Lowest commitment, fastest answer

Not sure what it is? Send a photo.

An IICRC-certified specialist replies within 2 business hours. Tells you what it likely is, whether it warrants a test, and what to do next. No commitment. Free.

Photo-check page - smartphone photographing a small mold patch on a wall (pho1)

Drop your photos here

Up to 3 photos, 10 MB each. JPG, PNG, HEIC, WEBP. Phone-camera photos are fine - no need to resize.

Photos Tips: include a wide shot for context, then a close-up of the suspect area. If you can, include a ruler or coin for scale.

What's going on? (optional)

Where in the home? (optional)

Where should we send the assessment?

Your name

Typical reply: under 2 business hours

You'll get a written assessment by email. No phone call, no follow-up unless you ask for one. See our seven promises and privacy policy.

What you'll get back

What it likely is - mold, mildew, mineral efflorescence, water stain, soot, dust, or something else. We've seen a lot of photos.
Whether it warrants testing - sometimes yes, sometimes no. We tell you which group you're in.
The next step - a DIY fix, a consult, or "this looks fine, you're good." No upsell either direction.

A photo isn't a substitute for a lab-verified test, but it answers most "do I have a real problem here?" questions in 15 seconds of expert eyes. That's the whole point.