WMS API

From the dataset abstract

The detailed plans index map (detailed plans situation map) of Helsinki is a combined map of the city’s valid detailed plans. The index map describes the boundaries, numbers and dates of the detailed plans. The identifiers of the detailed plans are stored in such a way that each 1:2,000 sheet shows the number and date of the detailed plan.

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 Kyselypalveluiden käyttö (in Finnish).

The area types in the data comprise the following area classifications:

• Detailed plans; Under planning/Valid
• Underground detailed plans; Under planning/Valid
• Decisions of name changes; Under planning/Valid
• Name changes approved by the City Board (due to the Sipoo annexation)

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

• kartta.hel.fi

Coordinate systems:

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

API addresses:

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

Layers:

WMS:

• Kaavahakemisto (only WMS, all layers at the same time)
• Kaavahakemisto_viiteviivat
• Kaavahakemisto_tunnus_kaava_voimassa
• Kaavahakemisto_tunnus_kaava_vireilla
• Kaavahakemisto_alue_kumottu
• Kaavahakemisto_tunnus_maanalainenkaava_voimassa
• Kaavahakemisto_tunnus_maanalainenkaava_vireilla
• Kaavahakemisto_tunnus_nimenmuutospaatos_voimassa
• Kaavahakemisto_tunnus_nimenmuutoskaava_voimassa
• Kaavahakemisto_viiteviivat

WFS:

• Kaavahakemisto_alue_kaava_voimassa
• Kaavahakemisto_alue_kaava_vireilla
• Kaavahakemisto_alue_kumottu
• Kaavahakemisto_alue_maanalainenkaava_voimassa
• Kaavahakemisto_alue_maanalainenkaava_vireilla
• Kaavahakemisto_alue_nimenmuutospaatos_voimassa
• Kaavahakemisto_alue_nimenmuutoskaava_voimassa

Plans index: attributes, data types and their key and reliability attributes:

• id (int). Unique identifier of the feature. Reliable, comprehensively existing information.
• tyyppi (string). Type of detailed plan. Reliable, comprehensively existing information.
• kaavatunnus (string). Identification of the detailed plan. Reliable, comprehensively existing information.
• luokka (string). Class describing the status of the detailed plan. Reliable, comprehensively existing information.
• alkuperainen (string). Status describing the history of the detailed plan. Reliable, comprehensively existing information.
• pintaala (decimal). Area covered by the detailed plan. The unit of area is square metre. Reliable, comprehensively existing information.
• korkeusjarjestelma (string). The altitude system used in the detailed plan. In plans after 12/2012, the altitude system is mainly N2000, and in the older plans, it is NN. Reliable, comprehensively existing information.
• sijaintialue (string). Location area. Reliable, comprehensively existing information.
• hyvaksymispvm (string). Date of approval of the detailed plan. Reliable, comprehensively existing information.
• lainvoimaisuuspvm (date). Validity date of the detailed plan (yyyy-mm-dd). Reliable, comprehensively existing information.
• voimaantulopvm (date). Date of entry into force of the detailed plan (yyyy-mm-dd). Reliable, comprehensively existing information.
• vahvistamispvm (date). Approval date of the detailed plan (yyyy-mm-dd). Reliable, comprehensively existing information.
• luontipvm (date). Feature creation date (yyyy-mm-dd). Reliable, comprehensively existing information.
• muokkauspvm (date). Previous editing date of the feature (yyyy-mm-dd). Reliable, comprehensively existing information.
• datanomistaja (string). Owner of data. Reliable, comprehensively existing information.
• paivitetty_tietopalveluun (date). Stored in the information service, date (yyyy-mm-dd). Reliable, comprehensively existing information.
• geom (GeometryPropertyType). Geometry of the feature.

Source: Helsingin asemakaavahakemistokartta (asemakaavahakemisto)