ATTOM website screenshot

ATTOM

ATTOM publishes 18 APIs on the APIs.io network, including All Events API, Assessment API, AVM API, and 15 more. Tagged areas include Real Estate, Property Data, Property Intelligence, Mortgage, and Assessment.

The ATTOM catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

ATTOM’s developer surface includes authentication, developer portal, documentation, signup flow, engineering blog, support, GitHub presence, and 27 more developer resources.

🌐 Visit website 📡 Source on GitHub
51.0/100 developing ▼ -5.6 Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemiumSelf serveFree trial⚡ Free to try
18 APIs
Real EstateProperty DataProperty IntelligenceMortgageAssessmentAVMForeclosureTransactionsOwner DataBuilding PermitsGeospatialBoundariesDemographicsNeighborhoodPOIInsuranceMortgage TechnologyPropTech

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 51.0/100 · developing
Contract Quality 18.6 / 25
Developer Ergonomics 10.9 / 20
Commercial Clarity 10.5 / 20
Operational Transparency 0.7 / 13
Governance 8.3 / 12
Discoverability 6.5 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/attomdata: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 18

Individual APIs this provider publishes, each with its own machine-readable definition.

ATTOM All Events API

Combined assessment, AVM, and sales-transaction events.

ATTOM Assessment API

Assessed value, tax liability, and assessment history.

ATTOM AVM API

Automated Valuation Model — current AVM, AVM history, and rental AVM.

ATTOM Boundary API

GeoJSON boundary polygons by geography identifier.

ATTOM Building Permits API

Building permit records associated with a property.

ATTOM Community API

Neighborhood community profile (demographics, crime, weather, commute).

ATTOM Hierarchy API

Geographic hierarchy lookup from coordinates.

ATTOM Home Equity API

Estimated home equity calculations.

ATTOM Location API

Resolve a location by geoIdV4.

ATTOM Lookup API

Lookup of state, county, CBSA, and geoID metadata.

ATTOM Parcel Tiles API

Vector parcel boundary tiles.

ATTOM POI Categories API

Lookup of POI categories, lines of business, and industries.

ATTOM POI Search API

Search points of interest by point or address.

ATTOM Pre-Foreclosure API

Pre-foreclosure status and notice records.

ATTOM Property API

Property characteristics, ownership, mortgage, and address resolution.

ATTOM Sale API

Sales transactions, sales history, and comparable sales.

ATTOM Sales Trends API

Aggregated sales trends for a geography.

ATTOM School API

School assignments and attendance-zone associations.

Scroll for all 18

Open Collections 5

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

ATTOM Area API

OPEN COLLECTION

ATTOM Community API

OPEN COLLECTION

ATTOM Parcel Tiles API

OPEN COLLECTION

ATTOM POI API

OPEN COLLECTION

ATTOM Property API

OPEN COLLECTION

GraphQL 1

GraphQL schemas published by this provider.

ATTOM Data GraphQL Schema

Conceptual GraphQL schema for the ATTOM Property Intelligence API suite, covering

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Attomdata Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Attomdata Rate Limits

0 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Attomdata Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Attomdata Context

0 classes · 10 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

ATTOM API Rules

5 rules · 3 warnings 2 info

SPECTRAL

ATTOM API Rules

10 rules · 6 errors 3 warnings 1 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

ATTOM Area

8 properties

JSON SCHEMA

ATTOM Assessment

5 properties

JSON SCHEMA

ATTOM AVM

3 properties

JSON SCHEMA

ATTOM Community

6 properties

JSON SCHEMA

ATTOM Property

8 properties

JSON SCHEMA

ATTOM Sale

5 properties

JSON SCHEMA

Examples 4

Example request and response payloads for these APIs.

Attom Area Hierarchy Example

3 fields

EXAMPLE

Attom Community Neighborhood Example

3 fields

EXAMPLE

Attom Poi Search Example

3 fields

EXAMPLE

Attom Property Detail Example

3 fields

EXAMPLE

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Attomdata Authentication

apiKey · 1 scheme

SECURITY

Attomdata Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Attomdata Agentic Access

47 operations

47 operations · 0 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

Portal
Portal
 DeveloperPortal
DeveloperPortal
 Signup
Signup
 Login
Login

Documentation 9

Reference material describing how the API behaves

Documentation
Documentation
 Documentation
Documentation
 Documentation
Documentation
 Documentation
Documentation
 Documentation
Documentation
 Documentation
Documentation
 Documentation
Documentation
 Documentation
Documentation
 Documentation
Documentation

