Buildings in Helsinki

The Buildings in Helsinki data contains information on buildings from two different sources.

Map features (layer Rakennukset_alue) are based on the building areas of the base map maintained by City Survey Services. The data does not contain buildings of less than 10 square metres or building areas of negligible importance (canopies, sheds, etc., which do not have a building identifier). The map features are presented as polygons.

Register features (Rakennukset_alue_rekisteritiedot and Rakennukset_piste_rekisteritiedot) are presented in the database maintained by the various divisions of the city, which contains key building-related attributes. The register features can be selected to be presented as polygons or points.

The scale of the data is 1:500.

Parallel addresses for buildings are available on layer Helsinki_osoitteet_rakennukset.

More detailed metadata of the material and explanations of the codes.

The data is available for download in several formats, including JSON, KML, CSV, Esri Shape ja XML. Available formats can always be found under OutputFormat in the GetCapabilities query for the service. More information and instructions in guidebook “Kyselypalvelujen käyttö” (in Finnish).

Additionally, Mapinfo TAB file from 6/2012 is available. More information by clicking here.

Previewing the data in the kartta.hel.fi service:

• Buildings
• Buildings (areas)
• All base map layers can be found on the website: https://kartta.hel.fi/ > Layers > Real Estates, Unseparated Parcels and Buildings

Coordinate systems:

• Maintained in ETRS-GK25 (EPSG:3879), can be projected to other coordinate systems. See GetCapabilities query for other possible coordinate systems.

Vertical coordinate reference system:

• N2000

API addresses:

• WMS API: https://kartta.hel.fi/ws/geoserver/avoindata/wms
• WFS API: https://kartta.hel.fi/ws/geoserver/avoindata/wfs

Layers:

WMS:

• Rakennukset_alue
• Rakennukset_alue_rekisteritiedot
• Rakennukset_piste_rekisteritiedot
• Rakennustunnus_RATU
• Rakennustunnus_RATU_aloitetut
• Rakennustunnus_RATU_hankkeet
• Rakennustunnus_VTJ_PRT
• Rakennustunnus_VTJ_PRT_aloitetut
• Rakennustunnus_VTJ_PRT_hankkeet

WFS:

• Rakennukset_alue
• Rakennukset_alue_rekisteritiedot
• Rakennukset_piste_rekisteritiedot

Rakennukset_alue: attributes, data types and their key and reliability data attributes:

• id (int). Unique identifier of the feature.
• kuntarekisteri_id (int). Identification key of the municipal register (FACTA). Comprehensively existing, reliable information.
• ratu (decimal). Permanent building identifier for Helsinki, i.e. “RATU”. Comprehensively existing information. The examination is still ongoing for the areas requiring interpretation.
• vtj_prt (string). National permanent building identifier. Comprehensively existing information.
• ratu_vastaavuus (string). Correspondence of building area and identifier, verbal information. Comprehensively existing information. The correspondence examination is still ongoing for the areas requiring interpretation.
• ratu_vastaavuus_koodi (decimal). Correspondence of building area and identifier (code set VASTAAVUUS) Comprehensively existing information. The correspondence examination is still ongoing for the areas requiring interpretation.
• ratu_laatu (string). Quality of reliability of the identifier, verbal information. Comprehensively existing information. The quality examination is still ongoing for the areas requiring interpretation.
• ratu_laatu_koodi (decimal). Quality of reliability of the identifier (code set LAATU). Comprehensively existing information. The quality examination is still ongoing for the areas requiring interpretation.
• tila (string). Verbal information on the state of the building. Reliable, comprehensively existing information.
• tila_koodi (decimal). State of the building (code set OLOTILA). Reliable, comprehensively existing information.
• tyyppi (string). Type of building. Based on the classification on the base map. Reliable, comprehensively existing information.
• tyyppi_koodi (decimal). Type of building (code set TYYPPI). Based on the classification on the base map. Reliable, comprehensively existing information.
• luontipvm (date). Feature creation date (yyyy-mm-dd).
• muokkauspvm (date). Feature editing date (yyyy-mm-dd).
• katunimi_suomi (string). Street name in Finnish, primary address.
• katunimi_ruotsi (string). Street name in Swedish, primary address.
• osoitenumero (string). Assembled street address number, primary address.
• postinumero (string). Postal code area of the address, primary address.
• datanomistaja (string). Data owner organisation.
• paivitetty_tietopalveluun (date). Date of update into the information service (yyyy-mm-dd).
• geom (GeometryPropertyType). Geometry of the feature.

