Open APIs

Löydä kaikki pääkaupunkiseudun avoimet rajapinnat täältä!

• Real Estates in the City of Helsinki

  The dataset includes the up-to-date partition of real estate in the administrative area of the City of Helsinki and a limited set of attributes extracted from the municipal...

  • PNG
  • WMS
  • WFS

• Unseparated parcels in the City of Helsinki

  The dataset includes the unseparated parcels in the administrative area of the City of Helsinki and a limited set of attributes extracted from the municipal register. Parcel...

  • WMS
  • WFS

• Building prohibitions map of the City of Helsinki

  The building prohibitions dataset is a thematic map compiled by the City Survey Services of the City of Helsinki’s Urban Environment Division on the city’s existing building...

  • WMS
  • WFS

• Resource reservation system for City of Espoo

  An API for making resource reservations, such as booking a practice room or a meeting space. API location: https://api.hel.fi/respa/v1/ Reservation booking system or Respa is a...

  • JSON

• The Issue Reporting API of the City of Espoo

  You can use the feedback API to retrieve feedback data of the City of Espoo in a uniform format. You can search the API based on, for example, the date, location and keywords....

  • XML

• Pictorial map of the City of Helsinki

  The pictorial map is a bird’s-eye view map of the inner city of Helsinki. Buildings and other features are presented in 3D. The map covers the southern inner city of Helsinki....

  • TIFF
  • PNG
  • WMS

• Base map of the City of Helsinki

  The base map of Helsinki is a large-scale (1:500) map maintained by the Urban Environment Division’s City Survey Services and used as a basis for city planning and civil...

  • PNG
  • WMS

• Cadastral Map of the City of Helsinki

  The cadastral map of Helsinki is a general terrain map showing the property codes and boundaries in the administrative area of the City of Helsinki. The cadastral map also...

  • PNG
  • WMS
  • WMTS

• School history database of Helsinki

  Koulurekisteri is the school history database operated by the Helsinki City Archives. It is the most comprehensive listing available of the history of all schools in the City of...

  • JSON

• Helsinki's nature information system

  With the Nature Information System, you can get to know the diverse nature of Helsinki. The most important natural resources of the system are nature conservation sites,...

  • WMS
  • WFS

• Historical detailed plan maps of the city of Helsinki

  Old detailed plans of Helsinki. The detailed plan maps for years 1820, 1838 and 1878 can be downloaded as TIFF-files. The guidemaps for all years can be found through WMS API....

  • TIFF
  • WMS

• Linked Events Espoo API

  You can use Espoo’s Linked Events API to retrieve event data of several City of Espoo departments and institutions and the Helmet library service in a uniform format. The...

  • JSON

• Air quality monitoring sites and annual nitrogen dioxide (NO2) averages in the Helsinki metropolitan area

  Monitoring site data includes permanent monitoring sites, mobile monitoring sites and passive samplers, as well as the annual average concentrations (μg/m3) of nitrogen dioxide...

  • WFS
  • WMS
  • XLSX
  • SHP
  • TAB

• Combined Detailed Plan Map of The City of Espoo

  The confirmed town plan of Espoo includes the valid plan symbol at each location. However, the exact meanings of the plan symbols vary between town plans. Therefore, the reader...

  • WMS
  • GEOTIFF

• Guide Map of Helsinki Metropolitan Area

  The guide map of the Helsinki Metropolitan Area is a map of the area with a generalised documentation technique, produced to assist in positioning and guidance. The guide map is...

  • TIFF
  • WMS

• Housing production in the Helsinki region 2012-2015

  The material contains location-specific data collected on a calendar year basis on housing production in the Helsinki region in 2012-2015. The data covers the 14 municipalities...

  • WFS
  • SHP
  • TAB
  • CSV

• Floor area of housing in new city plans for the Helsinki region 2012–2015

  The material contains approved, legally valid and proposed city plans in the Helsinki region in 2012–2015 in geographic dataset. The Helsinki Region Environmental Services...

  • SHP
  • TAB
  • CSV
  • WFS
  • WMS

• Resource reservation API for City of Helsinki

  Note (12/2024): Due to a technical update, the resource reservation API is currently not available. A new API is being discussed. An API for making resource reservations, such...

• The prioritised winter maintenance network for pedestrians and cyclists in the City of Helsinki

  The prioritised winter maintenance network for pedestrians and cyclists in Helsinki includes routes where sweeping and salting and intensified maintenance are used in winter...

  • WMS
  • WFS
  • CSV

• District division of the City of Espoo

  This dataset provides the district division of the City of Espoo. The district division has three levels, from smallest to largest (in Finnish): pienalueet, tilastoalueet and...

  • WFS