Subleasing in New York involves various legalities and requirements. Tenants must navigate both state and city regulations to ensure compliance.Learn about your rights when it comes to sublease laws in NYC. You are entitled to request permission to sublet from the owner, and the owner may not unreasonably refuse such permission. Make sure you have concrete housing plans. First you need to find a good subtenant. Post the listing online, then interview potential subtenants and ask for three things. A sublet, or sublease agreement, adds someone new to an existing lease. Usually the new person (subletter) replaces someone who is moving out. Your landlord needs to give you permission to sublet.