Comptroller GISComptroller GIS andand

Property DataProperty Data

Ken MorrellKen MorrellAssessment Systems ManagerAssessment Systems Manager

Division of Property AssessmentsDivision of Property AssessmentsFebruary 22, 2007February 22, 2007

Comptroller Divisions Using and Comptroller Divisions Using and Supporting GIS Supporting GIS

•• Office of Local GovernmentOffice of Local GovernmentImplement and manage ComptrollerImplement and manage Comptroller’’s enterprise s enterprise geodatabasegeodatabaseEncourage county participation in TNBMPEncourage county participation in TNBMPPerform spatial parcel updates (53 counties) Perform spatial parcel updates (53 counties)

•• NonNon--participating countiesparticipating counties•• Participating counties electing not to perform local Participating counties electing not to perform local

maintenancemaintenance

Support local maintenance of spatial data (42 Support local maintenance of spatial data (42 counties)counties)

Comptroller Divisions Using and Comptroller Divisions Using and Supporting GISSupporting GIS

•• Office of Local GovernmentOffice of Local Government (cont(cont’’d.)d.)Encourage and facilitate county migration Encourage and facilitate county migration to geodatabaseto geodatabaseProvide training on parcel maintenance in Provide training on parcel maintenance in geodatabasegeodatabaseDevelop customized GIS functionalityDevelop customized GIS functionalitySupport users of GIS within ComptrollerSupport users of GIS within Comptroller’’s s officeofficeAssist with redistricting of legislative Assist with redistricting of legislative boundariesboundaries

Comptroller Divisions Using and Comptroller Divisions Using and Supporting GISSupporting GIS

•• Division of Property AssessmentsDivision of Property AssessmentsMonitor and assist counties in the appraisal and Monitor and assist counties in the appraisal and assessment of property for tax purposesassessment of property for tax purposesProvide system resources for assessment (CAAS)Provide system resources for assessment (CAAS)Measure the level and uniformity of appraisalsMeasure the level and uniformity of appraisalsProvide training to county assessment personnelProvide training to county assessment personnelAdminister the Property Tax Relief ProgramAdminister the Property Tax Relief ProgramGIS FunctionsGIS Functions

•• Use GIS analysis to enhance the assessment processUse GIS analysis to enhance the assessment process•• Provide basic GIS analysis capabilities to AssessorsProvide basic GIS analysis capabilities to Assessors•• Provide onProvide on--site support of GIS activities in DPA regional site support of GIS activities in DPA regional

and county Assessorsand county Assessors’’ officesoffices

Comptroller Divisions Using and Comptroller Divisions Using and Supporting GISSupporting GIS

•• Office of Management Services Office of Management Services -- Information Information Technology SectionTechnology Section

Provide and supportProvide and support•• NetworkNetwork•• ServersServers•• Oracle databaseOracle database

•• Other Comptroller Divisions Using GISOther Comptroller Divisions Using GISOffice of State Assessed PropertiesOffice of State Assessed PropertiesState Board of EqualizationState Board of Equalization

MapViewer ApplicationMapViewer Application

•• For use in property assessment function by For use in property assessment function by state and county personnelstate and county personnel

•• Developed inDeveloped in--house using house using Visual BasicVisual Basic and and ESRI MapObjectsESRI MapObjects

•• Uses ESRI shapefiles primarilyUses ESRI shapefiles primarily•• Can run standalone or networkedCan run standalone or networked•• Can run as an independent application or in Can run as an independent application or in

conjunction with conjunction with CAAS Local Assessor SystemCAAS Local Assessor System•• Provides Provides useruser--friendly interfacefriendly interface customized customized

for use in property assessmentfor use in property assessment

MapObjects Pros & ConsMapObjects Pros & Cons

•• ProsProsFunctionalityFunctionalityStabilityStabilityConnects to shapefiles, coverages and SDE Connects to shapefiles, coverages and SDE geodatabasesgeodatabasesLowLow--cost deployment licensescost deployment licenses ($80 per license on ($80 per license on state contract in groups of 25)state contract in groups of 25)

