I terminated my lease early at the end of April. My landlord said he couldn't get a renter until June 1st so he is charging me for May rent. According to the super and doorman, my landlord sold the apartment in mid may. My LL is suing me for may rent. If it is true that the apartment was sold, how can I prove it. The super and doorman are no help because they work for the landlord and won't testify to anything in court.
Transfers of deeds/property ownerships/mortgages etc... are recorded in the local City Register's office. "The Office of the City Register, part of the Finance Department's Property Division, is the recording office for real and personal property records in four of New York City's five counties: Bronx, Kings (Brooklyn), New York (Manhattan) and Queens." http://www.nyc.gov/html/dof/home.html
If no new info appears, the records will show your LL mortgage company, you can call them and ask if the property has been sold etc... By the way, just because the apt. was sold may not mean that you are not liable for the rent. Go see your local Pro Se Atty. at Housing Crt. Best of Luck!
The above information is from a non-attorney tenant activist and is not considered or to be used as legal advice.