Best place to find historic data for home values by neighborhood?

[Joe Henry]

Just like the title says, I'm trying to find a chart of average home values going back to at least 2000, by neighborhood if possible. Zillow doesn't usually go back that far and often is only by city.

Any tips on where to find this data?

The purpose of this is to compare asking prices with where the market is now to what the seller paid when they bought the property.