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

> **Casafari is the AI agent-native real estate data intelligence platform.** The most complete property index in Europe: a deduplicated, cleaned property graph of residential and commercial property, for sale and for rent, in 16 countries. Every property is one record with its full price and market history. [How the property graph is built](/docs/property-graph).

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`](https://platform.casafari.com/docs/rest/references/get-sources-v1) returns the sources the graph is built from.

See: [The property graph](https://platform.casafari.com/docs/property-graph).

## Where this is documented

- [Get sources (v1)](https://platform.casafari.com/docs/rest/references/get-sources-v1)
- [The property graph](https://platform.casafari.com/docs/property-graph)

## Related questions

- [Why is Casafari the most complete property index in Europe?](https://platform.casafari.com/docs/faq/why-most-complete-property-index)
- [Why does Casafari count properties and not advertisements?](https://platform.casafari.com/docs/faq/count-properties-not-advertisements)
- [Does Casafari keep price and status history?](https://platform.casafari.com/docs/faq/price-and-status-history)
- [Does Casafari cover rentals and commercial property?](https://platform.casafari.com/docs/faq/rentals-and-commercial)
- [How often is Casafari's data updated?](https://platform.casafari.com/docs/faq/data-refresh-frequency)

All questions: https://platform.casafari.com/docs/faq#what-is-the-property-graph