But by getting dirty (lol) he found that the hoarder was into photography left hundreds of cameras and photography equipment which he has sold and is still selling so far has made and extra $75k above and beyond his initial expected profit.

Have another plumber run a camera to verify the work was completed and the issue has been solved.

Any chance they have security cameras covering the garage area?

We have signage up and some fake cameras but its not working.  

@Alyssa Czopor I use the following to self manage remotely: keyless entry, wifi thermostat, ring flood camera, iPhone, Airbnb/Vrbo, Beyond Pricing (dynamic pricing), Your Porter for automated guest communication.

Other than that, cameras help.

You could always install a no trespassing sign with a security camera and have them arrested for trespassing and theft. 

Some landlords in my market are doing "self-guided" tours of apartments with lock boxes and a security camera or two.  

What I did and it actually worked was put a wireless (ring, blink, etc) camera right above the garbage with a sign to "monitor" any illegal dumping.

if you're over 20% equity and in good standing, there is no reason for them not to agree. i cancelled mine as soon as i hit that on my primary. don't need to prepay a nanny to do this for me.