Estated

Estated is a property-data company that operates a JSON REST API returning detailed U.S. residential and commercial property records — assessor data, parcel geometry, structure characteristics, taxes, assessments, market assessments, valuation (AVM), owner of record, deeds, and parcel boundaries. Lookups can be performed by split address, parsed address components, a single combined address string, or by FIPS county code + assessor parcel number (APN). The current public surface is the Property Data API v4 at `https://apis.estated.com/v4/property`, authenticated with a `token` query parameter. Estated was acquired by ATTOM Data in 2020 and its infrastructure is being migrated to ATTOM; the Estated developer documentation is scheduled to be deprecated during 2026, after which property data access will be served through ATTOM's documentation and endpoints. Existing Estated tokens continue to work through the transition and no integration changes are required during the migration window.

Estated publishes 1 API on the APIs.io network: Property API. Tagged areas include Property Data, Real-Estate, Property Records, Assessor, and Parcels.

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

Estated’s developer surface includes authentication, documentation, signup flow, GitHub presence, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub

47.2/100 developing ▬ flat Agent 31/100 agent ready saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs

Property Data Real-Estate Property RecordsAssessorParcelsAPNFIPSDeedsAVM Valuation Boundaries GISOwner Of RecordTax Assessment

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 47.2/100 · developing

Contract Quality 17.2 / 25

Developer Ergonomics 4.3 / 20

Access Clarity 14.7 / 20

Operational Transparency 0.7 / 13

Contract Governance 3.5 / 12

Discoverability 6.9 / 10

Agent readiness — 31/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 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 4 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/estated: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

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

Estated Property API

The Property API from Estated — 1 operation(s) for property.

Open Collections 3

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

API Collection

OPEN COLLECTION

Estated Data Property API

OPEN COLLECTION

Estated Property Data API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Estated Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Estated Rate Limits

0 limits

RATE LIMITS

FinOps 1

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

Estated Finops

FINOPS

Semantic Vocabularies 1

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

Estated Context

48 classes · 0 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

Estated API Rules

5 rules · 4 warnings 1 info

SPECTRAL

Estated API Rules

4 rules · 1 errors 3 warnings

SPECTRAL

JSON Schema 1

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

Estated Property

11 properties

JSON SCHEMA

Examples 1

Example request and response payloads for these APIs.

Estated Get Property Example

2 fields

EXAMPLE

Security Posture 2

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

Estated Authentication

apiKey · 1 scheme

SECURITY

Estated Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Estated Agentic Access

1 operation

1 operations · 0 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Signup

Signup

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

Schema

Schema

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHub

GitHub

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

Contact

Contact

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 4

Properties that don't map to a standard resource type

Developers

Developers

ParentCompany

ParentCompany

AcquisitionAnnouncement

AcquisitionAnnouncement

ParentCompanyProduct

ParentCompanyProduct

Source (apis.yml)

aid: estated
name: Estated
description: Estated is a property-data company that operates a JSON REST API returning detailed U.S. residential and commercial
  property records — assessor data, parcel geometry, structure characteristics, taxes, assessments, market assessments, valuation
  (AVM), owner of record, deeds, and parcel boundaries. Lookups can be performed by split address, parsed address components,
  a single combined address string, or by FIPS county code + assessor parcel number (APN). The current public surface is the
  Property Data API v4 at `https://apis.estated.com/v4/property`, authenticated with a `token` query parameter. Estated was
  acquired by ATTOM Data in 2020 and its infrastructure is being migrated to ATTOM; the Estated developer documentation is
  scheduled to be deprecated during 2026, after which property data access will be served through ATTOM's documentation and
  endpoints. Existing Estated tokens continue to work through the transition and no integration changes are required during
  the migration window.
type: API
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
position: Producing
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/estated.png
tags:
- Property Data
- Real-Estate
- Property Records
- Assessor
- Parcels
- APN
- FIPS
- Deeds
- AVM
- Valuation
- Boundaries
- GIS
- Owner Of Record
- Tax Assessment
tags_raw:
- Property Data
- Real Estate
- Property Records
- Assessor
- Parcels
- APN
- FIPS
- Deeds
- AVM
- Valuation
- Boundaries
- GIS
- Owner Of Record
- Tax Assessment
url: https://raw.githubusercontent.com/api-evangelist/estated/refs/heads/main/apis.yml
created: '2026-05-25'
modified: '2026-05-25'
specificationVersion: '0.23'
apis:
- aid: estated:estated-property-api
  name: Estated Property API
  description: The Property API from Estated — 1 operation(s) for property.
  humanURL: https://estated.com/developers/docs/v4
  baseURL: https://apis.estated.com
  tags:
  - Property
  properties:
  - type: OpenAPI
    url: openapi/estated-property-api-openapi.yml
  - type: Documentation
    url: https://estated.com/developers/docs/v4
  - type: Documentation
    url: https://estated.com/developers/docs/v4/property/overview
  - type: Documentation
    url: https://estated.com/developers/docs/v4/property/schema
  - type: Documentation
    url: https://estated.com/developers/docs/v4/property/values
  - type: Signup
    url: https://estated.com/login
  - type: JSONSchema
    url: json-schema/estated-property-schema.json
  - type: JSONLD
    url: json-ld/estated-context.jsonld
  - type: Examples
    url: examples/estated-get-property-example.json
  - type: SpectralRules
    url: rules/estated-rules.yml
  - type: Plans
    url: plans/estated-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/estated-rate-limits.yml
  - type: FinOps
    url: finops/estated-finops.yml
  - type: Vocabulary
    url: vocabulary/estated-vocabulary.yml
common:
- type: AgenticAccess
  url: agentic-access/estated-agentic-access.yml
- type: DomainSecurity
  url: security/estated-domain-security.yml
- type: Authentication
  url: authentication/estated-authentication.yml
- type: Website
  url: https://estated.com
- type: Developers
  url: https://estated.com/developers/docs/v4
- type: Documentation
  url: https://estated.com/developers/docs/v4/property/overview
- type: Schema
  url: https://estated.com/developers/docs/v4/property/schema
- type: Signup
  url: https://estated.com/login
- type: ParentCompany
  url: https://www.attomdata.com/
- type: AcquisitionAnnouncement
  url: https://www.attomdata.com/news/company-news/attom-company-announcement-10/
- type: ParentCompanyProduct
  url: https://www.attomdata.com/solutions/property-data-api/
- type: TermsOfService
  url: https://www.attomdata.com/terms-of-use/
- type: PrivacyPolicy
  url: https://www.attomdata.com/privacy/
- type: Contact
  url: https://www.attomdata.com/contact-us/
- type: GitHub
  url: https://github.com/estated
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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