We purchased our home in 2006 in Oakland, CA. Taxes the first year were based on purchase price. The following year the city did an assessment on our home and valued it for more and increased our taxes accordingly. Oakland home prices dropped an average of 7.7% for the year of 2007. Our home value has dropped significantly and we have many comps to prove this. Therefor we fell that our taxes should have been dropped, not raised. Is there any way we can contest this?