Short answer
A professional mold inspection starts with your concerns and the property's history, then moves to a visual assessment of accessible areas, moisture-meter and humidity readings, and thermal imaging to reveal hidden dampness. Samples are collected only when warranted, and you receive a documented report with photos and clear next steps.
Updated July 24, 2026
It starts with questions, not equipment
A useful inspection begins with a conversation: what have you noticed — an odor, a stain, a past leak — and what is the building's history. That context focuses the visit on the areas most likely to matter, so the walk-through is an investigation rather than a random sweep.
Visual assessment of accessible areas
The inspector visually evaluates accessible interior and relevant exterior areas, looking for visible growth, staining, prior water damage, and the conditions that let mold develop — poor drainage, condensation points, HVAC issues, and the like.
Not every dark mark is mold, and color alone does not indicate anything about toxicity. A careful inspector documents what is actually observed rather than labeling every discoloration "toxic black mold."
Moisture and thermal diagnostics
Moisture meters measure dampness inside materials, a hygrometer measures indoor humidity, and a thermal (infrared) camera reveals temperature differences that can flag hidden moisture behind finishes. Together these tools point to areas worth a closer look.
It is worth being precise about what they do: a thermal camera does not detect mold, and a moisture meter does not detect mold. They find moisture — the condition mold requires — which is what makes them useful.
Sampling and the report
If a sample will answer a real question — scoping, baseline, or clearance — the inspector collects air or surface samples with proper controls and submits them to an accredited laboratory. When mold is already visible, sampling is often unnecessary.
Afterward you receive a written report: photos, moisture readings, plain-language findings, any lab results, and clear recommendations. The goal is information you can act on — not alarm, and not a certification that a home is "mold-free," which no inspection can honestly provide.