Without seeing a copy of your contract and/or having more details, there is no way to tell. If it is simple estate, it can take 30 to 60 days. If there are issues that need to be worked out with regard to the estate it can take years. You need to speak to your attorney.
If I can be of further assistance, contact me direct. Good luck!
Mitchell S. Feldman
Associate Broker/ Director of Sales/ e-Pro Realtor
Fillmore Real Estate
Office: (718) 252-2000/ Cell: (917) 805-0783