Commissioner Jeff Rader offers a very informative response to the recent, confusing-to-many property tax statements that DeKalb County issued recently. In his statement, he explains how to file for an appeal:
See http://www.commissionerrader.com/reader-county-news/items/id-2012-property-assessment-notices.html
Update: AJC reports on puzzling property tax assessments in DeKalb County.