Cityweft’s Norway building dataset combines multiple high-quality building footprint sources with national DSM elevation data to generate a highly accurate and consistent 3D building layer for architectural design, planning, and city context workflows.

Building footprints are sourced from datasets such as OpenStreetMap, Microsoft Building Footprints, and other trusted regional/open datasets. These footprints are then unified and processed by Cityweft before being paired with DSM (Digital Surface Model) data from Kartverket, distributed via Geonorge as part of Norway’s national elevation model services.

Data sources

• Building footprints: OpenStreetMap, Microsoft Buildings, and other trusted open datasets
• Height data: Kartverket DSM / Digital Overflatemodell (DOM / DSM) via Geonorge

Latest update

• The dataset reflects the latest available national DSM coverage published through Kartverket/Geonorge, based on Norway’s high-resolution elevation data program and distribution services

Coverage and reliability

• Nationwide elevation coverage available through Kartverket’s national height model services
• High height fidelity based on measured surface elevation (DSM), rather than inferred or averaged heights
• DSM includes roofs, vegetation, and human-made objects, meaning that occasional edge cases may include interference from trees or temporary objects

Cityweft processing approach

This dataset relies on a unique and technically complex processing pipeline developed by Cityweft:

• Building footprints from multiple sources are merged, cleaned, and standardized
• Footprint height attributes are overridden using Kartverket DSM measurements
• Each building is extruded using maximum observed elevation values over the footprint area, producing consistent volumetric massing suitable for 3D workflows