) 299-2008 | Bend |
| Cascade Environmental Solutions | Latima Clark, Jennifer Levy lclark@cascade-environmental.com |
(971) 225-2567 | Portland |
| Cascade Radon, Inc. | Felicia Flanders www.cascaderadon.com |
(971) 303-2003 | Portland |
| Diligence Inspections | Ryan Horton ryan@diligenceinspections.com diligenceinspections.com |
— | Milwaukie |
| EAECo. LLC | Daniel Stallings dan.stallings@outlook.com |
(503) 980-4148 | Sherwood |
| Environmental Works | www.eworksnw.com | (503) 676-7812 | Beaverton / Fairview |
| Evren Northwest, Inc. | Dan Sajko, Victoria Bennett, Lynn Green, Isabel Garcia www.evren-nw.com |
(503) 452-5561 | Portland |
| Four Walls Inc. | Jan-Michael Barlow, Andrew Manla jan@fourwallsinc.com andy@fourwallsinc.com |
(503) 575-5496 | Sheridan |
| Green Door Home Services | www.greendoorhomeservices.com | (512) 426-8336 | Hood River |
| HouseGeek Home Inspection | Jeff Strang | (503) 752-9494 | Portland |
| Inspections Unlimited Schultens LLC | Nathan Schultens www.inspectionsunlimited.com/home |
(503) 581-4930 | Salem |
| John's Waterproofing | Colton Barber, Matthew Shutt www.johnswaterproofing.com |
(844) 261-9012 | Silverton |
| Justice Property Inspections | Greg Justice www.justicepropertyinspections.com/%22 |
(888) 414-4107 | Rainier |
| JustRadon.Com | Lawrence Belland, Eric Holm www.justradon.com |
(503) 740-7737 | Lake Oswego |
| MCC Inspections | Michael Cortes www.mccinspections.com |
(503) 851-4111 | Beaverton |
| Northwest Inspection Services | Alex Schiedler alex.schiedler@npiinspect.com npiweb.com/pdxmetro |
(503) 757-4442 | Tigard |
| NOVA Group, GBC | Jessica Oxford jessica.oxford@novagrougbc.com www.novagroupgbc.com/health-safety |
(801) 358-6912 | Troutdale |
| Oregon Health Homes, LLC | Jacob Hardin info@oregonhealthyhomes.com www.oregonhealthyhomes.com |
(971) 570-9097 | Aloha |
| PBS Engineering and Environmental Inc. | Kennedy Potts www.pbsenv.com |
(541) 686-8684 | Eugene |
| Performance Insulation & Energy Services | Sean Siemienczuk seans@performinsulation.com www.performanceinsulation.com |
(503) 598-8001 | Sherwood, Redmond |
| Radon Ranger | Dylan Hay-Chapman www.radon-ranger.com |
(818) 679-4046 | Redmond |
| Redline Environmental LLC | Cheryl Rice, Patrick Oliver www.redlinefastpdx.com |
(503) 832-8300 | Portland |
| Ricks Inspection Services Enterprise, LLC | Ricardo Regalado rick@riseoforegon.com |
(971) 237-2922 | Yamhill |
| Room by Room Home Inspection Services LLC | Daniel Doty dandoty@rbrinspectionservices.com www.rbrinspections.com |
(971) 393-7739 | Beaverton |
| Rose City Laboratories, LLC | Nicholas Buffington www.rosecitylabs.com |
— | Portland |
| Sneak Peek Home Inspections, LLC | Matthew Barker www.sneakpeekoregon.com |
(541) 508-9057 | Bend |
| Soil Solutions Environmental Services, Inc. | Neal Correy www.soilsolutionsenvironmental.com |
(503) 234-2118 | Portland |
| Speedy Inspections | Steven Beatty, Matthew Beatty thespeedyteam.com |
(503) 882-2104 | Clackamas |
| Status Inspections | Charles Kent charlie@statusinspectionsinc.com |
(503) 508-3373 | Gresham |
| T2 Home Services | Mark Townsend www.t2homeservices.com |
(541) 969-7640 | Pendleton |
| TRC Environmental Corporation | Chloe Hudson, Matthew Cuda www.trccompanies.com |
(971) 275-3719, (503) 880-0126 | Portland |
| Willamette Radon, LLC | George Croff www.willametteradon.com |
(503) 989-9992 | Wilsonville |
OHA certified mitigation companies
12 companies · Oregon location with at least one NRPP- or NRSB-certified mitigation technician on staff (as published by OHA).
| Company | Contact / web | Phone | City |
|---|---|---|---|
| 3R's Construction | Duane West www.3rsconstruction.com |
(503) 363-1059 | Salem |
| Absolute Environmental | Michael Stipan www.absenviron.com |
(503) 878-9828 | Portland |
| Alpha Environmental Services, Inc. | Richard Cason www.alphaenvironmental.net |
(503) 292-5346 | Beaverton |
| Cascade Radon, Inc. | Wade Gervais www.cascaderadon.com |
(503) 964-0818 | Molalla |
| Environmental Works LLC | Devlin McAllister devlin@eworksnw.com www.eworksnw.com |
— | Fairview |
| Evren Northwest, Inc. | Lynn Green, Dan Sajko www.evren-nw.com |
(503) 452-5561 | Portland |
| JustRadon.Com | Jonathan Miranda, Eric Holm, Lawrence Belland www.justradon.com |
(503) 770-5963, (503) 987-8776, (503) 740-7737 | Lake Oswego / Portland / Saint Helens |
| Oregon Healthy Homes, LLC | Jacob Hardin info@oregonhealthyhomes.com |
(971) 570-9097 | Portland Metro |
| Radon Testing & Mitigation PNW LLC | Joshua McPherson | (360) 747-1749 | Portland |
| Soil Solutions Environmental Services | Neal Correy www.soilsolutionsenvironmental.com |
(503) 234-2118 | Portland |
| Speedy Inspections LLC | Steven Beatty thespeedyteam@gmail.com |
(503) 882-2104 | Clackamas |
| Xavier Environmental, Inc. | Mark Norbury xavierenv@gmail.com |
(503) 236-3796 | Portland |