N.Y.C. Admin. Code § 11-241: § 11-241 Discrimination in tax exempt projects.

No exemption from taxation, for any project, other than a project hitherto agreed upon or contracted for, shall be granted to a housing company, insurance company, redevelopment company or redevelopment corporation, which shall directly or indirectly, refuse, withhold from, or deny to any person any of the dwelling or business accommodations in such project or property, or the privileges and services incident to occupancy thereof, on account of the race, color or creed of any such person. Any exemption from taxation hereafter granted shall terminate sixty days after a finding by the supreme court of the state of New York that such discrimination is being or has been practiced in such project or property; if within sixty days such discrimination shall have been ended, then the exemption shall not terminate.