Can I get a loan for a second coop apt?

I combined 2 coop arartments, as you describe. It was a while ago, but, if I remember correctly, they required that the units be combined, and did one mortgage. Was actually pretty smooth. Done with Chase Mortgage.

Contact a mortgage broker, this is fairly common in Manhattan.

Very common and as said previously, one mortgage on the old apt and new purchase. The bank may ask for some $ in escrow pending removal of the 2nd kitchen and break-through.

@SLP2012 - Is the board OK with it? I remember reading in the New York Co-Op Bible abour a case like yours and either the board or the bank got upset.

@10003 - Nothing to do with the subject at hand, but you've got the username I wanted (since everybody seemed tobe using ZIP codes) when I signed up for SE! I had to settle for only the middle part ^_^;

It's possible. A client of mine just closed on a similar sounding deal (purchased apt next door to combine) with Manhattan Mortgage. Try Dan Levitan:
DLevitan@manhattanmortgage.com