Source
County assessor records · vintage 2024 · refresh cadence: monthly
Median of last sale price across town parcels. Strong national coverage where parcel_details has sale data: NJ/CO/CT/FL/MA/MD (~60-80% of parcels).
Direction of better
Higher values are better. Used to rank candidate towns/properties; higher score = stronger fit.
Unit
Values are reported in dollars.
Default weight in Appreciation composite
8% of the Appreciation composite by default. Users can override this weight in their intake; the displayed score reflects the user's chosen weighting, never a fixed default.
Where the data lives
Tables: parcel_details, redfin_market_data
Columns: sale_price_1, sale_year
Input field: parcel_recent_sale
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": "appreciation.recent_median_sale_price_parcels",
"name": "Recent Median Sale Price (parcels)",
"value": 350000,
"unitText": "dollars",
"additionalProperty": [
{
"@type": "PropertyValue",
"name": "composite",
"value": "Appreciation"
},
{
"@type": "PropertyValue",
"name": "level",
"value": "city"
},
{
"@type": "PropertyValue",
"name": "direction",
"value": "higher_better"
},
{
"@type": "PropertyValue",
"name": "source_year",
"value": "2024"
},
{
"@type": "PropertyValue",
"name": "fha_safe",
"value": true
}
],
"valueReference": {
"@type": "QuantitativeValue",
"additionalType": "https://valifit.com/catalog/metric",
"identifier": "appreciation.recent_median_sale_price_parcels",
"sameAs": "County assessor records"
},
"mentions": [
{
"@type": "Dataset",
"@id": "https://valifit.com/sources/county-assessor",
"identifier": "COUNTY_ASSESSOR",
"name": "County Assessor + Recorder Data",
"url": "https://en.wikipedia.org/wiki/Property_tax_in_the_United_States",
"sameAs": "https://en.wikipedia.org/wiki/Property_tax_in_the_United_States",
"creator": {
"@type": "Organization",
"name": "County tax assessors (3,144 US counties)"
},
"temporalCoverage": "continuous",
"dateModified": "2026-05-11"
}
]
}For programmatic access
GET /api/v1/catalog/metrics?id=appreciation.recent_median_sale_price_parcels
MCP tool: get_catalog with id="appreciation.recent_median_sale_price_parcels"