Scroll for all 9

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Vocabulary
Vocabulary
 SpectralRules
SpectralRules

Build 6

SDKs, sample code, and the tooling you integrate with

GitHub
GitHub
 Postman
Postman
 SDKs
SDKs
 SDKs
SDKs
 SDKs
SDKs
 SDKs
SDKs

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 4

Status, limits, changes, and where to get help

Support
Support
 ContactEmail
ContactEmail
 ContactPhone
ContactPhone
 RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 4

The organization behind the API

Blog
Blog
 LinkedIn
LinkedIn
 Twitter
Twitter
 Facebook
Facebook

Source (apis.yml)

apis.yml Raw ↑ 
aid: attomdata
url: https://raw.githubusercontent.com/api-evangelist/attomdata/refs/heads/main/apis.yml
apis:
- aid: attomdata:attomdata-all-events-api
  name: ATTOM All Events API
  description: Combined assessment, AVM, and sales-transaction events.
  humanURL: https://api.developer.attomdata.com/docs
  baseURL: https://api.gateway.attomdata.com/propertyapi/v1.0.0
  tags:
  - All Events
  properties:
  - type: OpenAPI
    url: openapi/attomdata-all-events-api-openapi.yml
  - type: Documentation
    url: https://api.developer.attomdata.com/docs
  - type: Postman
    url: https://github.com/AttomDataSolutions/postman-collections
  - type: JSONSchema
    url: json-schema/attom-property-schema.json
  - type: JSONSchema
    url: json-schema/attom-assessment-schema.json
  - type: JSONSchema
    url: json-schema/attom-sale-schema.json
  - type: JSONSchema
    url: json-schema/attom-avm-schema.json
  - type: JSONLD
    url: json-ld/attomdata-context.jsonld
  - type: Examples
    url: examples/attom-property-detail-example.json
  - type: GraphQL
    url: graphql/attomdata-graphql.md
  - type: JSONSchema
    url: json-schema/attom-area-schema.json
  - type: Examples
    url: examples/attom-area-hierarchy-example.json
  - type: Examples
    url: examples/attom-poi-search-example.json
  - type: JSONSchema
    url: json-schema/attom-community-schema.json
  - type: Examples
    url: examples/attom-community-neighborhood-example.json
- aid: attomdata:attomdata-assessment-api
  name: ATTOM Assessment API
  description: Assessed value, tax liability, and assessment history.
  humanURL: https://api.developer.attomdata.com/docs
  baseURL: https://api.gateway.attomdata.com/propertyapi/v1.0.0
  tags:
  - Assessment
  properties:
  - type: OpenAPI
    url: openapi/attomdata-assessment-api-openapi.yml
  - type: Documentation
    url: https://api.developer.attomdata.com/docs
  - type: Postman
    url: https://github.com/AttomDataSolutions/postman-collections
  - type: JSONSchema
    url: json-schema/attom-property-schema.json
  - type: JSONSchema
    url: json-schema/attom-assessment-schema.json
  - type: JSONSchema
    url: json-schema/attom-sale-schema.json
  - type: JSONSchema
    url: json-schema/attom-avm-schema.json
  - type: JSONLD
    url: json-ld/attomdata-context.jsonld
  - type: Examples
    url: examples/attom-property-detail-example.json
  - type: GraphQL
    url: graphql/attomdata-graphql.md
  - type: JSONSchema
    url: json-schema/attom-area-schema.json
  - type: Examples
    url: examples/attom-area-hierarchy-example.json
  - type: Examples
    url: examples/attom-poi-search-example.json
  - type: JSONSchema
    url: json-schema/attom-community-schema.json
  - type: Examples
    url: examples/attom-community-neighborhood-example.json
- aid: attomdata:attomdata-avm-api
  name: ATTOM AVM API
  description: Automated Valuation Model — current AVM, AVM history, and rental AVM.
  humanURL: https://api.developer.attomdata.com/docs
  baseURL: https://api.gateway.attomdata.com/propertyapi/v1.0.0
  tags:
  - AVM
  properties:
  - type: OpenAPI
    url: openapi/attomdata-avm-api-openapi.yml
  - type: Documentation
    url: https://api.developer.attomdata.com/docs
  - type: Postman
    url: https://github.com/AttomDataSolutions/postman-collections
  - type: JSONSchema
    url: json-schema/attom-property-schema.json
  - type: JSONSchema
    url: json-schema/attom-assessment-schema.json
