specification: API Commons Vocabulary
specificationVersion: '0.1'
provider: ATTOM
providerId: attomdata
created: '2026-05-25'
modified: '2026-05-25'
description: Operational and capability vocabulary for the ATTOM property-data platform.
sources:
  - https://api.developer.attomdata.com/docs
  - https://www.attomdata.com/glossary/

domains:
  - id: property
    name: Property
    description: Core property characteristics, identifiers, and ownership.
    terms:
      - attomid
      - apn
      - fips
      - parcel
      - sfr
      - condo
      - multi-family
      - propertyType
      - propertySubType
      - landUse
      - absenteeOwner
      - corporateOwner
      - mailingAddress
  - id: assessment
    name: Assessment
    description: Tax assessment values, taxes paid, exemptions.
    terms:
      - assessedValue
      - marketValue
      - appraisedValue
      - taxAmount
      - taxYear
      - exemption
      - improvementValue
      - landValue
  - id: sale
    name: Sale
    description: Sales transactions, deed records, and pricing.
    terms:
      - saleAmount
      - saleDate
      - deedType
      - warrantyDeed
      - grantDeed
      - quitClaimDeed
      - armsLength
      - distressedSale
      - reoSale
      - pricePerSquareFoot
      - salesHistory
      - salesTrend
      - comparableSales
      - comps
  - id: avm
    name: AVM
    description: Automated Valuation Model outputs.
    terms:
      - avm
      - attomAvm
      - confidenceScore
      - fsdScore
      - valueRange
      - rentalAvm
      - homeEquity
  - id: mortgage
    name: Mortgage
    description: Mortgage and lien records.
    terms:
      - mortgageAmount
      - mortgageDate
      - mortgageLender
      - interestRate
      - loanTerm
      - trustDeed
      - firstMortgage
      - juniorMortgage
      - lienHolder
  - id: foreclosure
    name: Foreclosure
    description: Pre-foreclosure and foreclosure status.
    terms:
      - preforeclosure
      - noticeOfDefault
      - lisPendens
      - trusteeSale
      - foreclosureAuction
      - reo
  - id: permits
    name: Building Permits
    description: Building, renovation, and construction permits.
    terms:
      - buildingPermit
      - permitType
      - permitStatus
      - jobValue
      - issueDate
  - id: geography
    name: Geography
    description: Geographic identifiers and boundary metadata.
    terms:
      - geoIdV4
      - cbsa
      - county
      - state
      - neighborhood
      - zip
      - censusTract
      - schoolDistrict
      - geographyTypeAbbreviation
  - id: community
    name: Community
    description: Neighborhood community attributes.
    terms:
      - demographics
      - population
      - households
      - medianHouseholdIncome
      - ownerOccupiedPercent
      - renterOccupiedPercent
      - crimeIndex
      - violentCrimeIndex
      - propertyCrimeIndex
      - schoolRating
      - commuteTime
      - weatherProfile
  - id: poi
    name: Points of Interest
    description: Business and POI categorization.
    terms:
      - poi
      - lineOfBusiness
      - industry
      - category
      - businessName
      - distance

capabilities:
  - id: property-detail
    name: Property Detail
    description: Look up a property by AttomID or address.
  - id: assessment-history
    name: Assessment History
    description: Multi-year assessed-value and tax history.
  - id: sales-history
    name: Sales History
    description: Ten-year sales transaction history.
  - id: avm-current
    name: Current AVM
    description: ATTOM AVM point estimate with confidence band.
  - id: avm-history
    name: AVM History
    description: Historical AVM valuations across multiple as-of dates.
  - id: rental-avm
    name: Rental AVM
    description: Estimated monthly rent.
  - id: home-equity
    name: Home Equity
    description: Estimated home equity (AVM minus loans).
  - id: comparable-sales
    name: Comparable Sales
    description: Subject-property comps for valuation and underwriting.
  - id: all-events
    name: All Events
    description: Combined assessment + AVM + sales events.
  - id: pre-foreclosure
    name: Pre-Foreclosure
    description: Notice of default and lis pendens status.
  - id: building-permits
    name: Building Permits
    description: Permit records by property.
  - id: school-assignment
    name: School Assignment
    description: Assigned schools and district by property.
  - id: transportation-noise
    name: Transportation Noise
    description: Road, air, and rail noise score by property.
  - id: boundary-detail
    name: Boundary Detail
    description: GeoJSON polygons by geoIdV4.
  - id: hierarchy-lookup
    name: Hierarchy Lookup
    description: Geographic hierarchy resolution by lat/lon.
  - id: location-lookup-v4
    name: Location Lookup (v4)
    description: Resolve any geoIdV4 to its location record.
  - id: poi-search
    name: POI Search
    description: POI search by point or address.
  - id: community-profile
    name: Community Profile
    description: Neighborhood demographics, crime, weather, commute.
  - id: parcel-tiles
    name: Parcel Tiles
    description: Vector parcel tiles for web/mobile maps.