N.Y. Dom. Rel. Law § 110
An adult unmarried person, an adult married couple together, or any two unmarried adult intimate partners together may adopt another person. An adult married person who is living separate and apart from his or her spouse pursuant to a decree or judgment of separation or pursuant to a written agreement of separation subscribed by the parties thereto and acknowledged or proved in the form required to entitle a deed to be recorded or an adult married person who has been living separate and apart from his or her spouse for at least three years prior to commencing an adoption proceeding may adopt another person; provided, however, that the person so adopted shall not be deemed the child or step-child of the non-adopting spouse for the purposes of inheritance or support rights or obligations or for any other purposes. An adult or minor married couple together may adopt a child of either of them born in or out of wedlock and an adult or minor spouse may adopt such a child of the other spouse. No person shall hereafter be adopted except in pursuance of this article, and in conformity with section three hundred seventy-three of the social services law.
An adult married person who has executed a legally enforceable separation agreement or is a party to a marriage in which a valid decree of separation has been entered or has been living separate and apart from his or her spouse for at least three years prior to commencing an adoption proceeding and who becomes or has been the custodian of a child placed in their care as a result of court ordered foster care may apply to such authorized agency for placement of said child with them for the purpose of adoption. Final determination of the propriety of said adoption of such foster child, however, shall be within the sole discretion of the court, as otherwise provided herein.
Adoption is the legal proceeding whereby a person takes another person into the relation of child and thereby acquires the rights and incurs the responsibilities of parent in respect of such other person.
A proceeding conducted in pursuance of this article shall constitute a judicial proceeding. An order of adoption or abrogation made therein by a surrogate or by a judge shall have the force and effect of and shall be entitled to all the presumptions attaching to a judgment rendered by a court of general jurisdiction in a common law action.
No adoption heretofore lawfully made shall be abrogated by the enactment of this article. All such adoptions shall have the effect of lawful adoptions hereunder.
Nothing in this article in regard to a minor adopted pursuant hereto inheriting from the adoptive parent applies to any will, devise or trust made or created before June twenty-fifth, eighteen hundred seventy-three, nor alters, changes or interferes with such will, devise or trust. As to any such will, devise or trust a minor adopted before that date is not an heir so as to alter estates or trusts or devises in wills so made or created. Nothing in this article in regard to an adult adopted pursuant hereto inheriting from the adoptive parent applies to any will, devise or trust made or created before April twenty-second, nineteen hundred fifteen, nor alters, changes or interferes with such will, devise or trust. As to any such will, devise or trust an adult so adopted is not an heir so as to alter estates or trusts or devises in wills so made or created.
It shall be unlawful to preclude a prospective adoptive parent or parents solely on the basis that the adoptor or adopters has had, or has cancer, or any other disease. Nothing herein shall prevent the rejection of a prospective applicant based upon his or her poor health or limited life expectancy.
A petition to adopt, pursuant to the terms of this article, where the petitioner's parentage is legally-recognized under New York State law shall not be denied solely on the basis that the petitioner's parentage is already legally-recognized.
N.Y. Dom. Rel. Law § 110