sec edgar search. you will need to know the name of the actual entity - but also you need to understand the process, as the SEC does not tell you who is or is not current, you need to understand the filing requirements etc. 

I do know an independent landlord in our area that has one duplex and a fair housing organization filed a suit against him two years ago and he has had to defend it.  

If you are moving it from a personal name to an LLC there is an exemption form for taxes you also have to fill out and file along with transferring the deed.

Additionally, you must send a copy of the 1099-NEC form to the IRS, typically by January 31 if filing electronically or by February 28 if filing by paper.3. 

You must file the lawsuit and then you must obtain the order.If you purchased a tax certificate under the old system (people bid up the purchase price) you are not allowed to cut the timber while you have only a tax certificate, which is the time period up to three years after the auction.

Would you work with attorney on lawsuit or file everything through small claims court yourself?

$3,000 for a personal return (filing single) and 6 properties (no LLC or Corp) does not seem reasonable.

The main hiccup and hinderance for obtaining a mortgage for an investment property in PR is that all files are manually underwritten and the title process can be slightly more intensive. 

It's just far better to bring the loan current or pay it off or file for a "clean and honest" bankruptcy to stop the foreclosure.

Gotta file with Dept of buildings.