Introduction

Learn what the Indiana Property Data API provides and how to get started.

What is the Indiana Property Data API?

The Indiana Property Data API provides programmatic access to parcel-level property data for all 92 counties in the state of Indiana. The data includes:

  • Parcel geometries -- boundary polygons for 3.7 million parcels
  • Assessment values -- land, improvement, and total assessed values from the Gateway statewide dataset
  • CAMA data -- detailed property characteristics from county assessor systems (39 counties)
  • Sales history -- sale prices, dates, and parties from Indiana's Sales Disclosure Forms

Who is this for?

The API is designed for developers building real estate, fintech, insurance, and government applications that need Indiana property data. Common use cases:

  • Property valuation and comp analysis tools
  • Portfolio monitoring for lenders and investors
  • Tax assessment transparency applications
  • Insurance underwriting data enrichment
  • Government reporting and analytics

Key Features

  • REST API with JSON responses and OpenAPI specification
  • Parcel search by address, owner, county, ZIP code, or property class
  • Spatial queries -- radius and bounding box lookups
  • Vector tiles -- PMTiles for map visualization (MapLibre GL JS compatible)
  • Tiered pricing from a free tier (50 req/day) to enterprise plans
  • SDKs for TypeScript and Python

Next Steps

  1. Authentication -- learn how API keys work
  2. Quick Start -- make your first API call in 5 minutes
  3. API Reference -- explore all available endpoints