Compare 22 radon testing & mitigation contractors in Portland.
Oregon Restoration is a comprehensive property restoration company providing emergency water damage, mold remediation, fire damage repair, and reconstruction services to residential and commercial properties across Oregon and Southwest Washington since 2008.
Premier Spray Foam Co is Portland's #1 local spray foam insulation company providing residential, commercial, agricultural, and roofing insulation services with competitive pricing and lifetime warranties on select services.
TerraFirma Foundation Systems provides crawl space repair, encapsulation, basement waterproofing, and foundation repair services for homeowners in the Seattle, Tacoma, and Portland metro areas. They specialize in stabilizing foundations, fixing concrete, and protecting homes from water damage and seismic risks.
Mega Xpress LLC is a leading insulation contractor providing comprehensive insulation solutions for crawlspaces, attics, and walls in residential and commercial properties. They specialize in insulation installation, removal, encapsulation, mold remediation, and energy efficiency improvements.
GreenSavers is an energy-efficient HVAC, insulation, solar, and home energy upgrade contractor serving Portland and Central Oregon. Founded in 2007, they are a certified B Corporation and eight-time ENERGY STAR® Contractor of the Year in Oregon.
Space Down Under is a locally owned and family-run foundation and structural repair contractor specializing in house lifting, foundation replacement, and basement work in the Portland area.
Mold Testing Services of Oregon provides objective mold and mycotoxin testing, indoor air quality testing, and certified radon testing using laboratory-grade equipment and accredited laboratories. They do not perform remediation, ensuring transparent and unbiased findings.
PuroClean of East Portland provides 24/7 emergency water damage restoration, fire and smoke damage cleanup, mold remediation, and biohazard cleanup services for residential and commercial properties in the Portland-Vancouver-Hillsboro area.
Portland-based water damage and mold remediation specialist using patented dry fogging technology to eliminate toxic mold from homes and businesses. They provide comprehensive mold inspection, testing, removal, and remediation services.
Advanced Concrete Technologies is a concrete construction contractor specializing in driveways, patios, sidewalks, and related concrete work in the Portland area. They provide professional concrete construction with a focus on quality craftsmanship and customer service.
Installed Building Products Portland is a local insulation contractor offering energy-efficient insulation installation and after-paint home upgrades including spray foam, fiberglass, cellulose insulation, shower doors, mirrors, and other home installation services for residential and commercial properties.
Portland-based 24/7 emergency water damage restoration and full reconstruction company serving Oregon and Southwest Washington. They handle everything from emergency cleanup and water removal to insurance coordination and complete property rebuilding.
Masonry, foundation repair, basement waterproofing, and drainage contractors serving Portland OR and Vancouver WA areas. They specialize in keeping water out of basements and homes while repairing damage caused by water intrusion.
Trusted drainage solutions provider serving Portland families since 1993, specializing in crawl space drainage, roof and storm water management, basement and foundation waterproofing, and surface water management.
The Spray Foam Company is a family-owned and operated insulation contractor based in Portland, OR, specializing in high-quality spray foam insulation for residential and commercial properties with 10+ years of experience.
Crawl Pros is a locally-based Tacoma crawl space company offering comprehensive crawl space and attic services including encapsulation, insulation, mold remediation, and structural repair to address moisture, mold, and pest issues.
A family-owned seismic retrofit company specializing in earthquake-proofing homes in the Portland area by anchoring structures to foundations and reinforcing them against lateral seismic forces.
SERVPRO of Southwest Portland provides 24/7 emergency restoration and cleaning services including water damage, fire damage, mold remediation, and construction services for residential and commercial properties.
John's Waterproofing is a family-owned contractor specializing in basement waterproofing, crawl space repair, and encapsulation for Oregon and Washington homes. They offer patented solutions to create dry, healthy crawl spaces and basements.
Portland homeowners face common crawl space and foundation challenges driven by local soil and climate conditions. Moisture control, encapsulation, and structural repair are among the most-requested services.
Crawl space encapsulation in the Portland area typically ranges from $5,000–$15,000 depending on square footage and moisture severity. Foundation repair costs vary widely based on the scope of work. Get multiple quotes from verified contractors.
Portland-area contractors typically serve surrounding communities within a 30–50 mile radius.
The national average for radon mitigation is around $1,200, with most systems costing $800–$2,500. Get quotes from contractors above for accurate local pricing in Portland.
Radon levels vary by neighborhood and even by home. The only way to know your home’s radon level is to test. The EPA recommends testing every home, regardless of geographic zone. If your home tests at or above 4 pCi/L, mitigation is recommended.
Yes. The EPA and most real estate professionals recommend radon testing during every home purchase. Many states require radon disclosure at sale. A short-term professional test (48–96 hours) is standard during the inspection period. If levels are elevated, mitigation can often be negotiated as a seller concession.
Look for contractors with NRPP or NRSB certification — these are the national credentials recognized by the EPA. Ask about their specific system design, warranty terms, and whether they include a post-mitigation re-test. Get at least 2–3 quotes.
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