Rakennukset_alue_rekisteritiedot: attributes, data types and their key and reliability data attributes:

• id (int). Unique identifier of the feature.
• kuntarekisteri_id (int). Identification key of the municipal register (FACTA). Comprehensively existing, reliable information.
• kg_krakenn (int). Building ID.
• ratu (decimal). Permanent building identifier for Helsinki, i.e. “RATU”. Comprehensively existing information. The examination is still ongoing for the areas requiring interpretation.
• vtj_prt (string). National permanent building identifier. Comprehensively existing information.
• tyyppi (string). Type of building. Based on the classification on the base map. Reliable, comprehensively existing information.
• tyyppi_koodi (decimal). Type of building (code set TYYPPI). Based on the classification on the base map. Reliable, comprehensively existing information.
• tila (string). State of the building, verbal information. Reliable, comprehensively existing information.
• tila_koodi (decimal). State of the building (code set OLOTILA). Reliable, comprehensively existing information.
• ratu_vastaavuus (string). Correspondence of building area and identifier, verbal information. Comprehensively existing information. The correspondence examination is still ongoing for the areas requiring interpretation.
• ratu_vastaavuus_koodi (decimal). Correspondence of building area and identifier (code set VASTAAVUUS) Comprehensively existing information. The correspondence examination is still ongoing for the areas requiring interpretation.
• ratu_laatu (string). Quality of reliability of the identifier, verbal information. Comprehensively existing information. The quality examination is still ongoing for the areas requiring interpretation.
• ratu_laatu_koodi (decimal). Quality of reliability of the identifier (code set LAATU). Comprehensively existing information. The quality examination is still ongoing for the areas requiring interpretation.
• i_raktilav (double). Volume of the building (m3).
• i_pyraknro (int). Permanent building number.
• i_nkoord (int). North coordinate (ETRS-GK25, EPSG:3879).
• i_ekoord (int). East coordinate (ETRS-GK25, EPSG:3879).
• i_kokala (double). Total area (m2).
• i_kerrosala (double). Floor area (m2).
• i_kerrlkm (double). Number of floors.
• i_kellarala (double). Basement area (m2).
• i_huoneistojen_lkm (double). Number of flats (calculated).
• d_ashuoala (double). Space used for housing (m2).
• c_vtj_prt (string). National permanent building identifier. Comprehensively existing information.
• c_viemlii (string). Sewerage connection (x=Yes).
• c_vesilii (string). Water connection (x=Yes).
• c_valmpvm (dateTime). Completion date (yyyy-mm-ddTHH:MM:SS).
• c_sahkolii (string). Electricity connection (x=Yes).
• c_rakeaine (string). Construction material (code set RA_KANTRAKAINE).
• c_poltaine (string). Fuel (code set RA_LAMMONLAHDE).
• c_lammtapa (string). Method of heating (code set RA_LAMMITYSTAPA).
• c_kiinteistotunnus (string). Property identifier.
• c_kayttark (string). Purpose of use (code set RA_KAYTTARK).
• c_julkisivu (string). Facade material (code set RA_JUKISIVUMAT).
• c_hissi (string). Equipped with lift (x=Yes).
• katunimi_suomi (string). Street name in Finnish, primary address.
• katunimi_ruotsi (string). Street name in Swedish, primary address.
• osoitenumero (string). Assembled street address number, primary address.
• postinumero (string). Postal code area of the address, primary address.
• muokkauspvm (date). Feature editing date (yyyy-mm-dd).
• luontipvm (date). Feature creation date (yyyy-mm-dd).
• datanomistaja (string). Data owner organisation.
• paivitetty_tietopalveluun (date). Date of update into the information service (yyyy-mm-dd).
• geom (GeometryPropertyType). Geometry of the feature.

Rakennukset_piste_rekisteritiedot: attributes, data types and their key and reliability data attributes:

• id (int). Unique identifier of the feature.
• kg_krakenn (int). Building ID.
• i_pyraknro (int). Permanent building number.
• c_vtj_prt (string). National permanent building identifier. Comprehensively existing information.
• c_kiinteistotunnus (string). Property identifier.
• i_nkoord (int). North coordinate (ETRS-GK25, EPSG:3879).
• i_ekoord (int). East coordinate (ETRS-GK25, EPSG:3879).
• c_valmpvm (dateTime). Completion date (yyyy-mm-ddTHH:MM:SS).
• c_julkisivu (string). Facade material (code set RA_JUKISIVUMAT).
• i_kokala (double). Total area (m2).
• i_kerrlkm (double). Number of floors (pcs).
• i_kerrosala (double). Floor area (m2).
• i_kellarala (double). Basement area (m2).
• d_ashuoala (double). Space used for housing (m2).
• c_kayttark (string). Purpose of use (code set RA_KAYTTARK).
• c_lammtapa (string). Method of heating (code set RA_LAMMITYSTAPA).
• c_poltaine (string). Fuel (code set RA_LAMMONLAHDE).
• c_rakeaine (string). Construction material (code set RA_KANTRAKAINE).
• i_raktilav (double). Volume of the building (m3).
• c_hissi (string). Equipped with lift (x=Yes).
• c_viemlii (string). Sewerage connection (x=Yes).
• c_vesilii (string). Water connection (x=Yes).
• c_sahkolii (string). Electricity connection (x=Yes).
• i_huoneistojen_lkm (double). Number of flats (calculated) (pcs).
• katunimi_suomi (string). Street name in Finnish, primary address.
• katunimi_ruotsi (string). Street name in Swedish, primary address.
• osoitenumero (string). Assembled street address number, primary address.
• postinumero (string). Postal code area of the address, primary address.
• datanomistaja (string). Data owner organisation.
• paivitetty_tietopalveluun (date). Date of update into the information service (yyyy-mm-dd).
• geom (GeometryPropertyType). Geometry of the feature.