Radon Contractors in Portland, OR

26 radon mitigation and testing specialists serving Portland and the surrounding area — residential and commercial properties.

EPA action level: 4 pCi/L · NRPP/NRSB certified professionals · Residential & commercial radon services

Step 1: Test Your Home

Radon Test Kits — From $15 on Amazon

The EPA recommends testing every home below the third floor. Short-term charcoal test kits deliver results in 2–7 days.

MasterOfDirectories earns a small commission on qualifying Amazon purchases at no extra cost to you.

Shop Radon Test Kits →

Valley Radon LLC

6075 Cord Ln SE, Salem, OR 97306, USA

5.0(38 reviews)

(503) 881-2597

Mold Testing Services of Oregon

3519 NE 15th Ave Suite 149, Portland, OR 97212, USA

5.0(284 reviews)

(503) 754-2590

Radon Recon LLC

12251 NE Dudley Rd, Newberg, OR 97132, USA

5.0(1 reviews)

(503) 523-6774

86 Radon

2727 NE Bunn Rd, McMinnville, OR 97128, USA

5.0(38 reviews)

(971) 241-1439

Details Home Inspections

1212 Missoula Ave, Vancouver, WA 98661, USA

5.0(1,837 reviews)

(360) 823-3034

True Home Inspections

3909 NE Martin Luther King Jr Blvd #6, Portland, OR 97212, USA

5.0(270 reviews)

(503) 369-8498

residential radon llc

333 S State St, Lake Oswego, OR 97034, USA

5.0(1 reviews)

(503) 349-6066

Nonprofit Home Inspections

1515 SW 5th Ave #825, Portland, OR 97201, USA

5.0(1,018 reviews)

(503) 505-7879

Blue Ladder Home Inspections

20449 SW Tualatin Valley Hwy #384, Aloha, OR 97003, USA

5.0(807 reviews)

(971) 217-8898

Restoration Techs

404 S Beavercreek Rd #232, Oregon City, OR 97045, USA

5.0(127 reviews)

(971) 529-6515

Murphy Home Inspection

3212 SE 50th Ave, Portland, OR 97206, USA

5.0(711 reviews)

(971) 328-1009

Third Planet Environmental

10753 SE 29th Ave, Portland, OR 97222, USA

5.0(11 reviews)

(503) 766-5343

Environmental Works

22820 NE Sandy Blvd, Fairview, OR 97024, USA

4.9(766 reviews)

(503) 719-6715

Oregon Restoration Co.

17750 SW Upper Boones Ferry Rd Suite #150, Portland, OR 97224, USA

4.9(468 reviews)

(503) 860-9567

APEX Home Inspections and Environmental Services, Inc.

8305 SE Monterey Ave # 215, Happy Valley, OR 97086, USA

4.9(313 reviews)

(503) 650-8999

Top Notch Home Inspection

16415 Wayne Dr, Oregon City, OR 97045, USA

4.9(551 reviews)

(503) 816-6098

Integrity Home Inspections Inc

20340 SE Hwy 212, Damascus, OR 97089, USA

4.9(1,226 reviews)

(503) 246-5076

Alpha Environmental Services

11080 SW Allen Blvd #100, Beaverton, OR 97005, USA

4.8(522 reviews)

(503) 676-6327

SERVPRO of Northwest Portland

6710 N Catlin Ave, Portland, OR 97203, USA

4.8(362 reviews)

(503) 283-3658

SERVPRO of Southwest Portland

2525 NW Wilson St, Portland, OR 97210, USA

4.8(305 reviews)

(503) 777-9739

DRYmedic Restoration Services of Portland

18256 SW 100th Ct, Tualatin, OR 97062, USA

4.8(311 reviews)

(503) 455-7907

Pure Environmental

8206 N Fessenden St, Portland, OR 97203, USA

4.8(73 reviews)

(503) 893-9731

Xavier Environmental

201 NE Middlefield Rd, Portland, OR 97211, USA

4.7(18 reviews)

(503) 236-3796

Cascade Radon

12839 NE Airport Way, Portland, OR 97230, USA

4.5(33 reviews)

(503) 421-4813

Soil Solutions

3540 SE 28th Ave, Portland, OR 97202, USA

4.5(81 reviews)

(503) 234-2118

Down Under Environmental

8305 SE Monterey Ave # 215, Happy Valley, OR 97086, USA

4.0(4 reviews)

(503) 659-1576

Commercial Radon Services in Portland, OR

Radon is not just a residential concern. Office buildings, schools, warehouses, retail centers, and multi-family complexes in Portland are all subject to radon intrusion through concrete slabs, block foundations, and crawl spaces. Commercial radon mitigation in Portlandfollows EPA large-building protocols, requires certified measurement professionals, and involves mitigation systems scaled to the property's square footage and occupancy type.

Commercial Testing

Multi-point alpha track or continuous electronic monitor deployment across all occupied zones per EPA large-building protocol. Required for OSHA compliance and real estate due diligence in Portland.

Commercial Mitigation

Sub-slab depressurization systems, crawl space encapsulation, and HVAC-integrated ventilation upgrades sized for commercial square footage. Portland contractors handle buildings from small suites to large industrial properties.

Monitoring & Certification

Post-mitigation verification, ongoing radon monitoring systems, and certification documentation for property managers, lenders, and insurers in Portland and the surrounding OR region.

Commercial Radon FAQ — Portland

What is commercial radon mitigation in Portland?
Commercial radon mitigation in Portland involves installing sub-slab depressurization systems, crawl space encapsulation, and ventilation upgrades in office buildings, warehouses, schools, retail spaces, and multi-family units. Commercial systems are scaled to the building's square footage and HVAC layout — they differ significantly from residential systems in design, permitting, and ongoing monitoring requirements.
How is commercial radon testing different from residential testing?
Commercial radon testing in Portland, OR typically follows EPA protocols for large buildings (EPA 402-K-93-001), which require multiple test devices per floor and longer measurement periods than home tests. Certified radon measurement professionals deploy long-term alpha track detectors or continuous electronic monitors across all occupied and sub-occupied zones.
Which Portland radon contractors handle commercial buildings?
Several radon contractors serving Portland hold NRPP or NRSB commercial certifications for large-structure mitigation and testing. Contact the specialists listed on this page to confirm commercial service availability, as some firms specialize exclusively in residential properties.
What radon level triggers mitigation in a commercial building?
OSHA and the EPA both recommend action at or above 4 pCi/L for occupied commercial and industrial spaces. Many Portland property managers choose to mitigate at 2–3 pCi/L to stay well below regulatory thresholds and reduce liability exposure. Schools and healthcare facilities often target sub-2 pCi/L levels.
How much does commercial radon mitigation cost in Portland?
Commercial radon mitigation systems in Portland typically range from $1,500 for small retail suites to $25,000+ for large industrial or multi-story buildings. Cost depends on slab area, number of sub-slab suction points, existing HVAC infrastructure, and post-mitigation verification testing. Request quotes from multiple licensed contractors listed on this page.

Need commercial radon mitigation or testing in Portland? Contact the certified specialists listed above. Confirm commercial availability when scheduling — some contractors serve residential clients only.