ATTOM Sales & Deed API

openapi: 3.0.3
info:
  title: ATTOM API
  description: >-
    The ATTOM API (delivered as ATTOM Cloud) provides REST access to ATTOM Data
    Solutions' national warehouse of property, real estate, and location data
    covering 158+ million U.S. properties. Resources are queried by address,
    APN + FIPS, ATTOM ID, radius around coordinates, or geoIdV4, and cover
    property characteristics, tax assessments, automated valuations (AVM),
    sales and deed history, mortgage records, area and boundary geographies,
    schools, community/neighborhood data, points of interest, transportation
    noise, consolidated all-event history, and home equity.

    Every request requires an API key passed in the `apikey` header. The URI
    pattern for the classic Property API is
    `{base}/propertyapi/v1.0.0/{resource}/{package}?{query}`; version 4 (v4)
    endpoints drop the component name and use a simplified `{base}/v4/{resource}`
    form. Area geography endpoints live under `areaapi/v2.0.0`.

    Endpoints under `propertyapi/v1.0.0` (property, assessment, avm, sale,
    saleshistory, salestrend, school, allevents, valuation) are grounded in
    ATTOM's published endpoint reference. The v4 community, POI, area/boundary,
    and transportation-noise operations are modeled from ATTOM's documented
    resource groups; confirm exact query parameters against the live docs.
  version: '1.0.0'
  contact:
    name: ATTOM Data Solutions
    url: https://www.attomdata.com
  x-logo:
    url: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
servers:
  - url: https://api.gateway.attomdata.com
    description: ATTOM API gateway (production)
security:
  - apiKeyAuth: []
tags:
  - name: Property
    description: Core property characteristics packages.
  - name: Assessment
    description: County tax assessment data.
  - name: Valuation
    description: Automated Valuation Model (AVM) and rental value.
  - name: Sales
    description: Recorded sale, deed, sales history, and sales trend data.
  - name: Mortgage
    description: Property records enriched with mortgage and owner data.
  - name: School
    description: Schools, school districts, and attendance zones.
  - name: Area
    description: Area geography, geoId lookups, and boundaries (v2/v4).
  - name: Community
    description: Neighborhood and community context (v4).
  - name: POI
    description: Points of interest (v4).
  - name: Transportation Noise
    description: Modeled transportation-noise scores.
  - name: Events
    description: Consolidated all-event property history.
  - name: Home Equity
    description: Estimated home equity and loan-to-value.
paths:
  /propertyapi/v1.0.0/property/id:
    get:
      operationId: getPropertyId
      tags: [Property]
      summary: Property ID lookup
      description: Returns the ATTOM-assigned property ID and minimal identity fields for matching properties.
      parameters:
        - $ref: '#/components/parameters/Address'
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/PageSize'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '400': { $ref: '#/components/responses/BadRequest' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/property/basicprofile:
    get:
      operationId: getPropertyBasicProfile
      tags: [Property]
      summary: Property basic profile
      description: Essential property profile - address, location, lot, and building basics - for a specific address or APN/FIPS.
      parameters:
        - $ref: '#/components/parameters/Address'
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/Apn'
        - $ref: '#/components/parameters/Fips'
        - $ref: '#/components/parameters/AttomId'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '400': { $ref: '#/components/responses/BadRequest' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/property/detail:
    get:
      operationId: getPropertyDetail
      tags: [Property]
      summary: Property detail
      description: Comprehensive property characteristics for a property or list of properties.
      parameters:
        - $ref: '#/components/parameters/Address'
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/AttomId'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/property/expandedprofile:
    get:
      operationId: getPropertyExpandedProfile
      tags: [Property]
      summary: Property expanded profile
      description: Extended property profile combining characteristics, most-recent sale, assessment, and AVM in one call.
      parameters:
        - $ref: '#/components/parameters/Address'
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/property/address:
    get:
      operationId: getPropertyAddress
      tags: [Property]
      summary: Property address radius search
      description: Radius search returning all properties within a given radius (miles) of coordinates or a postal code.
