Section 803 - Alterations or replacements of structures by person having estate for life or years1. When a person having an estate for life or for years in land proposes to make an alteration in, or a replacement of a structure or structures located thereon, then the owner of a future interest in such land can neither recover damages for, nor enjoin the alteration or replacement, if the person proposing to make such alteration or replacement complies with the requirements hereinafter stated as to the giving of security and establishes the following facts: a. That the proposed alteration or replacement is one which a prudent owner of an estate in fee simple absolute in the affected land would be likely to make in view of the conditions existing on or in the neighborhood of the affected land; and b.That the proposed alteration or replacement, when completed, will not reduce the market value of the interests in such land subsequent to the estate for life or for years; and c.That the proposed alteration or replacement is not in violation of the terms of any agreement or other instrument regulating the conduct of the owner of the estate for life or for years or restricting the land in question; and d.That the life expectancy of the owner of the estate for life or the unexpired term of the estate for years is not less than five years; and e.That the person proposing to make such alteration or replacement, not less than thirty days prior to commencement thereof, served upon each owner of a future interest, who is in being and ascertained, a written notice of his intention to make such alteration or replacement, specifying the nature thereof, which notice was served personally or by registered mail sent to the last known address of each such owner of a future interest. 2. When the owner of a future interest in the affected land demands security that the proposed alteration or replacement, if begun, will be completed and that he be protected against responsibility for expenditures incident to the making of the proposed alteration or replacement, the court in which the action to recover damages or to enjoin the alteration or replacement is pending, or if no such action is pending, the supreme court, on application thereto, on such notice to the interested parties as the court may direct, shall fix the amount and terms of the security reasonably necessary to satisfy such demand. The furnishing of the security so fixed shall be a condition precedent to the making of the proposed alteration or replacement.3. This section applies only to estates for life or for years created on or after September 1, 1937.N.Y. Real Prop. Acts. Law § 803