Further Modelling of LADM’s Rights, Restrictions and Responsibilities (RRRs)

tThis paper proposes a more detailed classification of the legal part of the Land Administration DomainModel (LADM), ISO 19152 (i.e. interests in land), than described in the current standard by furtherdeveloping the LADM’s ‘right’, ‘restriction’ and ‘responsibility’ (RRR) class and associated code lists.Besides the more obvious formal right descriptions, this paper also deals with informal rights’ descrip-tions as introduced in the Social Tenure Domain Model (STDM) as a foundation for further LADMdevelopment.The authors base their research on the Legal Cadastral Domain Model, as developed by and described inthe Ph.D. thesis of Paasch, which is used as a conceptual basis for adding an additional level to the LADM.Interests in land can be classified in this model as limiting or beneficial to real property ownership. Theextended classification is further based on the paradigm that there are two major types of interest inland, privately agreed interests and regulations imposed by a public agency.The incorporation of a specialized classification of RRRs in the LADM is of value for more inclusion ofsocial tenure in (inter-)national land administration registers. The LADM allows national profiles to beadded to the standard, however, such profiles are relevant within a country. These profiles are neededin cases where detailed data of interests in land have to be exchanged internationally. International dataexchange requires maintenance of code tables representing the different RRRs in use within countries.OICRF has announced an initiative in support to this.