Description

The 13^th International FIG Workshop on the Land Administration Domain Model & 3D Land Administration will take place in Florianópolis, Santa Catarina, Brazil, 3-5 November 2025. It will be a joint event together with

1. FIG Commission 7 (Cadastre and Land Management) Annual Meeting,
2. FIG Commission 8 (Spatial Planning and Development) Annual Meeting,
3. UN Habitat Social Tenure Domain Model (STDM)
4. FIG Workshop on the Land Administration Domain Model & 3D Land Administration

The team of local organizers are from Universidade Federal de Santa Catarina (UFSC), Florianópolis, Brazil. More information and registration for the joint event is available at FIG Brasil.

Workshop purpose: The workshop aims to bring together experts from the industry, government, and academia, to present and discuss LADM and/or 3D LA related developments including live demonstrations of LADM implementations (operational systems, pilots, prototypes). The workshop will also cover informal or customary rights (, restrictions, responsibilities) as exiting in many countries, next to the more formal rights that are being registered. UN-Habitat is using the LADM specialization STDM (Social Tenure Domain Model) in 17 countries to register these informal/customary rights. Also, UN-FAO (Food and Agriculture Organization)'s SOLA (Solutions for Open Land Administration)/Open Tenure and USAID's MAST (Mobile Applications to Secure Tenure) information models are all based on LADM. Speakers who want to share their experiences on implementation are cordially invited to participate. This workshop will provide solid input to the "Implementation" part of Edition II of LADM, to be developed in collaboration with OGC. The workshop should enable making important choices, such as the technical encodings.

3D Land Administration: The increasing complexity of infrastructures and densely built-up areas requires a proper registration of the legal status (private and public), which can only be provided to a limited extent by the existing 2D cadastral registrations. The registration of the legal status in complex 3D situations will be investigated under the header of 3D Land Administration. The Workshop on the Land Administration Domain Model / 3D Land Administration addresses developments in the following areas:

• 3D Land Administration System operational experiences (analysis, LADM based, learn from each other, discover gaps)
• 3D LAS cost effective workflow for new / updated 3D parcels = 4D (part of whole spatial development lifecycle: from planning / design / permit in 3D, to registration / use in 3D)
• Legal aspects for 3D LAS, best legal practices in various legislation systems
• BIM/IFC use and guidelines for design sources (LA_DesignSource)
• Remote sensing (including LiDAR) and artificial intelligence (AI) for efficient 3D cadastral boundary extraction in the survey sources (LA_SurveySource)
• Proposals for (and evaluations of) LA (remote) sensing information models and data processing workflows
• 3D LAS web-based dissemination (usability, man-machine interfaces, including mobile/AR)
• Focus on large cities, including developing countries
• LADM specializations for customary RRRs, such as STDM, SOLA/Open Tenure, MAST (possibly with attention for 3D and valuation)
• 3D in the revision of ISO 19152, the Land Administration Domain Model

LADM Revision: ISO TC211 has decided in 2018 on revising LADM, and this was and is an unique opportunity to further develop LADM with new, additional functionalities, such as: a refined (3D) survey and legal model, semantically rich code lists, marine space geo-regulations, valuation information, spatial plan information, and the various implementation aspects. This forms the backbone of a nations land information infrastructure. The usage of active and passive remote sensing techniques such as RGB and multispectral sensors, LiDAR, RADAR etc. have resulted in progress in efficiency and accuracy of spatial data aquisition workflows. In addition, artificial intelligence (AI) methods have been extensively explored and tested for cadastral boundary extraction. Due to growing scope LADM edition II is a multipart standards, in 2024 parts 1 (Generic Conceptual Model) and 3 (Marine Georegulation) have been published. It is expected that the parts 2 (Land Registration), 4 (Valuation Information), and 5 (Spatial Plan Information) will be published in 2025. It is now time capture the implementation knowledge and include this in the future edition of LADM (part 6 Implementation). Part 6 development is planned to be started in 2025 as a joint activity of ISO TC211 and OGC (SWG LADM). The Land Administration Domain Model is gaining recognition in many countries. More than ten years after the publication of the first edition, there are already country profiles from many countries - of which a large number have implemented (or are implementing) LADM. Software suppliers are adopting LADM and implementing it. The existing edition of LADM standard does not pay attention to implementation aspects. It can be done in various ways, and several platforms and encodings can be used. What are the experiences so far? What have we learned and what can be re-used? What are the pitfalls and risks? LADM is currently just a conceptual model and the steps towards implementation include elaborating (via a country profile) and realizing a technical model suitable for implementation: database schema (SQL DDL), exchange format (GeoJSON, INTERLIS, RDF, XML/GML, ), and user interface for edit and dissemination. A good option for this is the collaboration between FIG, ISPRS, IHO, ISO and OGC to also standardize these implementation aspects of LADM as part 6.