Multi-source territorial real-estate scoring

Problem

Assess the real-estate appeal of a municipality to drive investment decisions, through a complete chain from raw data to decision.

Constraint

About ten heterogeneous sources, including authenticated platforms; ambiguity of homonymous municipalities; a long project run over 7 months.

Approach

• Integration of ~10 sources (INSEE, BPE, Sitadel…) and scrapers for authenticated platforms (Playwright / Selenium).
• Configurable scoring engine: rules externalised in Firestore, editable by administrators.
• LLM analysis producing an investment report; n8n orchestration, GCP / Firestore deployment.

Result

• Complete application in production: geocoding → reference municipality → collection → scoring → report.
• Critical homonymous-municipality bug fixed by propagating an unambiguous EPCI key from geocoding through to the interface.