Sonoma County's Mediterranean climate—cool, wet winters with 30–40 inches of rainfall and warm, dry summers—creates ideal conditions for mold. Post-wildfire moisture from events like the 2017 Tubbs Fire and Russian River flooding further contribute to mold problems in North Bay homes.
Black mold thrives in chronically damp areas—flooded basements, leaky roofs in Rohnert Park, Santa Rosa, and Windsor. It produces mycotoxins causing respiratory issues, headaches, and fatigue. Professional IICRC AMRT-certified remediation per the S520 standard is required.
Found in over 50% of California indoor air samples, Aspergillus thrives in dusty, poorly ventilated spaces like attics and HVAC systems. More than 200 species exist, many allergenic.
Penicillium grows on water-damaged building materials. Cladosporium appears on painted walls and fabrics. Chaetomium grows in homes with chronic water leaks. All require professional IICRC-standard assessment and remediation.
NBRA member companies throughout Santa Rosa, Petaluma, Healdsburg, Sebastopol, and Sonoma County are IICRC AMRT-certified for safe mold remediation following ANSI/IICRC S520.