Prudential Douglas Elliman Real Estate
The flip tax on all apartments in this particular building is 30% of the net profit after taxes.
In NYC you need an attorney to help you go through the financials, the board minutes and other regulations of the apartment. I don't think its mandatory but certainly not advisable not to use one.
I had a few mortgage companies look into the building and they were pretty sure they could give a mortgage. However, when you pre qualify with a bank or mortgage broker, it's good to have them look into the building you are planning to buy into.
I can send you an approximate estimate for the closing costs in this building if you like.