What is the Casafari property graph, and where does the data come from?

The property graph is Casafari's data model: it collects property advertisements from agency websites and portals as they appear and change, then structures, cleans, deduplicates and merges them into one record per property.

1. Collect: gather advertisements from agency websites and portals as they appear and as they change.
2. Structure: map each advertisement to a single schema covering type, operation, price, area, rooms, features, condition, energy rating and location.
3. Clean: normalise values, resolve places to the location tree and to coordinates, and flag outliers.
4. Deduplicate: recognise a property advertised by several agencies and portals as one property.
5. Merge: build one record per property that links its advertisements, agencies, agents, location and history.

Residential and commercial properties, for sale and for rent, share one schema and one location tree. GET /api/v1/references/sources returns the sources the graph is built from.

See: The property graph.