(LANDLORDSNY) As of December 1, 2017, the NY City Council expanded the Certificate of No Harassment (CONH) Program to safeguard NYC Tenants. The enlarged program requires certain property owners to prove to the City that they have not harassed tenants for the previous 5 years before they can obtain permits to renovate or demolish buildings. The several new additions to the laws expand both the classes of buildings to which CONH applies and what counts as prohibited harassment in these and many other multi-family buildings.