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challenge for employees to maintain up-to-date property information on condo units as rapid growth continues. BCA does not have the resources to inspect these properties on an ongoing basis, and key value drivers in Vancouver's market, specifically views, cannot be easily determined. e power of 3D GIS allows the user to collect data on these sorts of market drivers without having to leave the office. e method of analyzing properties in a 3D GIS application presents a similar alternative to the current 2D GIS Desktop Review process used by BCA since 2009. e data generated within a 3D scene provides BCA the opportunity to deliver a new form of property information to customers and stakeholders, and also expands the targeted customer base beyond property owners, First Nation communities, and local governments. With 3D GIS, BCA will be able to deliver in-depth property information to organizations in sectors of real estate, finance and investment, marketing and media, and emergency response. is additional information aligns with the strategic journey to become a customer-focused property information company, powered by a Business Innovation program. Over the course of the pilot, BCA has broken down the analysis of Esri Canada's application into two streams: the tools associated with helping "3D GIS CAN RECREATE A PROPERTY'S VIEW TO PROVIDE APPRAISERS AND CUSTOMERS WITH QUALITATIVE EVIDENCE TO SUPPORT, AND BETTER UNDERSTAND, THE VIEW SIGHTLINE STATISTICS AND RESULTING ASSESSED VALUE." TECH TALK Figure 2: Scientifically quantifying the quality of a view using sightline analysis appraisers carry out their work, and the solution that complements the current system of appraisal with a multiple regression analysis formula. Although the solution poses potential for significant cost-savings, the current regression formula is in the process of refinement to reduce the number of assessment outliers and generate a more accurate assessment solution to meet BCA's current standards. In the interim, BCA is currently focusing on Esri Canada's develop- ment of the tools associated with Assessment Analyst 3D. ese include sightline analysis to quantify views, developing a GIS layer that allows appraisers to see a digital recreation of someone's view, visual auditing tools to verify if property data is correct, and ways to integrate 3D GIS into the current computer assisted mass appraisal (CAMA) system. e following images showcase various features and benefits in using Esri Canada's application for creating assessments of high-density areas. Key findings throughout the pilot provided insight for appraisers on the potential for A A3D to help manage property information within a 3D GIS instead of within spreadsheets (see Figure 1). A number of data-entry errors were resolved during the process of reviewing property information using Assessment Analyst 3D. When analyzing information in a 3D GIS model, outliers become highly apparent Volume 58 | Book 4 / Tome 4 | 2014 | Évaluation Immobilière au Canada | Canadian Proper ty Valuation 33

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