If you are purchasing this home as your primary residence, you would likely expect a reduction in taxes of about 1/3 when it is reassessed in the spring. Also, keep in mind that since this is a HomeSteps home, there are closing cost incentives being offered for all owner-occupied properties with offers presented on or before January 31, 2009. If you want to know more or if I can help you further, let me know.
Current property taxes may not be what you pay on the property. You can estimate property taxes for any home on the State of Michigan Millage Estimator website
Since the language indicates this is an REO property, the estimator may not give you an accurate value. You can call the City of Dearborn Hgts to verify the 2009 assessed value of this home and use that in the estimator.
In general, taxes are paid twice per year unless escrowed in your mortgage.