P.R. Laws tit. 28, § 31k
Properties acquired by the titleholder for the alienation of which §§ 31—31o of this title have not established a sale price, shall be alienated for their market value as assessed for that purpose by the titleholder following the procedures established in §§ 31—31o of this title. In the cases in which the land acquired by the Commonwealth through voluntary assignment to be used for a specific public purpose, such lands shall revert gratuitously to their former owner or to his/her heirs, should the donor have revoked said donation within the prescriptive term established, if the property was not destined to be used for such a specific public purpose, or in case the aforesaid had ceased within the twenty (20) year period following the date of alienation.
This shall not apply in those cases regarding transfers required by the Planning Board or any other Commonwealth agency. It is further provided that in those cases in which the Commonwealth owns land where structures belonging to private persons are built, notwithstanding the manner in which the land was obtained, and for which no provision has been included in §§ 31—31o of this title, the provisions of the Civil Code shall apply in absence of an applicable law or statute.
History —Dec. 10, 1975, No. 12, p. 964, § 12; July 2, 1987, No. 82, p. 291, § 8; Aug. 18, 1989, No. 76, p. 336, § 4; Dec. 24, 1991, No. 122, § 4.