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Last updated: April 2026
MT

Mold Testing Services of Oregon

Portland, OR
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Mold Testing Services of Oregon (MTSO) provides mold and mycotoxin testing, indoor air quality assessments, and radon testing for residential and commercial properties. Owner Garrett Dayfield personally conducts inspections across the Portland Metro area and Southwest Washington. The family-owned business was founded in 2002 and does not perform remediation.

mold inspectionsmold testingmycotoxin testingindoor air quality testingradon testingair samplingsurface sampling
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Credentials & Experience

Years of Experience
24+
Certifications
  • MICRO (Mold Inspection Consulting and Remediation Organization) certification

Coverage Area

Portland Metro area, including Beaverton, Lake Oswego, Gresham, Tigard, and Hillsboro, plus Southwest Washington including Vancouver, WA.

Additional Details

Years of Experience
24 years
Independent (No Remediation Ties)
Yes
Service Types Offered
Residential InspectionCommercial InspectionAir Quality Testing

Location

3519 NE 15th Avenue, Suite 149, Portland, OR 97212, Portland, OR

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