      parameters:
        - $ref: '#/components/parameters/Latitude'
        - $ref: '#/components/parameters/Longitude'
        - $ref: '#/components/parameters/Radius'
        - $ref: '#/components/parameters/PostalCode'
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PageSize'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/property/snapshot:
    get:
      operationId: getPropertySnapshot
      tags: [Property]
      summary: Property snapshot
      description: Returns properties in an area matching characteristic filters such as beds, baths, size, value, and lot size.
      parameters:
        - $ref: '#/components/parameters/PostalCode'
        - $ref: '#/components/parameters/Latitude'
        - $ref: '#/components/parameters/Longitude'
        - $ref: '#/components/parameters/Radius'
        - $ref: '#/components/parameters/PageSize'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/property/detailowner:
    get:
      operationId: getPropertyDetailOwner
      tags: [Property]
      summary: Property detail with owner
      description: Property characteristics plus current owner names and mailing information.
      parameters:
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/AttomId'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/property/buildingpermits:
    get:
      operationId: getPropertyBuildingPermits
      tags: [Property]
      summary: Property building permits
      description: Building permit records for a property.
      parameters:
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/AttomId'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/property/detailmortgage:
    get:
      operationId: getPropertyDetailMortgage
      tags: [Mortgage]
      summary: Property detail with mortgage
      description: Property characteristics plus current mortgage and lender information.
      parameters:
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/AttomId'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/property/detailmortgageowner:
    get:
      operationId: getPropertyDetailMortgageOwner
      tags: [Mortgage]
      summary: Property detail with mortgage and owner
      description: Combined property characteristics, mortgage/lender data, and owner information in a single call.
      parameters:
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/AttomId'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/property/detailwithschools:
    get:
      operationId: getPropertyDetailWithSchools
      tags: [School]
      summary: Property detail with schools
      description: Property characteristics plus the school attendance zones and schools serving the property.
      parameters:
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/AttomId'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/assessment/detail:
    get:
      operationId: getAssessmentDetail
      tags: [Assessment]
      summary: Assessment detail
      description: County assessment data - assessed and market values, tax amounts, and exemptions - for a property.
      parameters:
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/AttomId'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/assessment/snapshot:
    get:
      operationId: getAssessmentSnapshot
      tags: [Assessment]
      summary: Assessment snapshot
      description: Assessment summary for properties in an area matching value or characteristic filters.
      parameters:
        - $ref: '#/components/parameters/PostalCode'
        - $ref: '#/components/parameters/Latitude'
        - $ref: '#/components/parameters/Longitude'
        - $ref: '#/components/parameters/Radius'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/assessmenthistory/detail:
    get:
      operationId: getAssessmentHistoryDetail
      tags: [Assessment]
      summary: Assessment history detail
      description: Historical assessment records for a property.
      parameters:
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/AttomId'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/avm/snapshot:
    get:
      operationId: getAvmSnapshot
      tags: [Valuation]
      summary: AVM snapshot
      description: Automated Valuation Model summary for properties in an area.
      parameters:
        - $ref: '#/components/parameters/PostalCode'
        - $ref: '#/components/parameters/Latitude'
        - $ref: '#/components/parameters/Longitude'
        - $ref: '#/components/parameters/Radius'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/attomavm/detail:
    get:
      operationId: getAttomAvmDetail
      tags: [Valuation]
      summary: ATTOM AVM detail
      description: Detailed AVM calculation for a property - estimated value, confidence score, and high/low value range.
      parameters:
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/AttomId'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/avmhistory/detail:
    get:
      operationId: getAvmHistoryDetail
      tags: [Valuation]
      summary: AVM history detail
      description: Historical AVM values for a property over time.
      parameters:
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/AttomId'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/valuation/rentalavm:
    get:
      operationId: getRentalAvm
      tags: [Valuation]
      summary: Rental AVM
      description: Estimated market rent (rental AVM) for a property, with a value range.
      parameters:
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/AttomId'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/valuation/homeequity:
    get:
      operationId: getHomeEquity
      tags: [Home Equity]
      summary: Home equity
      description: >-
        Estimated home equity for a property, combining the AVM value with
        outstanding mortgage balances to return an estimated equity position and
        loan-to-value indication.
