OPDA Knowledge base
Concept tier descriptive

Valuation

opda:Valuation

Valuation

A Valuation is a RICS-regulated professional valuation or an automated-model output of a Property’s market value. It is the basis for lender decisions, capital-gains calculations, and chain feasibility.

Why it matters

Valuations are not facts about the Property — they are judgements about its value at a specific point in time, made by a specific valuer (or model) under a specific governance regime. OPDA models the Valuation as a first-class Kind because it has its own RICS-regulated provenance chain, its own lifecycle (instructed / delivered / superseded), and its own evidence chain to the Comparables that informed it.

If you are a valuer, lender, or audit-trail tooling integrator, this is the entity that captures the judgement and its supporting evidence.

Editorial note. The hard cases below are interpretive — derived from the S008 Q4 three-criterion test recorded in the source TTL’s rdfs:comment, not lifted verbatim. Council ratification of a definitive hard-case enumeration for this descriptive Kind is pending.

Hard cases

  • Valuation superseded by a fresh instruction. A lender re-orders a Valuation closer to completion. The new Valuation is its own record; the previous persists with a superseded annotation.
  • AVM vs RICS valuer. An automated-valuation-model output is a different evidence chain than a RICS valuer’s report. Both are Valuations; the IC discriminates by valuer-attribution.
  • Valuation revoked. A Valuation is withdrawn (e.g. for governance issues). The Valuation record persists with a withdrawal annotation.

Identity Criterion

A Valuation is identified by its (valuer, Property, instruction date) triple. Two records refer to the same Valuation only if all three coincide. See the Logical tier → for the typed structure (evidence chain to Comparables, RICS-regulated provenance).

  • Property — a Valuation concerns a Property
  • Comparable — supports a Valuation
  • Survey — Surveys often inform Valuations
%%{init: {"theme": "base"}}%% flowchart LR accTitle: Valuation related-Kinds neighbourhood graph accDescr: Valuation as a RICS-regulated or AVM judgement concerning a Property; cites (0..*) Comparables as supporting evidence; often informed by a Survey; identified by (valuer, Property, instruction-date). classDef centre fill:#E1BEE7,stroke:#6A1B9A,stroke-width:3px,color:#4A148C classDef cls fill:#B3E5FC,stroke:#0277BD,stroke-width:2px,color:#01579B Valuation["Valuation
(RICS or AVM)"]:::centre Property["Property"]:::cls Comparable["Comparable"]:::cls Survey["Survey"]:::cls Valuation -->|"concerns"| Property Valuation -->|"cites (0..*)"| Comparable Survey -->|"informs (often)"| Valuation

Source ODR

ODR-0008 — Property descriptive attributes §Q4a

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