geospatial analysis at jefferson county property valuation administration
DESCRIPTION
Geospatial Analysis at Jefferson County Property Valuation Administration. Jay Mickle, Director of GIS & Internal Technology. About the PVA. Responsible for assessing all real property at fair market value 287,000 mapped parcels; over 311,000 total property records - PowerPoint PPT PresentationTRANSCRIPT
Geospatial Analysis at Jefferson County Property Valuation
Administration
Jay Mickle, Director of GIS & Internal Technology
Responsible for assessing all real property at fair market value
287,000 mapped parcels; over 311,000 total property records
Statutory responsibility to inspect all parcels at least once every 4 years
Real property assessments broken up by land and improvement value
About the PVA
PVA uses a 3rd party extension to ArcMap to edit & maintain Jefferson County’s parcel map
Cadastral Mapping Maintenance
Residential Comparison Neighborhoods
Residential Comparison Neighborhoods
Residential Comparison Neighborhoods
Residential Land Value Discrepancies
-Use interpolation methods to create a prediction surface for residential vacant parcels by using land-sale data.
-Extract values from the prediction surface to derive a value per square foot for each vacant parcel.
-To reduce error from any one interpolation method, three different interpolation methods will be used and averaged.
Proposed Solution
Smoothed Surface of All Study Parcels
-High Values in established up scale housing areas
-High values in “trendy” areas
-High values in areas with large new housing developments
-Low values in urban low income areas
-Low values in areas with large parcel sizes and large amounts of undeveloped land
Commercial Land Analysis - Goals
Predict commercial land value in the Central Business District (CBD) and along major transportation corridors using data based on sales of commercial vacant land in those areas.
To create a marketable booklet containing tables, maps, and charts of commercial vacant land sales and the corresponding predicted land values in the CBD and along major transportation corridors.
CBD Prediction Map
Commercial Corridor Analysis
Need to study effect of foreclosures on property values
Lower sales prices affect our entire reassessment plan
Vacant structure data also reviewed alongside foreclosures
Foreclosure Analysis