N.Y. Public Housing Law § 158

§ 158. Real property of authorities exempt from levy. All real\nproperty of an authority shall be exempt from levy and sale by virtue of\nan execution, and no execution or other judicial process shall issue\nagainst the same, nor shall any judgment against an authority be a\ncharge or lien upon its real property; provided, however, that the\nprovisions of this section shall not apply to or limit the right of\nobligees to foreclose or otherwise enforce any mortgage of an authority\nor the right of obligees to pursue any remedies for the enforcement of\nany covenant of an authority or of any pledge or lien given by an\nauthority on its rents, fees or revenues.\n