  - type: JSONSchema
    url: json-schema/attom-sale-schema.json
  - type: JSONSchema
    url: json-schema/attom-avm-schema.json
  - type: JSONLD
    url: json-ld/attomdata-context.jsonld
  - type: Examples
    url: examples/attom-property-detail-example.json
  - type: GraphQL
    url: graphql/attomdata-graphql.md
  - type: JSONSchema
    url: json-schema/attom-area-schema.json
  - type: Examples
    url: examples/attom-area-hierarchy-example.json
  - type: Examples
    url: examples/attom-poi-search-example.json
  - type: JSONSchema
    url: json-schema/attom-community-schema.json
  - type: Examples
    url: examples/attom-community-neighborhood-example.json
- aid: attomdata:attomdata-boundary-api
  name: ATTOM Boundary API
  description: GeoJSON boundary polygons by geography identifier.
  humanURL: https://api.developer.attomdata.com/docs
  baseURL: https://api.gateway.attomdata.com/propertyapi/v1.0.0
  tags:
  - Boundary
  properties:
  - type: OpenAPI
    url: openapi/attomdata-boundary-api-openapi.yml
  - type: Documentation
    url: https://api.developer.attomdata.com/docs
  - type: Postman
    url: https://github.com/AttomDataSolutions/postman-collections
  - type: JSONSchema
    url: json-schema/attom-property-schema.json
  - type: JSONSchema
    url: json-schema/attom-assessment-schema.json
  - type: JSONSchema
    url: json-schema/attom-sale-schema.json
  - type: JSONSchema
    url: json-schema/attom-avm-schema.json
  - type: JSONLD
    url: json-ld/attomdata-context.jsonld
  - type: Examples
    url: examples/attom-property-detail-example.json
  - type: GraphQL
    url: graphql/attomdata-graphql.md
  - type: JSONSchema
    url: json-schema/attom-area-schema.json
  - type: Examples
    url: examples/attom-area-hierarchy-example.json
  - type: Examples
    url: examples/attom-poi-search-example.json
  - type: JSONSchema
    url: json-schema/attom-community-schema.json
  - type: Examples
    url: examples/attom-community-neighborhood-example.json
- aid: attomdata:attomdata-building-permits-api
  name: ATTOM Building Permits API
  description: Building permit records associated with a property.
  humanURL: https://api.developer.attomdata.com/docs
  baseURL: https://api.gateway.attomdata.com/propertyapi/v1.0.0
  tags:
  - Building Permits
  properties:
  - type: OpenAPI
    url: openapi/attomdata-building-permits-api-openapi.yml
  - type: Documentation
    url: https://api.developer.attomdata.com/docs
  - type: Postman
    url: https://github.com/AttomDataSolutions/postman-collections
  - type: JSONSchema
    url: json-schema/attom-property-schema.json
  - type: JSONSchema
    url: json-schema/attom-assessment-schema.json
  - type: JSONSchema
    url: json-schema/attom-sale-schema.json
  - type: JSONSchema
    url: json-schema/attom-avm-schema.json
  - type: JSONLD
    url: json-ld/attomdata-context.jsonld
  - type: Examples
    url: examples/attom-property-detail-example.json
  - type: GraphQL
    url: graphql/attomdata-graphql.md
  - type: JSONSchema
    url: json-schema/attom-area-schema.json
  - type: Examples
    url: examples/attom-area-hierarchy-example.json
  - type: Examples
    url: examples/attom-poi-search-example.json
  - type: JSONSchema
    url: json-schema/attom-community-schema.json
  - type: Examples
    url: examples/attom-community-neighborhood-example.json
- aid: attomdata:attomdata-community-api
  name: ATTOM Community API
  description: Neighborhood community profile (demographics, crime, weather, commute).
  humanURL: https://api.developer.attomdata.com/docs
  baseURL: https://api.gateway.attomdata.com/propertyapi/v1.0.0
  tags:
  - Community
  properties:
  - type: OpenAPI
    url: openapi/attomdata-community-api-openapi.yml
  - type: Documentation
    url: https://api.developer.attomdata.com/docs
  - type: Postman
    url: https://github.com/AttomDataSolutions/postman-collections
  - type: JSONSchema
    url: json-schema/attom-property-schema.json
  - type: JSONSchema
    url: json-schema/attom-assessment-schema.json
