With a 3 family you come under the auspices of the state's department of community affairs.

I deleted the company name   Dear <<First Name>>,As of December 31, 2018, the new Baltimore City rental property inspection laws are in place and being enforced.

I can't give a real answer from experience, but I can suggest calling banks -- EVERY bank -- EVERY credit union -- EVERY mortgage lender -- and ask for their "REO" department (Real Estate Owned).I admit that I've done that in the past, and did get to look at a few nice deals, but that dreaded "F" word* stood in the way.Of course, the challenge these days, with the Internet and Email and such, almost nobody has a live person answering the phone anymore.

You could get the health department to do a walk through and write the changes that must be made, then give the hoarder a 5 day notice to comply and stay in compliance. 

I would contact the city building department.

Register with the Wisconsin Department of Agriculture, Trade and Consumer Protection.

Dear fellow members,With all your experience, may I pick your brain please?!

We then found out the tenant tried to grow marijuana in it, so we called the police department.

With FHA you have 3.5% going towards your equity that's yours, and 1.75% going to the Department of Housing and Urban Development. 

I think I'd be a great resource in this department.