Black Mold Inspection in San Francisco: What, Why & When

A mold inspection isn’t a glance—it’s a systematic evaluation by a certified investigator using moisture meters, thermal imaging, and lab-analyzed samples to define the scope of fungal contamination.

Inspection Components

1. Visual Survey: All accessible areas—attic, crawl space, HVAC, behind appliances, under sinks.
2. Moisture Mapping: Pin-type & non-invasive meters on walls, floors, ceilings. Thermal camera for hidden wetness.
3. Leak Detection: Plumbing, roof, window, foundation, HVAC condensate.
4. Sampling (if indicated):
   • Air: Spore trap (indoor + outdoor baseline).
   • Surface: Swab/tape lift of suspect growth.
   • Bulk: Material piece for culture/PCR.
5. Report: Lab results + observations + remediation scope + cost estimate.

When to Inspect

• Pre-purchase: Due diligence—negotiate remediation or price reduction.
• Post-water event: Flood, roof leak, pipe burst, AC overflow (>48 hrs wet = mold risk).
• Health symptoms: Unexplained respiratory issues, musty odor, visible growth.
• Pre-renovation: Disturbing mold during demo spreads spores.

Why Outdoor Air Baseline Matters

SF outdoor air has distinct spore profile (seasonal Cladosporium, Alternaria). Indoor samples must be compared to concurrent outdoor control—otherwise “elevated” is meaningless.

Lab Partner: Microstest Labs

AIHA-accredited, fast turnaround, detailed genus/species counts. Report includes raw data, not just “mold found.”

Inspection = Foundation for Remediation

You can’t fix what you haven’t defined. A thorough inspection by a certified San Francisco mold inspector (ACAC, IICRC) turns uncertainty into an actionable plan.