  - type: JSONSchema
    url: json-schema/attom-sale-schema.json
  - type: JSONSchema
    url: json-schema/attom-avm-schema.json
  - type: JSONLD
    url: json-ld/attomdata-context.jsonld
  - type: Examples
    url: examples/attom-property-detail-example.json
  - type: GraphQL
    url: graphql/attomdata-graphql.md
  - type: JSONSchema
    url: json-schema/attom-area-schema.json
  - type: Examples
    url: examples/attom-area-hierarchy-example.json
  - type: Examples
    url: examples/attom-poi-search-example.json
  - type: JSONSchema
    url: json-schema/attom-community-schema.json
  - type: Examples
    url: examples/attom-community-neighborhood-example.json
- aid: attomdata:attomdata-hierarchy-api
  name: ATTOM Hierarchy API
  description: Geographic hierarchy lookup from coordinates.
  humanURL: https://api.developer.attomdata.com/docs
  baseURL: https://api.gateway.attomdata.com/propertyapi/v1.0.0
  tags:
  - Hierarchy
  properties:
  - type: OpenAPI
    url: openapi/attomdata-hierarchy-api-openapi.yml
  - type: Documentation
    url: https://api.developer.attomdata.com/docs
  - type: Postman
    url: https://github.com/AttomDataSolutions/postman-collections
  - type: JSONSchema
    url: json-schema/attom-property-schema.json
  - type: JSONSchema
    url: json-schema/attom-assessment-schema.json
  - type: JSONSchema
    url: json-schema/attom-sale-schema.json
  - type: JSONSchema
    url: json-schema/attom-avm-schema.json
  - type: JSONLD
    url: json-ld/attomdata-context.jsonld
  - type: Examples
    url: examples/attom-property-detail-example.json
  - type: GraphQL
    url: graphql/attomdata-graphql.md
  - type: JSONSchema
    url: json-schema/attom-area-schema.json
  - type: Examples
    url: examples/attom-area-hierarchy-example.json
  - type: Examples
    url: examples/attom-poi-search-example.json
  - type: JSONSchema
    url: json-schema/attom-community-schema.json
  - type: Examples
    url: examples/attom-community-neighborhood-example.json
- aid: attomdata:attomdata-home-equity-api
  name: ATTOM Home Equity API
  description: Estimated home equity calculations.
  humanURL: https://api.developer.attomdata.com/docs
  baseURL: https://api.gateway.attomdata.com/propertyapi/v1.0.0
  tags:
  - Home Equity
  properties:
  - type: OpenAPI
    url: openapi/attomdata-home-equity-api-openapi.yml
  - type: Documentation
    url: https://api.developer.attomdata.com/docs
  - type: Postman
    url: https://github.com/AttomDataSolutions/postman-collections
  - type: JSONSchema
    url: json-schema/attom-property-schema.json
  - type: JSONSchema
    url: json-schema/attom-assessment-schema.json
  - type: JSONSchema
    url: json-schema/attom-sale-schema.json
  - type: JSONSchema
    url: json-schema/attom-avm-schema.json
  - type: JSONLD
    url: json-ld/attomdata-context.jsonld
  - type: Examples
    url: examples/attom-property-detail-example.json
  - type: GraphQL
    url: graphql/attomdata-graphql.md
  - type: JSONSchema
    url: json-schema/attom-area-schema.json
  - type: Examples
    url: examples/attom-area-hierarchy-example.json
  - type: Examples
    url: examples/attom-poi-search-example.json
  - type: JSONSchema
    url: json-schema/attom-community-schema.json
  - type: Examples
    url: examples/attom-community-neighborhood-example.json
- aid: attomdata:attomdata-location-api
  name: ATTOM Location API
  description: Resolve a location by geoIdV4.
  humanURL: https://api.developer.attomdata.com/docs
  baseURL: https://api.gateway.attomdata.com/propertyapi/v1.0.0
  tags:
  - Location
  properties:
  - type: OpenAPI
    url: openapi/attomdata-location-api-openapi.yml
  - type: Documentation
    url: https://api.developer.attomdata.com/docs
  - type: Postman
    url: https://github.com/AttomDataSolutions/postman-collections
  - type: JSONSchema
    url: json-schema/attom-property-schema.json
  - type: JSONSchema
    url: json-schema/attom-assessment-schema.json
  - type: JSONSchema
    url: json-schema/attom-sale-schema.json
  - type: JSONSchema
