Residents in Metropolitan Atlanta counties face a kind of double-edged sword when it comes to home values. Property values have risen by 5.6% over the past year, and are currently projected to increase by another 9.8% in the coming 12 months, according to the Atlanta Business Journal. In terms of investment, that's good news, but the 49% increase in home values over the past five years has created a corresponding tax burden for some homeowners.