Radon Contractors in Spokane, WA

8 radon mitigation and testing specialists serving Spokane 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 →

Trustworthy Home Inspection

4907 N Lacey St, Spokane, WA 99217, USA

5.0(116 reviews)

(509) 951-4489

Golden Star Home Inspections

1818 W Francis Ave #340, Spokane, WA 99205, USA

5.0(815 reviews)

(509) 720-6279

Spokane Fire & Water Restoration

9601 E Sprague Ave, Spokane Valley, WA 99206, USA

5.0(85 reviews)

(509) 368-1228

Pillar To Post Home Inspectors - Jeff Schroeder Team

1521 N Argonne Rd, Spokane Valley, WA 99212, USA

5.0(620 reviews)

(509) 443-6983

Restoration 1 Inland NW - Spokane

9708 E Montgomery Ave STE D, Spokane Valley, WA 99206, USA

4.8(575 reviews)

(509) 463-2295

Gold Seal Plumbing

5524 E Boone Ave, Spokane Valley, WA 99212, USA

4.8(3,562 reviews)

(509) 535-5946

Air Tech Abatement Technologies

55 Lincoln Rd #106, Spokane, WA 99208, USA

4.3(20 reviews)

(509) 315-4550

Specialty Environmental

695 N Legacy Ridge Dr #200, Liberty Lake, WA 99019, USA

3.4(5 reviews)

(509) 535-1313

Commercial Radon Services in Spokane, WA

Radon is not just a residential concern. Office buildings, schools, warehouses, retail centers, and multi-family complexes in Spokane are all subject to radon intrusion through concrete slabs, block foundations, and crawl spaces. Commercial radon mitigation in Spokanefollows 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 Spokane.

Commercial Mitigation

Sub-slab depressurization systems, crawl space encapsulation, and HVAC-integrated ventilation upgrades sized for commercial square footage. Spokane 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 Spokane and the surrounding WA region.

Commercial Radon FAQ — Spokane

What is commercial radon mitigation in Spokane?
Commercial radon mitigation in Spokane 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 Spokane, WA 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 Spokane radon contractors handle commercial buildings?
Several radon contractors serving Spokane 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 Spokane 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 Spokane?
Commercial radon mitigation systems in Spokane 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 Spokane? Contact the certified specialists listed above. Confirm commercial availability when scheduling — some contractors serve residential clients only.