Spatial representation of condominium / co-ownership : comparison ofQuebec and French cadastral system based on LADM specifications
Pouliot, Jacynthe et al.
In order to progress towards a better cadastral management system that integrates the 3rd dimension the paper compares the situation of the 3D representation of vertical divided co-ownership between Quebec and French jurisdictions. Some part of the comparison analysis is made based upon the land administration data model (LADM) specifications. LADM schematizations of the spatial representation of vertical divided co-ownership adopted by both jurisdictions are consequently proposed. The comparison first indicates that both jurisdictions propose the production of external draws to support the cadastral plan when overlapping real properties exist. These co-ownership plans are produced and managed outside the cadastral system, which could somehow reduce its access by users. Quebec proposes a systematic process to produce these co-ownership plans where a specific number showed on the cadastral plan indicates the presence of overlapping properties. From French cadastral plans there is no direct way to discern the presence of overlapping properties. French jurisdiction also proposes the production of co-ownership plans but this is not mandatory and thus the content may differ from one land-surveyor to another. Quebec jurisdiction proposes a system that allows the construction of 3D spatial representation and some 3D information are available (e.g. volume) while French system does not. Even though both systems are French speaking, some significant semantic conflicts were notified, more especially about the term 'lot'.
Event: 2nd International Workshop on 3D Cadastres
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