# Landmark Planning API (powered by Barbour ABI)

**Canonical:** https://apis.io/apis/landmark-information/landmark-planning-api/  
**Provider:** Landmark Information Group — https://apis.io/providers/landmark-information/  
**Base URL:** https://api.barbour-abi.com/v4  
**Documentation:** https://www.landmark.co.uk/products/planning-api/planning-api-documentation/

Landmark Planning API (powered by Barbour ABI) is one of 10 APIs that [Landmark Information Group](https://apis.io/providers/landmark-information/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Planning, Geospatial, Land Development, and Commercial Real Estate. The published artifact set on APIs.io includes API documentation and an API reference.

RESTful planning-application data API combining Barbour ABI project information with Landmark geospatial data, covering UK and Republic of Ireland planning applications from 1 January 2017 (with historical project data back to 1997) across 19 documented attributes including UPRN, easting/northing, latitude/longitude and GeoJSON/WKT site boundaries. Documented operations are GET login, GET logout, GET customers, GET lookups, GET locations (preview search with a JSON query DSL and point-radius distance filtering) and GET locations/{project_id} (full details, which consumes a credit under pay-as-you-go). Documented in public HTML only — no OpenAPI, Postman collection, or other machine-readable contract is published. Authentication is a Landmark-issued x-api-key plus a Basic-auth login (base64 of username and SHA256-hashed password) that returns a bearer token valid until 30 days of disuse.

## Machine-readable artifacts (8)

- **Documentation** — https://www.landmark.co.uk/products/planning-api/
- **APIReference** — https://www.landmark.co.uk/products/planning-api/planning-api-documentation/
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/landmark-information/refs/heads/main/apis.yml
- **Arazzo** — https://raw.githubusercontent.com/api-evangelist/landmark-information/refs/heads/main/arazzo/_index.yml
- **Arazzo** — https://raw.githubusercontent.com/api-evangelist/landmark-information/refs/heads/main/arazzo/landmark-information-assemble-contract-pack.yml
- **Arazzo** — https://raw.githubusercontent.com/api-evangelist/landmark-information/refs/heads/main/arazzo/landmark-information-order-compliance-check.yml
- **Arazzo** — https://raw.githubusercontent.com/api-evangelist/landmark-information/refs/heads/main/arazzo/landmark-information-quote-to-instruction.yml
- **Arazzo** — https://raw.githubusercontent.com/api-evangelist/landmark-information/refs/heads/main/arazzo/landmark-information-subscribe-valuation-milestones.yml

## Other Landmark Information Group APIs (9)

- [Landmark Geodata Web Map Tile Service (WMTS)](https://apis.io/apis/landmark-information/landmark-geodata-web-map-tile-service/)
- [Landmark Information Group Activities API](https://apis.io/apis/landmark-information/landmark-information-activities-api/)
- [Landmark Information Group Cases API](https://apis.io/apis/landmark-information/landmark-information-cases-api/)
- [Landmark Information Group Document Vaults API](https://apis.io/apis/landmark-information/landmark-information-document-vaults-api/)
- [Landmark Information Group Documents API](https://apis.io/apis/landmark-information/landmark-information-documents-api/)
- [Landmark Information Group Milestones API](https://apis.io/apis/landmark-information/landmark-information-milestones-api/)
- [Landmark Information Group Order Experience API](https://apis.io/apis/landmark-information/landmark-information-order-experience-api-api/)
- [Landmark Information Group Quotes API](https://apis.io/apis/landmark-information/landmark-information-quotes-api/)
- [Landmark Information Group Transaction Requests API](https://apis.io/apis/landmark-information/landmark-information-transaction-requests-api/)

## Tags

Planning, Geospatial, Land Development, Commercial Real Estate

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/landmark-information/landmark-planning-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/landmark-information/.