Title 19, Chapter 8, Section 21
(a) Adult persons may be adopted on giving written consent to the
adoption. In such cases, adoption shall be by a petition duly
verified and filed, together with two conformed copies, in the
superior court in the county in which either any petitioner or the
adult to be adopted resides, setting forth the name, age, and
residence of each petitioner and of the adult to be adopted, the
name by which the adult is to be known, and his written consent to
the adoption. The court may assign the petition for hearing at any
time. After examining each petitioner and the adult sought to be
adopted, the court, if satisfied that there is no reason why the
adoption should not be granted, shall enter a decree of adoption
and, if requested, shall change the name of the adopted adult.
Thereafter, the relation between each petitioner and the adopted
adult shall be, as to their legal rights and liabilities, the
relation of parent and child.
(b) Code Section 19-8-19, relating to the effect of a decree of adoption, and Code Section 19-8-20, relating to notice of adoption, shall also apply to the adoption of adults.