Octagon Cleaning & Restoration
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Octagon Cleaning & Restoration has a 4.7-star rating across 190 Google reviews. If you're dealing with mold in Portland, you're not alone - the city's 72% average humidity and 47 inches of annual rain create conditions where mold thrives, especially in older homes. Many of Portland's houses were built around 1950, which means their structures are more vulnerable to moisture problems. When mold shows up, it's worth taking seriously, and that's when calling a professional like Octagon Cleaning & Restoration makes sense.
Before you hire anyone, verify they hold the proper Maine contractor license and carry liability insurance. While Maine doesn't require a specific mold remediation license, look for IICRC S520 certification - that's the industry standard. A typical remediation project in this area runs between $1200 and $3800 depending on the scope, so get a detailed written estimate. Ask specifically what credentials they hold and request references from recent Portland jobs before you commit.
Based on public rating data and local climate records, not on individual reviews. We do not represent or endorse this firm.
Credentials & Verification
IICRC Certified Firm
Certified Firm · Master Designation · Applied Microbial Remediation Technician · Applied Structural Drying · Odor Control Technician · Trauma and Crime Scene Technician · Water Damage Restoration Technician · Fire and Smoke Damage Restoration Technician
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Business data sourced from public records · Last updated March 2026
MoldGuide is a lead referral service. We do not employ, endorse, or guarantee the work of any contractor listed in this directory. Verify licenses, insurance, and certifications independently before hiring.