Why does Casafari count properties and not advertisements?

Each record in the graph already merges every source that advertises the property, so counting advertisements would count the same home several times.

A property is often advertised by several agencies and on several portals. Casafari recognises these advertisements as one property and keeps a single record linked to all of them, so counting records means counting properties. Area Insights distributions and time series report this count as properties_count, and a comparables result returns each property once, with its number of active advertisements as a field. When you summarise supply or activity in an area, report properties.

See: The property graph and For AI agents.