First you need to find a good subtenant. Post the listing online, then interview potential subtenants and ask for three things.I signed a lease for an apartment in NYC and just found out that I will have to leave the area in 5 months. Subletting it is illegal. CityFHEPS is a rental assistance supplement program to help individuals and families find and keep an apartment,. This document gives general information about the CityFHEPS rental assistance program. As soon as you know you want to get out of your lease, notify your landlord or management company in writing. With permission and agreement with the landlord Rent the property to the new tenant with a new lease in place at the higher rent. What is a sublease agreement in NYC? What does a sublease contract look like?