In the service is available a building classification catalog. The catalog was created based on Cabinet of Ministers regulations no. 326 "Rules for classification of buildings". In the catalog, you can view building types - code, name, description and real estate transactions corresponding to the code.

221201 | Main water supply pipelines

22120101
Water pipes with an internal diameter of 150 to 300 mm (included)
22120102
Water pipes with an internal diameter of 300 to 600 mm (included)
22120103
Water pipes with an internal diameter of 600 to 900 mm (included)
22120104
Water pipes with an internal diameter greater than 900 mm

Data source and license: Regulations of the Cabinet of Ministers 12.06.2018. no. 326 "Rules for building classification", Open data of the real estate market database, Open data of the cadastral information system, open data license: Creative Commons Attribution