ATTOM
ATTOM Data Solutions is a national property, real estate, and location data provider that curates a multi-sourced warehouse of data on 158+ million U.S. properties. The ATTOM API (also delivered as ATTOM Cloud) exposes that data over REST as a family of logical resources - property characteristics, tax assessments, automated valuations (AVM), sales and deed history, mortgage records, area and boundary geographies, schools, community and neighborhood data, points of interest, transportation noise, all-event snapshots, and home equity - queried by address, APN/FIPS, ATTOM ID, radius, or geoIdV4 and authenticated with an API key.
12 APIs
0 Features
Property DataReal EstateLocation DataValuationAVMAssessmentMortgageNeighborhood
Core property characteristics for a single property or a list of properties, queried by address, APN/FIPS, ATTOM ID, or radius. Includes the basic profile, detail, expanded prof...
County tax assessment data - assessed and market values, tax amounts, exemptions, and the assessment history for a property, via the assessment detail, assessment snapshot, and ...
Automated Valuation Model estimates for a property, including the ATTOM AVM detail, AVM snapshot, AVM history, and rental AVM packages, returning an estimated value with a confi...
Recorded sale and deed transactions plus multi-year sales history and sales trends - sale detail, sale snapshot, sales history (basic/expanded), and aggregated sales-trend count...
Property records enriched with mortgage and lender information via the detail-with-mortgage and detail-with-mortgage-and-owner packages, returning loan amounts, lenders, loan ty...
Geography services that resolve and describe ATTOM area codes - geoId/geoIdV4 lookups by name and geography type, area hierarchy lookups, location lookups, and boundary geometry...
School and school-district data - search schools near a location or attendance zone, retrieve an individual school profile with ratings and enrollment, get district details, and...
Neighborhood and community context for a place or geoIdV4 - climate, crime, demographics, natural hazards, education, commute, and quality-of-life indicators returned by the v4 ...
Points-of-interest search returning nearby businesses and amenities - grocery, dining, schools, parks, healthcare, and more - within a radius or area, plus a POI category lookup...
Modeled transportation-noise scores for a location, estimating noise exposure from road, rail, and air traffic at a set of coordinates or for a property.
A consolidated view of every event on a property - assessment, AVM, sale, deed, and mortgage - in a single call via the allevents detail and snapshot packages, ideal for buildin...
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 via the valu...
opencollection: 1.0.0
info:
name: ATTOM API
version: 1.0.0
request:
auth:
type: apikey
apikey:
key: apikey
value: '{{apiKey}}'
in: header
items:
- info:
name: Property
type: folder
items:
- info:
name: Property ID lookup
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/property/id?address1=4529 Winona Court&address2=Denver, CO
docs: Returns the ATTOM-assigned property ID and minimal identity fields for matching properties.
- info:
name: Property basic profile
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/property/basicprofile?address=4529 Winona Court, Denver, CO
docs: Essential property profile - address, location, lot, and building basics - for a specific address or APN/FIPS.
- info:
name: Property detail
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/property/detail?attomid=145423726
docs: Comprehensive property characteristics for a property or list of properties.
- info:
name: Property expanded profile
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/property/expandedprofile?address1=4529 Winona Court&address2=Denver,
CO
docs: Extended property profile combining characteristics, most-recent sale, assessment, and AVM in one call.
- info:
name: Property address radius search
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/property/address?latitude=39.780062&longitude=-105.043284&radius=1
docs: Radius search returning all properties within a given radius (miles) of coordinates.
- info:
name: Property snapshot
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/property/snapshot?postalcode=80212
docs: Returns properties in an area matching characteristic filters such as beds, baths, size, value, and lot size.
- info:
name: Property detail with owner
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/property/detailowner?attomid=145423726
docs: Property characteristics plus current owner names and mailing information.
- info:
name: Property building permits
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/property/buildingpermits?attomid=145423726
docs: Building permit records for a property.
- info:
name: Assessment
type: folder
items:
- info:
name: Assessment detail
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/assessment/detail?attomid=145423726
docs: County assessment data - assessed and market values, tax amounts, and exemptions - for a property.
- info:
name: Assessment snapshot
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/assessment/snapshot?postalcode=80212
docs: Assessment summary for properties in an area matching value or characteristic filters.
- info:
name: Assessment history detail
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/assessmenthistory/detail?attomid=145423726
docs: Historical assessment records for a property.
- info:
name: Valuation (AVM)
type: folder
items:
- info:
name: ATTOM AVM detail
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/attomavm/detail?address1=4529 Winona Court&address2=Denver,
CO
docs: Detailed AVM calculation for a property - estimated value, confidence score, and high/low value range.
- info:
name: AVM snapshot
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/avm/snapshot?postalcode=80212
docs: Automated Valuation Model summary for properties in an area.
- info:
name: AVM history detail
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/avmhistory/detail?attomid=145423726
docs: Historical AVM values for a property over time.
