Developer Access

Build With Landexar.

Add source-backed property and development intelligence to applications, internal systems, and customer experiences.

property-intelligence.js
// Fetch property intelligence for an address
const response = await fetch(
'https://api.landexa.com/v1/properties/1247-Meridian-Ave-Austin-TX',
{
headers: {
'Authorization': 'Bearer YOUR_API_KEY',
'Accept': 'application/json',
},
}
);
 
const property = await response.json();
 
// Response includes verified, source-attributed records
console.log(property);
// {
// parcel_id: "1247-MER-78701",
// owner: "Meridian Holdings LLC",
// assessed_value: 2140000,
// zoning_code: "MU-6",
// lot_size_sqft: 18295,
// source: "Travis County Appraisal District",
// source_url: "https://traviscad.org/...",
// confidence: "high",
// last_verified: "2026-08-01",
// developments_nearby: [
// {
// project_id: "ATX-2026-04821",
// name: "Meridian Transit Hub Expansion",
// status: "approved",
// distance_mi: 0.3,
// source: "City of Austin Planning Dept.",
// confidence: "high"
// }
// ]
// }

REST

JSON API

OAuth 2.0

Authentication

Real-time

Change events

3,100+

Counties covered

Core API Endpoints.

Four primary endpoints cover the full scope of property and development intelligence. Select an endpoint to explore its structure.

Property Intelligence API

Parcel and Ownership Data at Scale.

Query verified parcel records, ownership history, assessed values, legal descriptions, and deed transfers by address, APN, or geographic coordinates. Returns normalized, source-attributed records across all covered jurisdictions.

GET/v1/properties/{address}

Response fields

parcel_id
owner
assessed_value
deed_date
zoning_code
lot_size_sqft
source
confidence
Response — 200 OK
application/json
"parcel_id":"1247-MER-78701"
"owner":"Meridian Holdings LLC"
"assessed_value":2140000
"zoning_code":"MU-6"
"source":"Travis County Appraisal District"
"confidence":"high"
"last_verified":"2026-08-01"
// + developments_nearby[], source_url, geometry

Beyond the Core API.

Map tiles, change notifications, webhooks, and embeddable widgets extend what you can build with Landexar data.

Map Tiles

Render Landexar Data Layers on Your Maps.

Serve Landexar's zoning, development, and parcel layers as XYZ map tiles. Compatible with Mapbox, Leaflet, Google Maps, and any tile-based mapping library.

Change Notifications

Get Notified When Data Changes.

Subscribe to change events for specific parcels, addresses, or geographic areas. Receive structured notifications when permit activity, ownership transfers, zoning amendments, or new development projects are detected.

Webhooks

Push Intelligence Into Your Systems.

Configure webhook endpoints to receive real-time event payloads when monitored properties or areas change. Integrate directly with CRMs, internal tools, underwriting systems, or custom workflows.

Embeddable Widgets

Drop Landexar Into Any Web Experience.

Embed interactive property intelligence panels, development maps, and FutureView timelines directly into your application or customer portal with a single script tag and configuration object.

Apply for Developer Access.

The Landexar API is available to a limited number of integration partners during early access. Tell us what you're building and we'll be in touch.

PropTech platforms
Underwriting tools
CRM integrations
Investment platforms
Market analytics
Custom portals

Ready to Integrate?

Access source-backed property and development intelligence through the Landexar API.