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ASSESSING CONDOS USING 3D GIS B Y A M R I T B R A R, B U S I N E S S S U P P O R T C O N S U L T A N T, B C A S S E S S M E N T G eographic Information Systems (GIS) play a crucial role in producing independent, uniform and efficient property assessments. BC Assessment (BCA) has recently completed an initiative to take GIS to a whole new level by executing an innovative pilot project to explore the feasibility of adopting 3D GIS for assessing condo units in downtown Vancouver. is is the first time in the world that an assessment organization has used 3D GIS technology for the purpose of property assessments. BCA has partnered with Esri Canada, a provider of enterprise GIS technology, to pilot the company's prototype of Assessment Analyst 3D, which generates a complex 3D scene of downtown Vancouver. is technology allows appraisers to conduct detailed valuations of condominiums and individual units using 3D geoprocessing and analytics from their desktop. Over the past decade, the City of Vancouver's condo market has grown at twice the rate of all other property types over the same period. is has posed a TECH TALK Figure 1: Finding data-entry errors that are difficult to spot within spreadsheets Canadian Proper ty Valuation | √Čvaluation Immobili√®re au Canada | Volume 58 | Book 4 / Tome 4 | 2014

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