Practice Briefing: A practical framework for valuation and GIS-based measurement of commercial and industrial property externalities
James E. Larsen
Abstract
Purpose This practice briefing develops a coherent framework for identifying and measuring commercial and industrial externalities, addressing the lack of standardised approaches in valuation practice. Design/methodology/approach The briefing synthesises evidence from environmental economics, urban planning and real estate finance to construct a five-category typology and translate empirical distance decay patterns into GIS-ready measurement strategies. Findings Commercial externalities exhibit predictable spatial signatures that can be measured consistently using proximity-based indicators. When organised into a structured typology, these patterns provide a basis for integrating externalities into valuation and investment analysis. Practical implications The framework enables practitioners to replace subjective adjustments with transparent, replicable spatial measures, improving valuation defensibility, underwriting accuracy and communication among market participants. Originality/value To our knowledge this is the first unified, practitioner-oriented framework that consolidates empirical externality research into a usable structure tailored to commercial valuation and GIS-based analysis.
Evidence weight
Balanced mode · F 0.40 / M 0.15 / V 0.05 / R 0.40
| F · citation impact | 0.50 × 0.4 = 0.20 |
| M · momentum | 0.50 × 0.15 = 0.07 |
| V · venue signal | 0.50 × 0.05 = 0.03 |
| R · text relevance † | 0.50 × 0.4 = 0.20 |
† Text relevance is estimated at 0.50 on the detail page — for your query’s actual relevance score, open this paper from a search result.