Credits
Sous Zinc reuses open public data and free software. None of these sources endorses Sous Zinc or its estimates.
Data
- ADEME, energy certificates of existing dwellings
- The summer comfort of every Paris energy certificate.
- Licence: Licence Ouverte 2.0 (Etalab Open Licence)
- Data retrieved on October 19, 2026.
- BDNB, CSTB
- The buildings, their features, their addresses and their links to energy certificates.
- Licence: Licence Ouverte 2.0 (Etalab Open Licence)
- Release 2026-02.a, imported on October 19, 2026.
- IRIS boundaries, © IGN and INSEE
- The Paris neighbourhoods, for the map seen from afar.
- Licence: Licence Ouverte 2.0 (Etalab Open Licence)
- Edition of 2026-01-01, imported on October 19, 2026.
- Cerema, local climate zones
- Each building’s surroundings, shown beside the estimate.
- Licence: Licence Ouverte 2.0 (Etalab Open Licence)
- Version SPOT 2022, 2024-12-10, imported on October 19, 2026.
- IGN Géoplateforme, national address base (BAN)
- Address search, queried at each search.
- Licence: Géoplateforme terms of use, Licence Ouverte 2.0 for the national address base
- Météo-France, heat-wave warnings
- The heat-wave warning level of Paris, read every hour: it switches on the site’s heat-wave mode.
- Licence: Licence Ouverte 2.0 (Etalab Open Licence)
- Latest bulletin read: October 19, 2026, 16:04.
- Data from OpenStreetMap
- The streets, water, parks and place names of the base map.
- Licence: Open Database License 1.0
Fonts
Anybody (The Anybody Project Authors) and Atkinson Hyperlegible Next (The Atkinson Hyperlegible Next Project Authors), under the SIL Open Font License 1.1.
Read the licence and the copyright notices
Software
The map uses MapLibre GL JS (three-clause BSD licence) and Tabler icons (MIT licence). The site is built with Symfony (MIT licence).