If you are looking to assign a contract or purchase a contract that is assignable, you need to have a competent real estate attorney help you. Don't leave anything to chance. I will say that in order for a contract to be assignable, it would have to be written in the original contract of sale that said contract is in fact assignable.
If I can be of further assistance, please contact me direct.
Mitchell S. Feldman
Associate Broker/ Director of Sales/ e-Pro Realtor
Fillmore Real Estate
Office: (718) 252-2000/ Cell: (917) 805-0783
If you have any other questions feel free to give me a call.