OPDA Knowledge Base

Seven workstreams for the Property Data Trust Framework — from the governance that makes the standard authoritative to the implementation guides that get you building today.

Strategy

Why OPDA exists, the UK Industrial Strategy backdrop, the three programme phases (Sandbox → Live → National) and the live project roadmap.

  • Project roadmap
  • Programme phases
  • UK Industrial Strategy
  • Smart Data Scheme context
Open Strategy

Governance

How OPDA is governed, the UK government initiative it sits inside, and the published rules that make the standard authoritative.

  • UK initiative
  • DPMSG · ToIP layers
  • Conformance · change management
  • Lifecycle · risk & liability
Open Governance

Modelling

The technical semantic-modelling work — schemas, bounded contexts, data dictionary, business glossary, ontology, SHACL, JSON-LD.

  • Standards stack · Bounded contexts
  • PDTF overlays
  • Data dictionary (8,458 properties)
  • Business glossary (554 concepts)
  • OWL · SHACL · JSON-LD
Open Modelling

Implementation

How to build — install @pdtf/schemas, compose overlays, validate, work with verified claims and JSON-LD.

  • Quickstart (~3 min)
  • Schema composition
  • Validation (Ajv)
  • Verified claims (W3C VC)
Open Implementation

Adoption

Member implementations, Sandbox pilots, Smart Data Challenge prize entry, the HMLR Local Land Charges programme.

  • 13 OPDA founding members
  • 200+ councils on HMLR LLC
  • SDCP Innovators prize 2025
  • Live CLC + OPDA + Raidiam Sandbox
Open Adoption

Library

The curated reading list — every document, transcript, recording and external reference held in the project archive.

  • 500 MB source archive
  • 5 cloned upstream repos
  • 16 OPDA website pages · 70 blog posts
  • NTS Material Info recovery archive
Open Library