Building Roof Geometries with Elevation Data for Québec

Building roof representations in 2.5D planimetry combine 2D shapes with altimetry information. The dataset is provided by the Government and Municipalities of Québec and was last updated on April 22, 2026. It is available in SHP and GPKG file formats under a CC-BY-4.0 license.

Use Cases

• Generate 3D city models based on 2.5D building roof representations.
• Analyze building height distributions and urban density using the altimetry information.
• Perform shadow casting or solar potential analysis based on roof geometry and elevation.
• Integrate building footprints into broader geospatial analyses for urban infrastructure planning.

Strengths

• Data is provided by an authoritative government source, the Government and Municipalities of Québec.
• Includes both 2D planimetry and altimetry (elevation) information for building roofs.
• Available in standard geospatial formats (SHP, GPKG) for interoperability.
• Released under a permissive CC-BY-4.0 license for reuse.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and dataset size are unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Government and Municipalities of Québec | Gouvernement et municipalités du Québec

Collection Method

Likely derived from aerial or satellite imagery and LiDAR data.

Time Range

null

Freshness

Last updated 2026-04-22 19:10:04.488309; freshness should be verified.

Geography

Québec, Canada