SITEDIA · GERMANY
About sitedia
Last updated: 15 October 2026
sitedia starts from an address and draws a set of site analysis diagrams. Choose a site and a radius: you get the buildings, their use, heights, building ages, planning data, parcels, green space and water, roads, stops, walking distance, terrain, sun and wind, in the same round or square frame for every diagram. Files download as SVG, PNG, DXF or 3D (GLB, 3DM, SKP). Measurements are in metres. The edition comes in German and English; choose at the top right of the site.
Why
Site analysis diagrams are often made by hand: capture a map, redraw buildings one by one, colour them in. In Germany much of what is needed is open: buildings and parcels from ALKIS, heights from the LoD2 3D building models, terrain from DGM1 — in Berlin through Geoportal Berlin, in Cologne through Geobasis NRW, in Stuttgart and Karlsruhe through LGL Baden-Württemberg. sitedia puts them at the same scale, in the same frame, with one legend. The analysis stays yours.
What sitedia doesn’t do
sitedia does not check a design against rules and does not tell you what can be built. Planning: For orientation only — Berlin: land-use plan (Flächennutzungsplan), development plans (Bebauungspläne) and protected areas from Geoportal Berlin; Cologne: the City of Cologne’s land-use plan and overview of development plans; Stuttgart and Karlsruhe: actual land use from ALKIS instead of statutory plans; Hamburg: land-use plan (Flächennutzungsplan) and development plan outlines; Frankfurt am Main: regional land-use plan and development plans; Darmstadt: actual land use from ALKIS; Düsseldorf, Dortmund, Essen, Duisburg, Bochum, Bonn, Mannheim, Freiburg, Heidelberg, Ulm, Leipzig, Dresden: actual land use from ALKIS, partly with development plan outlines. The municipality’s own plans are what count. An empty area does not mean no rules apply.
Parcel boundaries are a representation, not determined legal boundaries. Each source has its own date and margin of error. Building ages are estimated: per block in Berlin, from a heat planning model in Cologne, and from the 100 m grid of the 2022 census in Stuttgart and Karlsruhe. The sun, wind and thermal comfort simulations support early design: Simulation for orientation only, not legally binding.
Coverage
The Germany edition covers the city areas of Berlin, Bochum, Bonn, Cologne, Darmstadt, Dortmund, Dresden, Duisburg, Düsseldorf, Essen, Frankfurt am Main, Freiburg, Hamburg, Heidelberg, Karlsruhe, Leipzig, Mannheim, Stuttgart and Ulm. Search is by address. The data is prepared in advance; the source and date of each dataset are in the table under the diagrams.
Where the data comes from
- Berlin: Geoportal Berlin — ALKIS, LoD2 3D building models, Environmental Atlas, land-use plan and development plans, DGM1, TrueDOP (dl-de/zero-2.0); stops: VBB (CC BY 4.0).
- Cologne: Geobasis NRW — ALKIS, LoD2, DGM1, DOP (dl-de/zero-2.0); City of Cologne — land-use plan, development plans, list of monuments, tree register; LANUK NRW — heat planning model (building age), protected areas and flood zones; stops: VRS (CC BY 4.0).
- Stuttgart and Karlsruhe: Datenquelle: LGL, www.lgl-bw.de (dl-de/by-2-0) — ALKIS, house coordinates, LoD2, DGM1, nDOM1, DOP20; building age: 2022 census (Destatis); monuments: State Office for Monument Preservation; stops: NVBW.
- Base map: OpenFreeMap, © OpenMapTiles, data © OpenStreetMap contributors (ODbL); as a fallback basemap.de, © GeoBasis-DE / BKG (2026) CC BY 4.0.
- Paths and rail lines: © OpenStreetMap contributors (ODbL).
- Wind and climate: TMYx files from climate.onebuilding.org.
The full list with licences and credits is on the Data sources page. Every diagram carries its own credit line, which stays in exported files.
Who makes sitedia
sitedia is designed and run by one person, an urban designer. The service started in Korea and then gained US, Japanese, Spanish, UK, French, Netherlands and now Germany editions. If a diagram looks wrong or data is missing, the “Feedback” button on the site and [email protected] reach the maker directly.