Price dropped or raised

property.price_changed · Planned: built in order of demand

What it is

Public: from open or licensed sources, shared by everyone who subscribes.

Example: Price dropped 6% on a flat in Madrid
Standard envelope; a typed payload schema comes with its first source
Not collected yet: ask for it and it moves up the list

Used for

Catch property auctions and listings first

Example event, standard format

{
  "specversion": "1.0",
  "id": "evt_01M5EV0NM0N2DE68P47PV67KKM",
  "type": "property.price_changed",
  "source": "/sources/examples/property",
  "time": "2026-10-21T09:00:00Z",
  "observed_at": "2026-10-21T09:00:42Z",
  "dataschema": "https://schemas.worldsignals.dev/property.price_changed/1.json",
  "datacontenttype": "application/json",
  "visibility": "public",
  "country": "ES",
  "region": "ES-MD",
  "place": {
    "locality": "Madrid",
    "address": "Calle Mayor, Madrid",
    "precision": "address"
  },
  "subject": {
    "kind": "property",
    "name": "Flat, Calle Mayor",
    "ws_id": "ent_01M5EV0NM0NYA35Y6ER2KXVB8E"
  },
  "title": "Price dropped 6% on a flat in Madrid",
  "data": {
    "changes": [
      {
        "field": "price",
        "from": {
          "amount": "520000.00",
          "currency": "EUR",
          "amount_eur": "520000.00",
          "fx_date": "2026-10-21"
        },
        "to": {
          "amount": "489000.00",
          "currency": "EUR",
          "amount_eur": "489000.00",
          "fx_date": "2026-10-21"
        }
      }
    ]
  },
  "provenance": {
    "source_id": "example",
    "source_name": "Example data",
    "url": "https://example.com/worldsignals/property.price_changed",
    "licence": "Example only, not a real record",
    "method": "example"
  },
  "confidence": 0.95,
  "personal_data": false,
  "revision": 1,
  "tags": [
    "example"
  ]
}

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