Skip to main content

Open Property Data Association

Smart Property Data Trust Framework

Become a member Join a working group

Programme Governance Modelling Development Groups Resources Marketing Search

Become a member Join a working group

Search documentation

Start typing to search.

No page matches this search.

Open full search

Newsletter

Subscribe to OPDA updates

Occasional updates about the Smart Property Data Trust Framework, working-group progress and events.

Check the information you entered

About you

Fields marked are required.

Full name *

Organisational email address *

We use this address to send your updates.

Organisation *

Role or area of expertise *

Which working groups interest you?

Select one or more.

Finance and BankingMortgage advice, lending decisions, security, affordability and the systems that support them. ConveyancingThe legal transfer of property, including title, searches, enquiries and completion. Estate AgencyMarketing, listing, negotiation and the progression of a sale. Surveying and ValuationProperty condition, measurement, inspection, valuation and professional opinion. Property Data ServicesThe sourcing, assurance, exchange and interpretation of property information. Property TechnologyProducts, platforms and integrations that support the property journey.

I agree to receive OPDA email updates at this address. I can unsubscribe at any time. *

Read the newsletter privacy notice. Subscription is separate from working-group registration.

Leave this field empty

Subscription received

Thank you for subscribing

We will send occasional OPDA updates about the framework, working groups and events.

Candidate register
Open questions and changes
Outputs and validation

Property Pack ontology

Definition and 451-item scope
PDTF schema lineage
Current ontology model
Candidate source coverage
Technical Working Group determination
Later review and releases

Third-party inputs

PDTF schema
- Schema and supporting material
- Schema-derived ontology

Third-party inputs
PDTF schema
Schema-derived ontology
Terms and model resources
Index & glossary (A–Z)

SKOS scheme vocabularies

Unit of Area

https://opda.org.uk/pdtf/scheme/UnitOfAreaSchemeTurtle ↓

Unit in which an internal floor area is expressed (square metres or square feet).

Concepts · 2

square-feet
square-metres

Developed by Sparkling Ideas Your expert in semantic modelling and agentic engineering

Open Property Data Association

Privacy Accessibility