Remember like add-ons to a vehicle purchase purchasers effectively increase the amount of capital borrowed. 

There is small retention pond kind of area next to my property belonging to city which they are not managing ( There are big trees there which are close to my property about 12 feet away which may damage roof if fall towards my property but it never seems happened since 1961 touch wood).

The rapid rise in interest rates have caused somewhat of a mess for multi-family but that damage is likely already in the past (but not played out yet).

I never take them up on this offer as they are not insured and they could hurt themselves or cause damage to the property or someone else.

In public records was it ever assigned or were you ever notified of a transferOnce you find the lender I would reach out to them directlyI would also get an attorney involved in the state and potentially seek legal action and see if there are also trebled damages as well.Was the loan already paid off?

He has to prove damages and you haven't stated anything a judge would award damages over.Putting in insulation is a good investment for you long term. 

If not, I'd appreciate any advice on how to set this up effectively.

Repairing water damage and fixing broken items is the bear minimum for a landlord.

Drain System: POSSIBLE DAMAGED LINE.

What strategies have you found effective in building relationships with potential private lenders?