Baltimore City Property Tax Map

Ryan J. SmithJune 2, 2013

Motivation

• Limited development experience

• Mapping seems most accessible from development as well as usage perspectives

• Start with AppsForPhilly Property Tax App, build from there

Baltimore Tax Facts

Baltimore City Property Taxes are HIGH

• Current Baltimore City Tax Rate:• $2.268 for every $100 of assessed property value (LiveBaltimore.com)

• Current Baltimore County Real Tax Rate:• $1.10 per $100 of assessed property value (BaltimoreCountyGov.com)

http://www.livebaltimore.com/resources/cityindex/property_taxes/

http://www.baltimorecountymd.gov/Agencies/budfin/customerservice/taxpayerservices/taxrates.html

Assessment & Appeal

• Property values are assessed by Baltimore City every 3 years• Homeowners may appeal this assessment if they disagree with it

• An important consideration of the appeal process is the assessed value of comparable homes

• While this information is available online, it is difficult to find and compare records within a small geographical area

• Introducing:Baltimore City Property Tax Map

• Built using property geography records and city property tax records provided by the city of Baltimore

• Map currently hosted by Mapbox.com

Viewable at Multiple Scales

View Individual Addresses View Trends Over Larger Areas

Tooltips Provide Specific Information

Tools Used

• Property Tax Values and Property Geometry:

• Street maps from OpenStreetMaps

• Data exploration and munging done: Quantum GIS

• Map tile production: TileMill

• Map hosting: Mapbox.com

https://data.baltimorecity.gov/

Future Additions:

• Improved interface, search tools, optimized for speed

• Filter by square footage, bedrooms, etc.

• Add map layers illustrating property tax assessed versus tax paid