20 unit condo complex typical operating budget?

[Mark Derby]

Any idea what a typical operating budget would be for a 20 unit condo complex in MA? It's got new windows, 10 YO rubber roof, Brick exterior. Grounds / parking lot are in very good shape.

Is there a ball park per unit formula? I'm looking at a condo and due to the recent repairs, the escrows are under their threshold of 10% and the bank is balking at writing a loan for it.