The intention of this Decree-Law is to enable, exceptionally, the State or the local government to acquire the ownership of private estates, through expropriation for public interest determined by Article 4 of the Decree-Law, against immediate, complete and absolute compensation. The compensation can be an other estate or money or both of them. The expropriation procedure is duty of the territorially competent commissary of the Republic. Proceedings are ruled in detail.