•• ConsConsNot the latest technologyNot the latest technologyDoes not connect to personal geodatabasesDoes not connect to personal geodatabasesDevelopment time and effort requiredDevelopment time and effort required

MapObjects Pros & ConsMapObjects Pros & Cons

•• Bottom LineBottom LineHas provided a means to use the TNBMP data for Has provided a means to use the TNBMP data for analysis purposesanalysis purposesLow deployment cost has allowed GIS analysis Low deployment cost has allowed GIS analysis capabilities to be deployed to many more users capabilities to be deployed to many more users 107 Comptroller users in 4 divisions107 Comptroller users in 4 divisions236 county users in 28 Assessors236 county users in 28 Assessors’’ offices (county offices (county option)option)New technology will be evaluated over timeNew technology will be evaluated over time

MapViewer Basic FunctionsMapViewer Basic Functions

•• View TNBMP data layers or layers from View TNBMP data layers or layers from other sourcesother sources

•• Find parcel by owner name, property Find parcel by owner name, property address or parcel IDaddress or parcel ID

•• Select by point, line, polygon, rectangle Select by point, line, polygon, rectangle •• Display attribute data upon parcel Display attribute data upon parcel

selectionselection•• IdentifyIdentify

MapViewer Basic FunctionsMapViewer Basic Functions

•• Zoom and panZoom and pan•• Measure line and measure areaMeasure line and measure area•• View thematic mapsView thematic maps•• Label featuresLabel features•• Print mapPrint map•• Export map to imageExport map to image

MapViewer Advanced FunctionsMapViewer Advanced Functions

•• Select parcels by any attributes in CAASSelect parcels by any attributes in CAAS•• View AssessorView Assessor’’s property record card by s property record card by

clicking on mapclicking on map•• View appraisal and other statisticsView appraisal and other statistics•• Produce a variety of tabular reports from Produce a variety of tabular reports from

parcels selected spatially or by attributes parcels selected spatially or by attributes •• Parcel overlayParcel overlay•• Parcel bufferParcel buffer

MapViewer Screen ShotsMapViewer Screen Shots

MeigsMeigs County County –– Full ExtentFull Extent

By Market AreaBy Market Area

With Full County With Full County OrthophotoOrthophoto ((MrSIDMrSID))

Map SelectionMap Selection

Basic Property Map for Selected AreaBasic Property Map for Selected Area

Property Classification ThemeProperty Classification Theme

Parcels with Parcels with OrthophotoOrthophoto

Property Classification Theme and OrthoProperty Classification Theme and Ortho

Soils ThemeSoils Theme

Parcel Overlay with TreesParcel Overlay with Trees

Contour with Elevations (Value Added Layer)Contour with Elevations (Value Added Layer)

Label Example (Appraised Value)Label Example (Appraised Value)

Property Record Card Generated from MapProperty Record Card Generated from Map

Sale Year Theme with Sale Price LabelsSale Year Theme with Sale Price Labels

Sale Year Theme with Price per Bldg Sq Ft LabelsSale Year Theme with Price per Bldg Sq Ft Labels

Soils Overlay and BreakdownSoils Overlay and Breakdown

Parcel BufferParcel Buffer

Spatial Selection (Line selection tool)Spatial Selection (Line selection tool)

Tabular Report from Spatial SelectionTabular Report from Spatial Selection

TeleAtlasTeleAtlas Intelligent Street CenterlinesIntelligent Street Centerlines

Appraisal/Sales Analysis from Spatial SelectionAppraisal/Sales Analysis from Spatial Selection

General Statistics General Statistics –– Elevation ExampleElevation Example

ConclusionConclusion

GIS has become an important part of GIS has become an important part of everyday work in assessment everyday work in assessment

officesofficesDiscovering propertyDiscovering propertyAppraisal for property tax purposesAppraisal for property tax purposesEqualizationEqualizationAssisting the publicAssisting the public

Questions ???Questions ???