Boulder County Assessor's Office GIS staff work hands on with appraisers to improve data/attributes for mass appraisal. You will get a brief overview of how GIS is used to facilitate fieldwork, find and fix inaccurate attributes, and speed up the review and update of property information.
Topics covered will include the mapping of features known to affect property values, as well as those not always associated with mass appraisal. Additionally, differences between data gathering for properties in the mountains vs. plains will be highlighted.
2013 GISCO Track, Using GIS to Help Appraisal Staff Value Property by Pete Coventry and Adam Hoppe
1. Getting it Done
Using GIS to Help Appraisal Staff Rapidly Update
and Improve Property Data
Pete Coventry, Adam Hoppe
Boulder County Assessor’s Office
GIS Department
Boulder, Colorado
2. Overview
• Boulder County
• Assessor’s Office structure
Data Mining
• From the Assessor’s Database
• Getting it into GIS
Focus on Residential Properties
3. GIS for Appraisal work
• In the field
• Capturing Attributes (valuation)
•
Analysis & Modeling
8. How we work
Why is property Assessed
• Basis for generating tax revenues for local services
Assessors Role
• Identify and values property within the county in
accordance with state law
• Equalize property values/
taxes distributed fairly
Re-valued every odd # year
11. Data Mining
Why and How
• Requests for information
– Public, partners, other County
departments
• Helps us improve quality of information
• Understand what we’ve already got
– Right, Wrong, Inconsistent
– Know what to fix
18. Permit Fieldwork
• Status as of January 1st
• Remodels, other high $ improvement adds
value
• Generates tax revenue for our districts
• New residential construction
– Vacant to residential changes assessment rate
– Determined by existence of a foundation
79. Thanks for attending!
Any questions??
Adam Hoppe – ahoppe@bouldercounty.org
Pete Coventry – pcoventry@bouldercounty.org
Adam Hoppe & Pete Coventry
Boulder County Assessor’s Office
GIS Department
Boulder, Colorado
82. Sales Ratio = 1.6
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•
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•
•
Sold for $514,000
TMADJ SP = $513,000
ESP = $800,000
Overvalued ESP
Time for review
83. Sales Ratio = 0.81
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•
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Sold for $675,000
TMADJ SP = $660,000
ESP = $540,000
Underestimated ESP
Appraiser will review property
attributes to determine if
incorrect or missing
84.
85.
86.
87. Coming Soon…
Bye, bye ArcReader
Hello ArcGISExplorer
• More bells and whistles and flexibility for the
users (appraisers)
• Much Faster
• More customization on the front end which
helps deliver more useful maps
• More programming… C#