Trulia has extensive data on comparable properties. Here's a link to get you started. it shows comps for a property on Knoll Drive in Dolan Springs, but you can select other properties and browse around.
If you search for "Dolan Springs" from the Trulia home page, you will see active property listings below the map. If we know of comparable properties for a given listing, there will be a link titled "Similar homes to [address]" in the listing display.
I hope this helps.