    url: json-schema/attom-avm-schema.json
  - type: JSONLD
    url: json-ld/attomdata-context.jsonld
  - type: Examples
    url: examples/attom-property-detail-example.json
  - type: GraphQL
    url: graphql/attomdata-graphql.md
  - type: JSONSchema
    url: json-schema/attom-area-schema.json
  - type: Examples
    url: examples/attom-area-hierarchy-example.json
  - type: Examples
    url: examples/attom-poi-search-example.json
  - type: JSONSchema
    url: json-schema/attom-community-schema.json
  - type: Examples
    url: examples/attom-community-neighborhood-example.json
- aid: attomdata:attomdata-lookup-api
  name: ATTOM Lookup API
  description: Lookup of state, county, CBSA, and geoID metadata.
  humanURL: https://api.developer.attomdata.com/docs
  baseURL: https://api.gateway.attomdata.com/propertyapi/v1.0.0
  tags:
  - Lookup
  properties:
  - type: OpenAPI
    url: openapi/attomdata-lookup-api-openapi.yml
  - type: Documentation
    url: https://api.developer.attomdata.com/docs
  - type: Postman
    url: https://github.com/AttomDataSolutions/postman-collections
  - type: JSONSchema
    url: json-schema/attom-property-schema.json
  - type: JSONSchema
    url: json-schema/attom-assessment-schema.json
  - type: JSONSchema
    url: json-schema/attom-sale-schema.json
  - type: JSONSchema
    url: json-schema/attom-avm-schema.json
  - type: JSONLD
    url: json-ld/attomdata-context.jsonld
  - type: Examples
    url: examples/attom-property-detail-example.json
  - type: GraphQL
    url: graphql/attomdata-graphql.md
  - type: JSONSchema
    url: json-schema/attom-area-schema.json
  - type: Examples
    url: examples/attom-area-hierarchy-example.json
  - type: Examples
    url: examples/attom-poi-search-example.json
  - type: JSONSchema
    url: json-schema/attom-community-schema.json
  - type: Examples
    url: examples/attom-community-neighborhood-example.json
- aid: attomdata:attomdata-parcel-tiles-api
  name: ATTOM Parcel Tiles API
  description: Vector parcel boundary tiles.
  humanURL: https://api.developer.attomdata.com/docs
  baseURL: https://api.gateway.attomdata.com/propertyapi/v1.0.0
  tags:
  - Parcel Tiles
  properties:
  - type: OpenAPI
    url: openapi/attomdata-parcel-tiles-api-openapi.yml
  - type: Documentation
    url: https://api.developer.attomdata.com/docs
  - type: Postman
    url: https://github.com/AttomDataSolutions/postman-collections
  - type: JSONSchema
    url: json-schema/attom-property-schema.json
  - type: JSONSchema
    url: json-schema/attom-assessment-schema.json
  - type: JSONSchema
    url: json-schema/attom-sale-schema.json
  - type: JSONSchema
    url: json-schema/attom-avm-schema.json
  - type: JSONLD
    url: json-ld/attomdata-context.jsonld
  - type: Examples
    url: examples/attom-property-detail-example.json
  - type: GraphQL
    url: graphql/attomdata-graphql.md
  - type: JSONSchema
    url: json-schema/attom-area-schema.json
  - type: Examples
    url: examples/attom-area-hierarchy-example.json
  - type: Examples
    url: examples/attom-poi-search-example.json
  - type: JSONSchema
    url: json-schema/attom-community-schema.json
  - type: Examples
    url: examples/attom-community-neighborhood-example.json
- aid: attomdata:attomdata-poi-categories-api
  name: ATTOM POI Categories API
  description: Lookup of POI categories, lines of business, and industries.
  humanURL: https://api.developer.attomdata.com/docs
  baseURL: https://api.gateway.attomdata.com/propertyapi/v1.0.0
  tags:
  - POI Categories
  properties:
  - type: OpenAPI
    url: openapi/attomdata-poi-categories-api-openapi.yml
  - type: Documentation
    url: https://api.developer.attomdata.com/docs
  - type: Postman
    url: https://github.com/AttomDataSolutions/postman-collections
  - type: JSONSchema
    url: json-schema/attom-property-schema.json
  - type: JSONSchema
    url: json-schema/attom-assessment-schema.json
  - type: JSONSchema
    url: json-schema/attom-sale-schema.json
  - type: JSONSchema
    url: json-schema/attom-avm-schema.json
  - type: JSONLD
