N.Y. Priv. Hous. Fin. Law § 101
It is hereby declared that in certain areas of municipalities located within this state there exist substandard conditions and insanitary housing conditions owing to obsolescence, deterioration and dilapidation of buildings, or excessive land coverage, lack of planning, of public facilities, of sufficient light, air and space, and improper design and arrangement of living quarters; that there is not in such areas a sufficient supply of adequate, safe and sanitary dwelling accommodations properly planned and related to public facilities; that modern standards of urban life require the housing be related to adequate and convenient public facilities; that the aforesaid substandard and insanitary conditions depress and destroy the economic value of large areas and by impairing the value of private investments threaten the sources of public revenues; that the public interest requires the clearance, replanning, reconstruction and neighborhood rehabilitation of such substandard and insanitary areas, together with adequate provision for recreational and other facilities incidental and appurtenant thereto according to the requirements of modern urban life and that such clearance, replanning, reconstruction and neighborhood rehabilitation are essential to the protection of the financial stability of such municipalities; that in order to protect the sources of public revenue it is necessary to modernize the physical plan and conditions of urban life; that these conditions cannot be remedied by the ordinary operations of private enterprise; that provision must be made to encourage the investment of funds in corporations, partnerships and trusts engaged in providing redevelopment facilities to be constructed according to the requirements of city planning and in effectuation of official city plans and regulated by law as to profits, dividends and disposition of their property or franchises; that provision must be made to enable insurance companies to provide such facilities, subject to regulation by law as to the return from such facilities and the disposition of property acquired for such purpose; and that provision must also be made for the acquisition for such corporations, partnerships, limited liability companies and trusts and companies at fair prices of real property required for such purposes in substandard areas and for public assistance of such corporations, partnerships and trusts and such companies by the granting of partial tax exemptions; that the cooperation of the state and its subdivisions is necessary to accomplish such purposes; that the clearance, replanning and reconstruction, rehabilitation and modernization of substandard and insanitary areas and the provision of adequate, safe, sanitary and properly planned housing accommodations in effectuation of official city plans by such corporations, partnerships, limited liability companies and trusts and such companies in these areas are public uses and purposes for which private property may be acquired for such corporations, partnerships, limited liability companies and trusts and such companies and partial tax exemption granted for such corporations, partnerships, limited liability companies and trusts and such companies; that these conditions require the creation of the agencies, instrumentalities, corporations, partnerships and trusts hereinafter prescribed for the purpose of attaining the ends herein recited; and the necessity in the public interest for the provisions hereinafter enacted is hereby declared as a matter of legislative determination.
N.Y. Priv. Hous. Fin. Law § 101