      parameters:
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/AttomId'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/sale/detail:
    get:
      operationId: getSaleDetail
      tags: [Sales]
      summary: Sale detail
      description: Recorded sale transaction detail for a property.
      parameters:
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/AttomId'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/sale/snapshot:
    get:
      operationId: getSaleSnapshot
      tags: [Sales]
      summary: Sale snapshot
      description: Sale transactions for properties in an area over a date range.
      parameters:
        - $ref: '#/components/parameters/PostalCode'
        - $ref: '#/components/parameters/StartSaleSearchDate'
        - $ref: '#/components/parameters/EndSaleSearchDate'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/saleshistory/detail:
    get:
      operationId: getSalesHistoryDetail
      tags: [Sales]
      summary: Sales history detail
      description: Up to ~10 years of recorded sales history for a property.
      parameters:
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/AttomId'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/saleshistory/basichistory:
    get:
      operationId: getSalesHistoryBasic
      tags: [Sales]
      summary: Sales history (basic)
      description: Essential sales history records for a property.
      parameters:
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/AttomId'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/saleshistory/expandedhistory:
    get:
      operationId: getSalesHistoryExpanded
      tags: [Sales]
      summary: Sales history (expanded)
      description: Extended sales history records, including transaction and mortgage context, for a property.
      parameters:
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/AttomId'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/transaction/salestrend:
    get:
      operationId: getSalesTrend
      tags: [Sales]
      summary: Sales trend
      description: Aggregated average/median sale prices and transaction counts for an area over an interval (up to two years).
      parameters:
        - $ref: '#/components/parameters/GeoIdV4'
        - $ref: '#/components/parameters/Interval'
        - $ref: '#/components/parameters/StartYear'
        - $ref: '#/components/parameters/EndYear'
      responses:
        '200': { $ref: '#/components/responses/AreaResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/allevents/detail:
    get:
      operationId: getAllEventsDetail
      tags: [Events]
      summary: All events detail
      description: >-
        A consolidated view of every event on a property - assessment, AVM, sale,
        deed, and mortgage - in a single call.
      parameters:
        - $ref: '#/components/parameters/Address1'
        - $ref: '#/components/parameters/Address2'
        - $ref: '#/components/parameters/AttomId'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/allevents/snapshot:
    get:
      operationId: getAllEventsSnapshot
      tags: [Events]
      summary: All events snapshot
      description: Summary of property events for properties in an area.
      parameters:
        - $ref: '#/components/parameters/PostalCode'
        - $ref: '#/components/parameters/Latitude'
        - $ref: '#/components/parameters/Longitude'
        - $ref: '#/components/parameters/Radius'
      responses:
        '200': { $ref: '#/components/responses/PropertyResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/school/search:
    get:
      operationId: getSchoolSearch
      tags: [School]
      summary: School search
      description: Search for schools within a radius of coordinates or within a school attendance area / geoIdV4.
      parameters:
        - $ref: '#/components/parameters/GeoIdV4'
        - $ref: '#/components/parameters/Latitude'
        - $ref: '#/components/parameters/Longitude'
        - $ref: '#/components/parameters/Radius'
      responses:
        '200': { $ref: '#/components/responses/AreaResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/school/profile:
    get:
      operationId: getSchoolProfile
      tags: [School]
      summary: School profile
      description: Profile for an individual school - grades, enrollment, ratings, and location.
      parameters:
        - $ref: '#/components/parameters/GeoIdV4'
      responses:
        '200': { $ref: '#/components/responses/AreaResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /propertyapi/v1.0.0/school/district:
    get:
      operationId: getSchoolDistrict
      tags: [School]
      summary: School district
      description: Information about a school district, including boundaries and enrollment.
      parameters:
        - $ref: '#/components/parameters/GeoIdV4'
      responses:
        '200': { $ref: '#/components/responses/AreaResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /areaapi/v2.0.0/geography/lookup:
    get:
      operationId: getAreaGeographyLookup
      tags: [Area]
      summary: Area geography lookup
      description: >-
        Returns a list of areas (with geoId / geoIdV4 codes) matching an area name
        and geography type (county, place, neighborhood, school district, ZIP code
        tabulation area, and others). Modeled from ATTOM's Area API v2/v4 lookups.
      parameters:
        - name: name
          in: query
          schema: { type: string }
          description: Area name to search for.
