A Database-Driven Architecture for Integrating and Serving 3D Condominium and Cadastral Information: The CondoMaps Platform

Three-dimensional condominium information systems require more than visual building models: spatial objects must be constructed from authoritative plans and linked consistently to cadastral, registration, building, unit, parcel, and juristic-person records. This study presents CondoMaps, a database-driven architecture for constructing, organizing, and serving 3D condominium information in Thailand. The workflow transforms verified floor plans and cadastral references into georeferenced LOD2 building and unit geometries, assigns persistent project–building–floor–unit identifiers, stores administrative and legal attributes in a normalized relational database, and publishes the integrated objects through controlled map, scene, query, and REST services. The accepted production snapshot contains 7,150 condominium projects, more than 180,000 units, over 650 LOD2 buildings, at least 6,500 contextual LOD1 buildings, 194,304 spatial features, and 457,936 linked attribute records. The combined database and file repository occupies approximately 6 TB and supports 48 published services across 22 land-office branches. Quality checks on the accepted snapshot found complete mandatory documentation and fields, no duplicate normalized keys, and no orphan records in the reported integrity tests. Linkage rates of 100% apply only to the specified sets of 7,150 evaluated records or objects and are not estimates for all units. Horizontal RMSE values of 0.0775 m and 0.031674 m were obtained in two four-control-point plan rectification cases; they are case-level results, not evidence of repository-wide positional accuracy. A browser implementation demonstrates retrieval of associated unit, juristic-person, coordinate, title-deed, and parcel-survey information from a selected 3D building. The contribution is the traceable end-to-end linkage among source documents, normalized records, identifiable 3D objects, and governed web services rather than visualization alone. Performance and formal security benchmarks remain future work.

@article{Boonlua2026,
  title     = {A Database-Driven Architecture for Integrating and Serving 3D Condominium and Cadastral Information: The CondoMaps Platform},
  journal   = {International Journal of Advanced Computer Science and Applications},
  volume    = {17},
  number    = {8},
  year      = {2026},
  publisher = {The Science and Information Organization},
  author    = {Tarawut Boonlua and Kritsanu Palopakorn and Sontaya Ratanatip and Somporn Wongjampa and Praewpan Pasanam and Viparat Nupattaya and Ketut Tomy Suhari},
  doi       = {10.14569/IJACSA.2026.0170885},
  url       = {https://doi.org/10.14569/IJACSA.2026.0170885}
}