📍 Sonoma County · Allied Restoration Headquarters, Petaluma

Mold Remediation in Sonoma County

IICRC-certified mold remediation across Sonoma County from our Petaluma headquarters — crawlspaces, post-flood mold and rebuild moisture. Containment, removal, clearance. Call (415) 529-5637.

📞 (415) 529-5637 Free Assessment

Wet winters, river flooding, foggy west county towns and a large stock of older raised-foundation homes make mold one of the most common problems we fix in Sonoma County. We find the moisture source, contain the area, remove growth to IICRC S520 standards and verify the result — from Petaluma crawlspaces to Russian River flood homes.

Allied Restoration serves Petaluma, Santa Rosa, Rohnert Park, Cotati, Sebastopol, Sonoma, Windsor, Healdsburg, Guerneville, Forestville, Monte Rio and the rest of the county from our Petaluma office at 15 Copeland Street, Petaluma, CA 94952, with a 60-minute emergency response target and IICRC-certified technicians on every job.

Mold Remediation Services in Sonoma County

Inspection & Moisture Source

Finding the leak or condensation that feeds the growth — or it comes back

Containment

Poly barriers and negative air so spores do not travel to clean rooms

HEPA Air Filtration

Air scrubbers running throughout removal and cleaning

Removal of Affected Materials

Drywall, insulation and trim removed per IICRC S520

Cleaning & Treatment

HEPA vacuum, damp wipe and treatment of framing and subfloor

Clearance & Rebuild

Post-remediation verification, then repairs to pre-loss condition

Sonoma County Mold Sources

The causes we see most across the county:

Russian River flooding — River towns like Guerneville and Monte Rio flood in major winter storms. Flooded homes need Category 3 tear-out and thorough drying before rebuild, or mold returns.
West county fog and redwoods — Sebastopol, Forestville and Occidental homes under redwoods stay damp much of the year, especially on north walls and in crawlspaces.
Raised-foundation older homes — Petaluma, Santa Rosa and Sonoma have many older homes over dirt crawlspaces without vapor barriers.
Post-fire rebuild moisture — Some homes rebuilt after the 2017 fires trapped wet framing or have window and flashing leaks behind finished walls.
Rental and agricultural housing — Overcrowding, poor ventilation and deferred maintenance in older rentals feed bathroom and window-wall mold.

Not sure if you have mold? Start with an inspection. See mold inspection in Santa Rosa, or find your city: Petaluma, Santa Rosa, Rohnert Park, Sonoma, Healdsburg.

Why Sonoma County Property Owners Call Allied

Real local offices in Petaluma and San Francisco — not a national franchise call center
IICRC Certified Firm; WRT, ASD, FSRT and AMRT certified technicians
60-minute emergency response target to Sonoma County, 24/7/365
We own our large-loss equipment — desiccant dehumidification, three-phase temporary power, high-volume extraction
Xactimate documentation and direct adjuster coordination
EPA Lead-Safe certified for pre-1978 homes
20+ years serving North Bay homeowners, property managers and commercial clients

Frequently Asked Questions

Do you serve the Russian River area?

Yes. We serve Guerneville, Monte Rio, Forestville and the rest of the lower Russian River, including after flood events.

What does mold remediation cost in Sonoma County?

Small, contained jobs can be a few thousand dollars; whole crawlspaces or multiple rooms cost more. We give a written scope and price after inspection.

Do you test after remediation?

Yes. Post-remediation verification confirms the area is clean before rebuild, and independent third-party clearance testing is available.

How fast can you reach Sonoma County?

Allied dispatches to Sonoma County from our Petaluma office at 15 Copeland Street, Petaluma, CA 94952, with a 60-minute emergency response target 24 hours a day, 7 days a week.

Do you work directly with my insurance company?

Yes. Allied documents every job in Xactimate — the estimating format every major carrier uses — and coordinates directly with your adjuster from first call to final repairs.