For an in-person visit I personally inspect the home using a variety of non-destructive tools including but not limited to a camera, infra-red camera, flashlight, moisture meter, VOC and formaldehyde meter, and particle counter. I may gather samples to test either dust or air spore trap (lab testing is extra) in the home to look for different species and relative amounts of mold.
We can also do phone consultation where you provide me details of what you find in the home, or conduct a Zoom meeting where I guide you where to look for possible water damage. Gathering a test sample is recommended if you are
serious about the location. I will then give you my opinion based on the information I gather, lab results and information you provide.