I bought my co-op 15 years ago in a 117-unit doorman building on the Upper West Side. When I moved in, the building had already been talking about a roof deck for many years but never acted upon it. Eventually I wound up chairing the committee charged with getting it done.

Not everyone supported it.  More of the newcomers wanted to pursue it and there were a lot of issues people were sensitive to, including cost.

We had enough money to pay for it out of reserves rather than do an assessment, which the board was very sensitive about.