One alternative is to talk to the bank to see if they would be willing to cur their losses now.  

In this case 9,600/193,000 which is just a hair under 5%

Also Worc multis tend to still have knob and tube electrical, horse hair walls and lead plumbing.

I think installing one would be worth not splitting hairs regarding if you are legally required to retrofit or not.

If so this may limit such things as the type of windows to replace, the color (or type) of exterior work you might do...even if a fence is allowed to be placed on the property (and what type of fence).Gail Yep, great point...I've had to deal with 'Historic Committees' before...a bunch of blue-haired old ladies with too much time and power on their hands.

Asbestos and horse hair used to be put into plaster to stop it from cracking.Dealing with asbestos is much worse that dealing with mold.

The hardest parts are building a cleaning team that is on point 100% of the time (that hair left in the shower? 

Getting your hair cut?

After tearing out my last hair trying to line up a handyman for a job at one of my properties in Burlington, I've decided to use a management company since presumably they either have repair people on staff or a list of contractors who will respond to their requests.

Just a hair over 10%...