- info:
name: Rental AVM
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/valuation/rentalavm?attomid=145423726
docs: Estimated market rent (rental AVM) for a property, with a value range.
- info:
name: Home Equity
type: folder
items:
- info:
name: Home equity
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/valuation/homeequity?attomid=145423726
docs: Estimated home equity for a property, combining the AVM value with outstanding mortgage balances to return an equity
position and loan-to-value indication.
- info:
name: Sales & Deed
type: folder
items:
- info:
name: Sale detail
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/sale/detail?attomid=145423726
docs: Recorded sale transaction detail for a property.
- info:
name: Sale snapshot
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/sale/snapshot?postalcode=80212&startSaleSearchDate=2024-01-01&endSaleSearchDate=2024-12-31
docs: Sale transactions for properties in an area over a date range.
- info:
name: Sales history detail
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/saleshistory/detail?attomid=145423726
docs: Up to ~10 years of recorded sales history for a property.
- info:
name: Sales history (basic)
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/saleshistory/basichistory?attomid=145423726
docs: Essential sales history records for a property.
- info:
name: Sales history (expanded)
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/saleshistory/expandedhistory?attomid=145423726
docs: Extended sales history records, including transaction and mortgage context, for a property.
- info:
name: Sales trend
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/transaction/salestrend?geoIdV4={{geoIdV4}}&interval=yearly&startyear=2022&endyear=2024
docs: Aggregated average/median sale prices and transaction counts for an area over an interval (up to two years).
- info:
name: Mortgage
type: folder
items:
- info:
name: Property detail with mortgage
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/property/detailmortgage?attomid=145423726
docs: Property characteristics plus current mortgage and lender information.
- info:
name: Property detail with mortgage and owner
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/property/detailmortgageowner?attomid=145423726
docs: Combined property characteristics, mortgage/lender data, and owner information in a single call.
- info:
name: School
type: folder
items:
- info:
name: Property detail with schools
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/property/detailwithschools?attomid=145423726
docs: Property characteristics plus the school attendance zones and schools serving the property.
- info:
name: School search
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/school/search?latitude=39.780062&longitude=-105.043284&radius=5
docs: Search for schools within a radius of coordinates or within a school attendance area / geoIdV4.
- info:
name: School profile
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/school/profile?geoIdV4={{geoIdV4}}
docs: Profile for an individual school - grades, enrollment, ratings, and location.
- info:
name: School district
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/school/district?geoIdV4={{geoIdV4}}
docs: Information about a school district, including boundaries and enrollment.
- info:
name: Events
type: folder
items:
- info:
name: All events detail
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/allevents/detail?id=145423726
docs: A consolidated view of every event on a property - assessment, AVM, sale, deed, and mortgage - in a single call.
- info:
name: All events snapshot
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/propertyapi/v1.0.0/allevents/snapshot?postalcode=80212
docs: Summary of property events for properties in an area.
- info:
name: Area & Boundary
type: folder
items:
- info:
name: Area geography lookup
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/areaapi/v2.0.0/geography/lookup?name=Denver&geographyTypeAbbreviation=PL
docs: Returns areas (with geoId / geoIdV4 codes) matching an area name and geography type. Modeled from ATTOM's Area API.
- info:
name: Area hierarchy lookup
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/areaapi/v2.0.0/hierarchy/lookup?geoIdV4={{geoIdV4}}
docs: Returns the hierarchy of parent/child areas for a given geoIdV4. Modeled from ATTOM's Area API.
- info:
name: Area boundary detail
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/areaapi/v2.0.0/boundary/detail?geoIdV4={{geoIdV4}}&format=geojson
docs: Returns the boundary geometry for an area in GeoJSON format. Modeled from ATTOM's Area API boundary endpoint.
- info:
name: Community
type: folder
items:
- info:
name: Community detail
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/v4/neighborhood/community?geoIdV4={{geoIdV4}}
docs: Community and neighborhood context for a place or geoIdV4 - climate, crime, demographics, natural hazards, education,
and commute indicators.
- info:
name: POI
type: folder
items:
- info:
name: POI search
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/v4/neighborhood/poi?address=4529 Winona Court, Denver, CO&radius=5
docs: Points-of-interest search returning nearby businesses and amenities within a radius. Modeled from ATTOM's POI API
v4.
- info:
name: POI category lookup
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/v4/neighborhood/poi/category/lookup
docs: Returns the supported POI business categories. Modeled from ATTOM's POI API v4.
- info:
name: Transportation Noise
type: folder
items:
- info:
name: Transportation noise
type: http
http:
method: GET
url: https://api.gateway.attomdata.com/transportationnoise?address=4529 Winona Court, Denver, CO
docs: Modeled transportation-noise scores for a location, estimating noise exposure from road, rail, and air traffic.
Modeled from ATTOM's transportation-noise resource.
bundled: true