As an investor, wouldn't you want to include specific information as to what type of property you are looking for? You made no mention of budget and are you referring to stalled Condo's who don't have money to complete a project? I know of an area which has a very large building complex, it may belong to the city or state.
Are you financing, what are you plans with this project etc...
All of this is information I'm sure anyone working with you will need to know.
Your best bet would be to go onto http://www.Realtor.com and do a search under multi-family properties. If you want, contact me and I can do the legwork for you.
You also mentioned that you are a seller... if you have a property(s) you are selling in Brooklyn I would like to find out more about it/them. Also, are you going to be doing a 1031 tax deferred exchange?
Please contact me and we can talk more. Thank you.
Mitchell S. Feldman
Associate Broker/ Director of Sales
Madison Estates & Properties, Inc.
Office: (718) 645-1665/ Cell: (917) 805-0783