Most of the new conversion/construction is not. There are two on the UES and one on the UWS below 110th Street that have come up.
If you are not finding your broker to be helpful, I can be of assistance.
I have information regarding the properties which you inquire about, however, you should seek the advice of your real estate broker if you have one. If you are not working with an agent, I would be happy to assist you. Please email me your contact information. Thank you.