ENKTIMIO · MODEL GOVERNANCE
Evidence before confidence
A large number on screen may look precise without being reliable. The right question is not only “what is the value?” but “what evidence supports this indication?”.
Field-level provenance
Address, area, price, year, rent and documents do not have equal quality because they share a form. Each field should retain its source, date, collection method and verification status.
Measurable uncertainty
Ranges should be calibrated on unseen transactions and reviewed by area, property type and data density. Until then, they are labelled sensitivities rather than probabilities.
Abstention is a feature
When relevant data is insufficient, declining to produce a final value is the most useful answer. Abstention protects the user and creates a clear backlog of evidence to obtain.
Sources and further reading
Curated primary standards, official guidance and foundational research. Source register reviewed 31 August 2026.
- IVSC — International Valuation Standards (2025)International framework with dedicated requirements for Data & Inputs and Documentation.
- IAAO — Standard on Automated Valuation Models (2018)AVM principles, data management, quality assurance and the cost approach.
- IAAO — Standard on Mass Appraisal of Real Property (2023)Model specification, calibration, data quality and out-of-sample testing for mass appraisal.