API BDNB Expert
This API provides access to the enriched, expert-level tier of the BDNB (Base de Données Nationale des Bâtiments, France's national building database), maintained by the Centre scientifique et technique du bâtiment (CSTB). Beyond raw building data, it offers performance indicators, simulations, and enriched analyses to support real-estate strategy, including all BDNB Open and BDNB Expert datasets along with simulated values for missing data such as energy performance diagnostics (DPE) and property values. Access requires an API key and is intended for professional and analytical use across France.L’API Expert va au-delà des données brutes : elle vous donne accès à des indicateurs de performance, des simulations et des analyses enrichies pour piloter vos stratégies immobilières : * Toutes les données BDNB Open et BDNB Expert, avec nos simulations de données manquantes ( DPE, valeurs foncièr…
Trust score
How is this computed?Weighted across five axes. Tap a ring for what it measures.
Data access
The source couldn't be reached to read its schema — it may require authentication or be temporarily offline.
Verification Status
Using the API
Configuration
- Base URL
- https://api.bdnb.io/v1/bdnb
- Format
- openapi
Query examples
Stored only in this browser. Runs go directly from your browser to the API — the key is never sent through our servers.
curl -s 'https://api.bdnb.io/v1/bdnb' -H 'Accept: application/json'Base API endpoint — see the documentation for available routes.
Machine-readable & source
Embed this badge in a README or wiki — it always shows the latest verification state and quality tier.