        - name: geographyTypeAbbreviation
          in: query
          schema: { type: string }
          description: Geography type code (e.g. CO, PL, N2, DB, ZI).
      responses:
        '200': { $ref: '#/components/responses/AreaResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /areaapi/v2.0.0/hierarchy/lookup:
    get:
      operationId: getAreaHierarchyLookup
      tags: [Area]
      summary: Area hierarchy lookup
      description: Returns the hierarchy of parent/child areas for a given geoIdV4. Modeled from ATTOM's Area API.
      parameters:
        - $ref: '#/components/parameters/GeoIdV4'
      responses:
        '200': { $ref: '#/components/responses/AreaResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /areaapi/v2.0.0/boundary/detail:
    get:
      operationId: getAreaBoundaryDetail
      tags: [Area]
      summary: Area boundary detail
      description: >-
        Returns the boundary geometry for an area in GeoJSON format, for most
        geographies supported by the geocoding system. Modeled from ATTOM's
        Area API boundary endpoint.
      parameters:
        - $ref: '#/components/parameters/GeoIdV4'
        - name: format
          in: query
          schema: { type: string, enum: [geojson, wkt] }
          description: Boundary geometry format.
      responses:
        '200': { $ref: '#/components/responses/AreaResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /v4/neighborhood/community:
    get:
      operationId: getCommunity
      tags: [Community]
      summary: Community detail
      description: >-
        Community and neighborhood context for a place or geoIdV4 - climate,
        crime, demographics, natural hazards, education, and commute indicators.
      parameters:
        - $ref: '#/components/parameters/GeoIdV4'
      responses:
        '200': { $ref: '#/components/responses/AreaResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /v4/neighborhood/poi:
    get:
      operationId: getPoiSearch
      tags: [POI]
      summary: POI search
      description: >-
        Points-of-interest search returning nearby businesses and amenities within
        a radius of coordinates or an address. Modeled from ATTOM's POI API v4.
      parameters:
        - $ref: '#/components/parameters/Address'
        - $ref: '#/components/parameters/Latitude'
        - $ref: '#/components/parameters/Longitude'
        - $ref: '#/components/parameters/Radius'
        - name: categoryName
          in: query
          schema: { type: string }
          description: One or more POI category names to filter by.
        - name: recordLimit
          in: query
          schema: { type: integer, default: 20 }
          description: Maximum number of POI records to return.
      responses:
        '200': { $ref: '#/components/responses/AreaResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /v4/neighborhood/poi/category/lookup:
    get:
      operationId: getPoiCategoryLookup
      tags: [POI]
      summary: POI category lookup
      description: Returns the supported POI business categories. Modeled from ATTOM's POI API v4.
      responses:
        '200': { $ref: '#/components/responses/AreaResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
  /transportationnoise:
    get:
      operationId: getTransportationNoise
      tags: [Transportation Noise]
      summary: Transportation noise
      description: >-
        Modeled transportation-noise scores for a location, estimating noise
        exposure from road, rail, and air traffic. Modeled from ATTOM's
        transportation-noise resource; confirm the exact path and parameters
        against the live documentation.
      parameters:
        - $ref: '#/components/parameters/Address'
        - $ref: '#/components/parameters/Latitude'
        - $ref: '#/components/parameters/Longitude'
      responses:
        '200': { $ref: '#/components/responses/AreaResponse' }
        '401': { $ref: '#/components/responses/Unauthorized' }
components:
  securitySchemes:
    apiKeyAuth:
      type: apiKey
      in: header
      name: apikey
      description: >-
        Your unique ATTOM API key, assigned by ATTOM and passed in the `apikey`
        request header. Also send `Accept: application/json` (or application/xml).
  parameters:
    Address:
      name: address
      in: query
      schema: { type: string }
      description: Full one-line street address (e.g. "4529 Winona Court, Denver, CO").
    Address1:
      name: address1
      in: query
      schema: { type: string }
      description: First line of the street address (house number and street).
    Address2:
      name: address2
      in: query
      schema: { type: string }
      description: Second line of the address (city, state).
