Open Property Data Association

Surveying and Valuation · From OPDA

Three conversations that invite a useful contribution.

Post 1 of 3

The invitation

A field-notebook spread separates property observations, measurements, professional judgement and inspection limits. Open Property Data Association branding appears below the illustration.

Your experience can help shape better property information.

At the Open Property Data Association (OPDA), we are inviting surveyors, valuers and people who use their findings to contribute to the Smart Property Data Trust Framework.

Help explain how measurements and findings should carry their basis, qualifications and uncertainty beyond the original report.

You do not need data-modelling expertise. Your professional experience and judgement can help shape the work.

Registration expresses interest, subject to OPDA review, not automatic membership or access.

Explore the working groups and register your interest: https://opda.org.uk/join?context=surveying-and-valuation

#PropertyData #SPDTF

Post 2 of 3

A question from real work

How surveying and valuation experience contributes Practitioners bring evidence to working groups, who review meaning to inform the draft specification. Two floor-area figures can differ because they include different spaces, even when both measurements are accurate. OPDA · SURVEYING AND VALUATION Professional judgement shapes shared meaning. PRACTITIONERS Bring evidence Authorised examples,questions and exceptionsfrom real work. WORKING GROUPS Review meaning Challenge draft definitionsand clarify the distinctionsthat matter. WORK IN DEVELOPMENT Shape the specification Help develop shareddefinitions for propertyinformation. A QUESTION FROM YOUR FIELD Two floor-area figures can differ because they include different spaces, even when bothmeasurements are accurate. Register interest at opda.org.uk/join · Participation is subject to OPDA review.
Professional evidence informs review of the draft specification. This is work in development, not an adopted requirement.

An inspection or valuation produces findings that others rely on. Observations, professional judgements and limitations need to remain distinguishable when those findings are shared.

Two floor-area figures can differ because they include different spaces, even when both measurements are accurate.

At the Open Property Data Association (OPDA), our working groups need professional experience to help make these distinctions clear. Help explain how measurements and findings should carry their basis, qualifications and uncertainty beyond the original report.

Registration expresses interest, subject to OPDA review, not automatic membership or access.

Register your interest: https://opda.org.uk/join?context=surveying-and-valuation

#PropertyData #SPDTF

Post 3 of 3

What you can contribute

Your professional experience belongs in the discussion.

You do not need to be a data modeller to help improve property information.

Contributors can explain the language and rules used in their work, bring authorised examples, review draft definitions and challenge assumptions.

At the Open Property Data Association (OPDA), we want the definitions to reflect real work, including difficult cases.

Registering is an expression of interest. OPDA reviews each submission and confirms the next steps. It does not automatically give membership or access.

Find your working group: https://opda.org.uk/join?context=surveying-and-valuation

#PropertyData #SPDTF

Explore the working groups