4 units - Unknown it Legal

[Steve Mitrano]

I live in the Boston area and I’m looking at making an offer on a 4-unit property that has every indication it is a true 4-plex (4 main entrances, 4 identical layouts, 4 gas meters, 4 heating systems, 4 electrical meters/panels + common...but there is no record of it ever being a legal 4 plex. Just wondering if anyone has ever had a similar experience and how you handeled it? Red flag or go for it?