You will need cameras to keep employees honest if you go with live person model.

Here's the bigger question--have you gotten a security camera for the property?

You should have installed monitoring cameras.

Looking for a recommendation for a plumber that does sewer cleaning/camera inspections.

That's a camera that gets pushed down the sewer pipe.

Send a camera down the line.

Our latest project was a big undertaking over 5000 sq by the time we were finished the basement renos and nanny suite.

(Now, given that there were 20 people who came through and nobody rented initially is a different story, but regardless...)I'd suggest a pro photographer (or just look at pro photos and do your best to get close with a real camera, not an iphone), also, keep in mind what's in the photos.

When I got home I downloaded my camera and and started to populate a basic info spreadsheet I built to document my findings.

Give them some gloves and headgear and setup the camera!