    url: json-ld/attomdata-context.jsonld
  - type: Examples
    url: examples/attom-property-detail-example.json
  - type: GraphQL
    url: graphql/attomdata-graphql.md
  - type: JSONSchema
    url: json-schema/attom-area-schema.json
  - type: Examples
    url: examples/attom-area-hierarchy-example.json
  - type: Examples
    url: examples/attom-poi-search-example.json
  - type: JSONSchema
    url: json-schema/attom-community-schema.json
  - type: Examples
    url: examples/attom-community-neighborhood-example.json
- aid: attomdata:attomdata-poi-search-api
  name: ATTOM POI Search API
  description: Search points of interest by point or address.
  humanURL: https://api.developer.attomdata.com/docs
  baseURL: https://api.gateway.attomdata.com/propertyapi/v1.0.0
  tags:
  - POI Search
  properties:
  - type: OpenAPI
    url: openapi/attomdata-poi-search-api-openapi.yml
  - type: Documentation
    url: https://api.developer.attomdata.com/docs
  - type: Postman
    url: https://github.com/AttomDataSolutions/postman-collections
  - type: JSONSchema
    url: json-schema/attom-property-schema.json
  - type: JSONSchema
    url: json-schema/attom-assessment-schema.json
  - type: JSONSchema
    url: json-schema/attom-sale-schema.json
  - type: JSONSchema
    url: json-schema/attom-avm-schema.json
  - type: JSONLD
    url: json-ld/attomdata-context.jsonld
  - type: Examples
    url: examples/attom-property-detail-example.json
  - type: GraphQL
    url: graphql/attomdata-graphql.md
  - type: JSONSchema
    url: json-schema/attom-area-schema.json
  - type: Examples
    url: examples/attom-area-hierarchy-example.json
  - type: Examples
    url: examples/attom-poi-search-example.json
  - type: JSONSchema
    url: json-schema/attom-community-schema.json
  - type: Examples
    url: examples/attom-community-neighborhood-example.json
- aid: attomdata:attomdata-pre-foreclosure-api
  name: ATTOM Pre-Foreclosure API
  description: Pre-foreclosure status and notice records.
  humanURL: https://api.developer.attomdata.com/docs
  baseURL: https://api.gateway.attomdata.com/propertyapi/v1.0.0
  tags:
  - Pre-Foreclosure
  properties:
  - type: OpenAPI
    url: openapi/attomdata-pre-foreclosure-api-openapi.yml
  - type: Documentation
    url: https://api.developer.attomdata.com/docs
  - type: Postman
    url: https://github.com/AttomDataSolutions/postman-collections
  - type: JSONSchema
    url: json-schema/attom-property-schema.json
  - type: JSONSchema
    url: json-schema/attom-assessment-schema.json
  - type: JSONSchema
    url: json-schema/attom-sale-schema.json
  - type: JSONSchema
    url: json-schema/attom-avm-schema.json
  - type: JSONLD
    url: json-ld/attomdata-context.jsonld
  - type: Examples
    url: examples/attom-property-detail-example.json
  - type: GraphQL
    url: graphql/attomdata-graphql.md
  - type: JSONSchema
    url: json-schema/attom-area-schema.json
  - type: Examples
    url: examples/attom-area-hierarchy-example.json
  - type: Examples
    url: examples/attom-poi-search-example.json
  - type: JSONSchema
    url: json-schema/attom-community-schema.json
  - type: Examples
    url: examples/attom-community-neighborhood-example.json
- aid: attomdata:attomdata-property-api
  name: ATTOM Property API
  description: Property characteristics, ownership, mortgage, and address resolution.
  humanURL: https://api.developer.attomdata.com/docs
  baseURL: https://api.gateway.attomdata.com/propertyapi/v1.0.0
  tags:
  - Property
  properties:
  - type: OpenAPI
    url: openapi/attomdata-property-api-openapi.yml
  - type: Documentation
    url: https://api.developer.attomdata.com/docs
  - type: Postman
    url: https://github.com/AttomDataSolutions/postman-collections
  - type: JSONSchema
    url: json-schema/attom-property-schema.json
  - type: JSONSchema
    url: json-schema/attom-assessment-schema.json
  - type: JSONSchema
    url: json-schema/attom-sale-schema.json
  - type: JSONSchema
    url: json-schema/attom-avm-schema.json
  - type: JSONLD
