Period Begin Date

Source

Redfin Market Data · vintage 2026 · refresh cadence: monthly

Start of the data period (typically a month or 28-day rolling)

Direction of better

No universal direction; user preference determines what is "better".

Unit

Values are reported in date.

Where the data lives

Tables: redfin_market_data

Columns: period_begin, period_end, period_duration

Input field: period_begin

JSON-LD example

Every value emitted by ValiFit (in /api/v1, MCP responses, on-page JSON-LD) carries a propertyID set to this metric_id, so AI clients can resolve it back here in one round-trip.

{
  "@type": "PropertyValue",
  "propertyID": "market.period_begin",
  "name": "Period Begin Date",
  "value": "example",
  "unitText": "date",
  "additionalProperty": [
    {
      "@type": "PropertyValue",
      "name": "composite",
      "value": "Appreciation"
    },
    {
      "@type": "PropertyValue",
      "name": "level",
      "value": "city"
    },
    {
      "@type": "PropertyValue",
      "name": "direction",
      "value": "optimize"
    },
    {
      "@type": "PropertyValue",
      "name": "source_year",
      "value": "2026"
    },
    {
      "@type": "PropertyValue",
      "name": "fha_safe",
      "value": true
    }
  ],
  "valueReference": {
    "@type": "QuantitativeValue",
    "additionalType": "https://valifit.com/catalog/metric",
    "identifier": "market.period_begin",
    "sameAs": "Redfin Market Data"
  }
}