It is a recurring issue that will come up whenever new tenants move in or out.

Dealing with frequent lock issues can be a real hassle, especially with multiple units.

Actually he brought the issue to your attention, was absolutely correct and the best thing you can do is make a note of it for the future. 

In 2015, the county was auctioning liens for overdue 2007 and 2008 county and city taxes, so all the available properties had at least 7 years of accumulated taxes.I had so many questions before the auction. 

I always hired contractors, and did material runs for them several times a week after work and cleaned up jobs on the weekend, which was also time I spent at the properties, discovering issues, thinking about the rehabs and what needed to be done next.

Not quite the same issue.

Sounds like a hard money lender that wants to take a property from you when you default.There's a lot of issues here starting with a guy that will loan you money and once it gets difficult wants you to abandon ship- red flag.There are a lot of unknowns here but trying to dump it seems like a 100% guarantee to lose money.

Somehow, it seemed to blow up as an issue during Covid. 

. - Rehab financing is less of an issue than take-out (permanent) financing here.

Zero-Issues.