    url: json-ld/attomdata-context.jsonld
  - type: Examples
    url: examples/attom-property-detail-example.json
  - type: GraphQL
    url: graphql/attomdata-graphql.md
  - type: JSONSchema
    url: json-schema/attom-area-schema.json
  - type: Examples
    url: examples/attom-area-hierarchy-example.json
  - type: Examples
    url: examples/attom-poi-search-example.json
  - type: JSONSchema
    url: json-schema/attom-community-schema.json
  - type: Examples
    url: examples/attom-community-neighborhood-example.json
- aid: attomdata:attomdata-sale-api
  name: ATTOM Sale API
  description: Sales transactions, sales history, and comparable sales.
  humanURL: https://api.developer.attomdata.com/docs
  baseURL: https://api.gateway.attomdata.com/propertyapi/v1.0.0
  tags:
  - Sale
  properties:
  - type: OpenAPI
    url: openapi/attomdata-sale-api-openapi.yml
  - type: Documentation
    url: https://api.developer.attomdata.com/docs
  - type: Postman
    url: https://github.com/AttomDataSolutions/postman-collections
  - type: JSONSchema
    url: json-schema/attom-property-schema.json
  - type: JSONSchema
    url: json-schema/attom-assessment-schema.json
  - type: JSONSchema
    url: json-schema/attom-sale-schema.json
  - type: JSONSchema
    url: json-schema/attom-avm-schema.json
  - type: JSONLD
    url: json-ld/attomdata-context.jsonld
  - type: Examples
    url: examples/attom-property-detail-example.json
  - type: GraphQL
    url: graphql/attomdata-graphql.md
  - type: JSONSchema
    url: json-schema/attom-area-schema.json
  - type: Examples
    url: examples/attom-area-hierarchy-example.json
  - type: Examples
    url: examples/attom-poi-search-example.json
  - type: JSONSchema
    url: json-schema/attom-community-schema.json
  - type: Examples
    url: examples/attom-community-neighborhood-example.json
- aid: attomdata:attomdata-sales-trends-api
  name: ATTOM Sales Trends API
  description: Aggregated sales trends for a geography.
  humanURL: https://api.developer.attomdata.com/docs
  baseURL: https://api.gateway.attomdata.com/propertyapi/v1.0.0
  tags:
  - Sales Trends
  properties:
  - type: OpenAPI
    url: openapi/attomdata-sales-trends-api-openapi.yml
  - type: Documentation
    url: https://api.developer.attomdata.com/docs
  - type: Postman
    url: https://github.com/AttomDataSolutions/postman-collections
  - type: JSONSchema
    url: json-schema/attom-property-schema.json
  - type: JSONSchema
    url: json-schema/attom-assessment-schema.json
  - type: JSONSchema
    url: json-schema/attom-sale-schema.json
  - type: JSONSchema
    url: json-schema/attom-avm-schema.json
  - type: JSONLD
    url: json-ld/attomdata-context.jsonld
  - type: Examples
    url: examples/attom-property-detail-example.json
  - type: GraphQL
    url: graphql/attomdata-graphql.md
  - type: JSONSchema
    url: json-schema/attom-area-schema.json
  - type: Examples
    url: examples/attom-area-hierarchy-example.json
  - type: Examples
    url: examples/attom-poi-search-example.json
  - type: JSONSchema
    url: json-schema/attom-community-schema.json
  - type: Examples
    url: examples/attom-community-neighborhood-example.json
- aid: attomdata:attomdata-school-api
  name: ATTOM School API
  description: School assignments and attendance-zone associations.
  humanURL: https://api.developer.attomdata.com/docs
  baseURL: https://api.gateway.attomdata.com/propertyapi/v1.0.0
  tags:
  - School
  properties:
  - type: OpenAPI
    url: openapi/attomdata-school-api-openapi.yml
  - type: Documentation
    url: https://api.developer.attomdata.com/docs
  - type: Postman
    url: https://github.com/AttomDataSolutions/postman-collections
  - type: JSONSchema
    url: json-schema/attom-property-schema.json
  - type: JSONSchema
    url: json-schema/attom-assessment-schema.json
  - type: JSONSchema
    url: json-schema/attom-sale-schema.json
  - type: JSONSchema
    url: json-schema/attom-avm-schema.json
  - type: JSONLD
    url: json-ld/attomdata-context.jsonld
  - type: Examples
    url: examples/attom-property-detail-example.json
