Build on Indiana's Most Complete Property Dataset
RESTful API serving 3.7M parcel records across 92 counties. Parcel geometry, assessments, sales, building details, and risk overlays.
The problem
- County assessor websites are inconsistent and lack APIs
- Scraping 92 different county data sources is a full-time job
- No single source combines geometry, assessments, sales, and building data for Indiana
- Building your own data pipeline means months of work before you can ship a product
How Developer API helps
Unified REST API
Single endpoint for all 92 counties. Parcel search, geocoding, assessment history, comparable sales, building characteristics.
GeoJSON and Vector Tiles
Full parcel boundary geometry as GeoJSON, plus pre-built vector tiles for map applications via Martin tile server.
TypeScript and Python SDKs
Strongly-typed client libraries with auto-generated types from our OpenAPI spec.
Interactive API Documentation
Swagger UI with live request testing. Try endpoints before writing a line of code.
Tiered Pricing
Free tier for prototyping. Starter, Growth, and Enterprise tiers scale with your usage.
Questions
How often is the data updated?
Parcel geometry is refreshed weekly from the Indiana Geographic Information Office. Assessment and sales data are updated as new records become available from county and state sources.
What format is the parcel geometry in?
GeoJSON (RFC 7946). Each parcel includes full boundary polygon, centroid, and bounding box. We also serve pre-built vector tiles via Martin tile server.
Is there a free tier?
Yes. The free tier includes 1,000 API calls per month, access to all endpoints, and full documentation. No credit card required.
Related products
White Label
Embeddable property search widgets, branded API access, and custom-domain deployments. Let your customers search 3.7M Indiana parcels under your brand.
AI Valuation
Automated valuation models trained exclusively on Indiana sales data. AVM estimates with confidence intervals, SHAP explainability, and assessment anomaly detection.
Property Lookup
Free access to assessed values, building details, comparable sales, and assessment history for 3.7M parcels across all 92 Indiana counties.
Ready to explore the api?
RESTful API with 3.7M Indiana parcel records, assessment data, sales history, and building characteristics. Free tier available.