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ATTOM AVM API

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

ATTOM AVM API is one of 18 APIs that ATTOM publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

This API exposes 6 JSON Schema definitions.

Tagged areas include AVM. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, a JSON-LD context, and 6 JSON Schemas.

This API exposes 5 operations across 5 paths, and defines 5 schemas. It is described by OpenAPI 3.1.0, at version v1.0.0.

Requests are made against a single base URL, https://api.gateway.attomdata.com.

5 operations 5 paths 5 schemas 5 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.1.0
API Version
v1.0.0
Base URL
https://api.gateway.attomdata.com/propertyapi/v1.0.0
Authentication
API Key
Resource Areas
1

Authentication & Security 1

ATTOM AVM API declares 1 security scheme for authenticating requests. An API key is passed in the header as apikey (ApiKeyAuth). By default, every request must be authenticated.

  • ApiKeyAuth — ATTOM-issued API key. Pass on every request via the apikey header.

Paths & Operations 5

Across 5 paths, the API surfaces 5 operations — 5 GET. Each is listed below with its method, path, parameters, and response codes.

AVM 5

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

GET
/attomavm/detail
Get ATTOM AVM Detail
getAttomAvmDetail 2 params → 200
GET
/avm/snapshot
Get AVM Snapshot
getAvmSnapshot 2 params → 200
GET
/avm/detail
Get AVM Detail
getAvmDetail 2 params → 200
GET
/avmhistory/detail
Get AVM History
getAvmHistoryDetail 2 params → 200
GET
/valuation/rentalavm
Get Rental AVM
getRentalAvm 2 params → 200

Schemas 5

The contract defines 5 schemas that model the data the API accepts and returns. The most detailed are Address (10 properties), Status (6 properties), Identifier (4 properties), AVM (3 properties). Each schema is shown below with its type and property counts.

Status
object
ATTOM standard response status block.
6 properties
AvmEnvelope
object
2 properties
Address
object
10 properties
Identifier
object
4 properties
AVM
object
3 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

attomdata-avm-api-openapi.yml Raw ↑

Other APIs ATTOM publishes across the network.

ATTOM All Events API
ATTOM Assessment API
ATTOM Boundary API
ATTOM Building Permits API
ATTOM Community API
ATTOM Hierarchy API
ATTOM Home Equity API
ATTOM Location API
ATTOM Lookup API
ATTOM Parcel Tiles API
ATTOM POI Categories API
ATTOM POI Search API