  - type: GraphQL
    url: graphql/attomdata-graphql.md
  - type: JSONSchema
    url: json-schema/attom-area-schema.json
  - type: Examples
    url: examples/attom-area-hierarchy-example.json
  - type: Examples
    url: examples/attom-poi-search-example.json
  - type: JSONSchema
    url: json-schema/attom-community-schema.json
  - type: Examples
    url: examples/attom-community-neighborhood-example.json
name: ATTOM
tags:
- Real Estate
- Property Data
- Property Intelligence
- Mortgage
- Assessment
- AVM
- Foreclosure
- Transactions
- Owner Data
- Building Permits
- Geospatial
- Boundaries
- Demographics
- Neighborhood
- POI
- Insurance
- Mortgage Technology
- PropTech
kind: contract
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: true
  try_now: true
  public: false
  label: Freemium (free trial) · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/attomdata.png
access: 3rd-Party
common:
- type: AgenticAccess
  url: agentic-access/attomdata-agentic-access.yml
- type: DomainSecurity
  url: security/attomdata-domain-security.yml
- type: Authentication
  url: authentication/attomdata-authentication.yml
- url: https://www.attomdata.com/
  name: ATTOM Home
  type: Portal
- url: https://api.developer.attomdata.com/
  name: ATTOM Developer Platform
  type: DeveloperPortal
- url: https://api.developer.attomdata.com/docs
  name: ATTOM API Documentation
  type: Documentation
- url: https://api.developer.attomdata.com/docs/guides
  name: ATTOM Developer Guides
  type: Documentation
- url: https://api.developer.attomdata.com/signup
  name: Sign Up — Free 30-Day Trial
  type: Signup
- url: https://api.developer.attomdata.com/login
  name: Developer Login
  type: Login
- url: https://www.attomdata.com/solutions/property-data-api/
  name: Property Data API
  type: Documentation
- url: https://www.attomdata.com/solutions/bulk-data-licensing/
  name: Bulk Data Licensing
  type: Documentation
- url: https://www.attomdata.com/solutions/cloud-delivery/
  name: Cloud Data Delivery (Snowflake, Databricks, MCP)
  type: Documentation
- url: https://www.attomdata.com/data/
  name: All Data Categories
  type: Documentation
- url: https://www.attomdata.com/news/most-recent/
  name: ATTOM Insights (Blog)
  type: Blog
- url: https://www.attomdata.com/insights/white-papers/
  name: White Papers
  type: Documentation
- url: https://www.attomdata.com/webinars/
  name: Webinars
  type: Documentation
- url: https://www.attomdata.com/glossary/
  name: Glossary
  type: Documentation
- url: https://www.attomdata.com/contact-us/
  name: Contact ATTOM
  type: Support
- url: https://www.linkedin.com/company/attomdata
  name: LinkedIn
  type: LinkedIn
- url: https://twitter.com/attomdata
  name: X / Twitter
  type: Twitter
- url: https://www.facebook.com/attomdata
  name: Facebook
  type: Facebook
- url: https://github.com/AttomDataSolutions
  name: ATTOM GitHub Org
  type: GitHub
- url: https://github.com/AttomDataSolutions/postman-collections
  name: Postman Collections — Property and Area APIs
  type: Postman
- url: https://github.com/AttomDataSolutions/Sample_Code
  name: Sample Code Repository (PHP)
  type: SDKs
- url: https://github.com/AttomDataSolutions/School_Sample_Code
  name: School Sample Code (PHP)
  type: SDKs
- url: https://github.com/AttomDataSolutions/POI_Sample_Code
  name: POI Sample Code (PHP)
  type: SDKs
- url: https://github.com/AttomDataSolutions/Community_Sample_Code
  name: Community Sample Code (PHP)
  type: SDKs
- type: ContactEmail
  url: mailto:datacustomercare@attomdata.com
- type: ContactPhone
  url: tel:+18004625125
- type: Plans
  url: plans/attomdata-plans-pricing.yml
- type: RateLimits
  url: rate-limits/attomdata-rate-limits.yml
- type: FinOps
  url: finops/attomdata-finops.yml
- type: Vocabulary
  url: vocabulary/attomdata-vocabulary.yml
- type: SpectralRules
  url: rules/attomdata-rules.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
  url: https://apievangelist.com
created: '2026-05-25'
modified: '2026-05-25'
specificationVersion: '0.16'