N.Y. Public Service Law § 104
* § 104. Fiber-based services. 1. Where a telephone line, as such term is defined in subdivision eighteen of section two of this chapter, or a portion of a telephone line, has previously been placed by a telephone corporation in or on a building or other property of an owner other than the telephone corporation and remains in place in or on such building or other property, the telephone corporation may, without any additional compensation to the owner, replace or supplement the line or portion of such line with fiber optic facilities for purposes of providing any telephone, broadband, cable or other video service that the telephone corporation or its affiliate may lawfully provide, provided that the provision of such services over those facilities does not result in a significant increase in the physical size of the facilities placed at those locations.