Redfin Valuation API

openapi: 3.1.0
info:
  title: Redfin Data Center CSV Export Valuation API
  description: The Redfin Data Center provides downloadable housing market data for metropolitan areas, cities, neighborhoods, and zip codes across the United States. Data is available at national, metro, state, county, city, zip code, and neighborhood levels. Weekly data is updated every Wednesday with new data for the prior week, computed as rolling 1, 4, or 12-week windows. Monthly data is released during the Friday of the third full week of each month. Datasets cover median sale prices, homes sold, new listings, days on market, inventory levels, and price drops. Data is provided in compressed TSV format hosted on Amazon S3.
  version: 1.0.0
  contact:
    name: Redfin Economics Team
    url: https://www.redfin.com/news/data-center/
  termsOfService: https://www.redfin.com/about/terms-of-use
servers:
- url: https://redfin-public-data.s3.us-west-2.amazonaws.com
  description: Redfin Public Data S3 Bucket
tags:
- name: Valuation
  description: Endpoints for automated valuation model (AVM) data and estimates.
paths:
  /api/home/details/avmHistoricalData:
    get:
      operationId: getAvmHistoricalData
      summary: Get AVM historical valuation data
      description: Retrieves historical automated valuation model (AVM) data for a property, including Redfin Estimate history over time. Returns time-series data showing estimated property values at various points in history.
      tags:
      - Valuation
      parameters:
      - $ref: '#/components/parameters/propertyId'
      - $ref: '#/components/parameters/accessLevel'
      - name: type
        in: query
        description: The type of AVM data to retrieve, such as estimate type or valuation model variant.
        schema:
          type: string
      responses:
        '200':
          description: Historical AVM valuation data
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AvmHistoricalDataResponse'
components:
  schemas:
    AvmHistoricalDataResponse:
      type: object
      description: Response containing historical AVM (Automated Valuation Model) data.
      properties:
        resultCode:
          type: integer
          description: API result code indicating success or failure.
        payload:
          type: object
          description: Response payload containing historical valuation data.
          properties:
            dataPoints:
              type: array
              description: Time-series valuation data points.
              items:
                type: object
                properties:
                  timestamp:
                    type: integer
                    description: Unix timestamp for the data point.
                  value:
                    type: number
                    description: Estimated property value at this point in time.
  parameters:
    accessLevel:
      name: accessLevel
      in: query
      description: The access level for the request, controlling the detail of data returned. Common value is 1.
      schema:
        type: integer
        default: 1
    propertyId:
      name: propertyId
      in: query
      required: true
      description: The unique Redfin property identifier.
      schema:
        type: integer
externalDocs:
  description: Redfin Data Center Documentation
  url: https://www.redfin.com/news/data-center/