N.Y. Private Housing Finance Law § 81
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(b) Notwithstanding anything contained in paragraph (b) of subdivision one of this section, first lien bonds or other obligations of housing companies, secured by a first mortgage upon all of the real property of a project and not exceeding the estimated cost prior to the completion of the project, or the appraised value or actual cost, whichever shall be less, after such completion, as certified by the commissioner, are hereby declared securities in which all public officers and bodies of the state and of the municipal subdivisions, all insurance companies and associations, and all savings banks and savings institutions, including savings and loan associations, in the state may properly and legally invest the funds within their control, provided that