How Local Should an AVM Be? Spatial Resolution, Market Regionalization in Automated Valuation Models
This paper reframes the locality of Automated Valuation Models (AVMs) as a partial-pooling problem involving spatial resolution, market regionalization, and external anchors, demonstrating through a comprehensive analysis of Korean commercial property transactions that while an optimal spatial resolution exists and regionalization improves accuracy, these mechanisms are only partially interchangeable and external anchors can significantly alter model selection and performance.