    Apn:
      name: apn
      in: query
      schema: { type: string }
      description: Assessor parcel number; use with fips.
    Fips:
      name: fips
      in: query
      schema: { type: string }
      description: County FIPS code; use with apn.
    AttomId:
      name: attomid
      in: query
      schema: { type: string }
      description: ATTOM-assigned property identifier.
    PostalCode:
      name: postalcode
      in: query
      schema: { type: string }
      description: 5-digit ZIP / postal code to scope the search.
    Latitude:
      name: latitude
      in: query
      schema: { type: number, format: double }
      description: Latitude of the search center.
    Longitude:
      name: longitude
      in: query
      schema: { type: number, format: double }
      description: Longitude of the search center.
    Radius:
      name: radius
      in: query
      schema: { type: number, format: double, default: 5, maximum: 20 }
      description: Search radius in miles (default 5, maximum 20).
    Page:
      name: page
      in: query
      schema: { type: integer, default: 1 }
      description: Page number for paginated results.
    PageSize:
      name: pagesize
      in: query
      schema: { type: integer, default: 10, maximum: 100 }
      description: Number of records per page (maximum 100).
    GeoIdV4:
      name: geoIdV4
      in: query
      schema: { type: string }
      description: 32-character geoIdV4 area identifier (required by v4-and-above endpoints).
    Interval:
      name: interval
      in: query
      schema: { type: string, enum: [monthly, quarterly, yearly] }
      description: Aggregation interval for trend data.
    StartYear:
      name: startyear
      in: query
      schema: { type: integer }
      description: First year of the trend window.
    EndYear:
      name: endyear
      in: query
      schema: { type: integer }
      description: Last year of the trend window.
    StartSaleSearchDate:
      name: startSaleSearchDate
      in: query
      schema: { type: string, format: date }
      description: Start of the sale date range (YYYY-MM-DD).
    EndSaleSearchDate:
      name: endSaleSearchDate
      in: query
      schema: { type: string, format: date }
      description: End of the sale date range (YYYY-MM-DD).
  responses:
    PropertyResponse:
      description: A status envelope plus an array of property records.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/PropertyResponse'
    AreaResponse:
      description: A status envelope plus an array of area, school, community, or POI records.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/GenericResponse'
    BadRequest:
      description: The request was missing required parameters or was malformed.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/StatusEnvelope'
    Unauthorized:
      description: Missing or invalid API key.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/StatusEnvelope'
  schemas:
    Status:
      type: object
      description: The status block returned on every ATTOM response.
      properties:
        version:
          type: string
        code:
          type: integer
        msg:
          type: string
        total:
          type: integer
        page:
          type: integer
        pagesize:
          type: integer
    StatusEnvelope:
      type: object
      properties:
        status:
          $ref: '#/components/schemas/Status'
    Property:
      type: object
      description: A property record. ATTOM returns a rich, package-dependent object; key groups are summarized here.
      properties:
        identifier:
          type: object
          properties:
            obPropId: { type: string }
            attomId: { type: integer }
            fips: { type: string }
            apn: { type: string }
        address:
          type: object
          properties:
            line1: { type: string }
            line2: { type: string }
            locality: { type: string }
            countrySubd: { type: string }
            postal1: { type: string }
        location:
          type: object
          properties:
            latitude: { type: string }
            longitude: { type: string }
            geoIdV4:
              type: object
              additionalProperties: { type: string }
        summary:
          type: object
          additionalProperties: true
        building:
          type: object
          additionalProperties: true
        assessment:
          type: object
          additionalProperties: true
        avm:
          type: object
          additionalProperties: true
        sale:
          type: object
          additionalProperties: true
        mortgage:
          type: object
          additionalProperties: true
        owner:
          type: object
          additionalProperties: true
    PropertyResponse:
      type: object
      properties:
        status:
          $ref: '#/components/schemas/Status'
        property:
          type: array
          items:
            $ref: '#/components/schemas/Property'
    GenericResponse:
      type: object
      description: Generic envelope for area, school, community, POI, and boundary responses.
      properties:
        status:
          $ref: '#/components/schemas/Status'
      additionalProperties: true