The Land Administration Domain Model - An Overview
Christiaan Lemmen, Peter van Oosterom, Abdullah Kara, Eftychia Kalogianni
FIG Publication NO 84
This publication marks the first time FIG provides an overview publication of the decades-long efforts to provide a generic, accessible, and available Land Administration Domain Model (LADM). The various reports and academic papers relating to LADM are numerous, each focussing on different aspects. This publication seeks to give a summarised view of the background, but, also introduction to LADM for a larger audience, especially management.
After ISO publishing the first edition in 2012 with a focus on land tenure, a revised edition has now been virtually completed. In addition to land tenure, this edition now also focuses on land value and planned land use.
In this publication the following questions are addressed:
What is LADM?
The LADM standard is a universal, conceptual information model that covers basic information-related components of land administration. It involves information on ‘people to land relationships’. Its history is briefly reviewed.
Why LADM is needed?
Responsible stakeholders as surveyors, notaries, lawyers, planners, valuers, bank employees,
brokers, colleagues in governments and citizens must share a common view of land administration. LADM provides this view. It serves as a common language that can be used by experts from different disciplines for land policy development and for land administration system and information infrastructure development and operation (information storage). It contributes to achieving the global agenda.
Which LADM demands are there?
The development of an LADM is based on user demands, providing a solid foundation.
These demands are derived from global guidelines and requirements, as well as from the outcomes of several LADM and 3D Cadastre workshops. The general demands are briefly outlined, along with more specific demands from the perspectives of land tenure, land value, and planned land use.
How does LADM look?
The components are sub-models (called LADM packages) on parties, RRRs (rights, restrictions
and responsibilities), spatial units, land survey, valuation information and spatial plan information on planned land use.
What are LADM benefits?
The key benefit is that a common language, a terminology is available now for communication
between all experts, especially between land administrators and experts from the GIS and DBMS industry. Further benefits are in the possible use of country profiles, participatory approaches and the management of conflicts. LADM supports the creation of nationwide overview of responsibilities and required coordination in land administration.
Conclusions and recommendations
Conclusions and recommendations with proposals for future developments are given.
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