What should I look berfore buying a co-op ?

Answer 1

Take a look at:

Rules & Regs (make sure you can live with the rules)

Dues (if any; and what they cover, last increase - if there's a major repair anticipated, then expect an increase soon if the reserve balance isn't high enough)

Reserves ($$ in the bank, is it liquid, if they're wrapped up in stocks, then how quickly can they sell if there's a major repair)

Last improvements (what they were and dates - you don't want to share the cost of a roof replacement in the next year)

Neighbors (it sucks to be stuck next to bad neighbors, especially when you share an investment with them)

Good luck!