When you write "property values" do you mean list price, tax value, sale price, or market value as these can and do differ?
Generally speaking all you can find on sites like this will be a map with list prices. If you click on "Search" in the green bar at the top of every Trulia page and enter the zipcode your interested in you'll get the results and can select a map view if this is what you'd like. The llimitations of searching like this is that without any real parameters you end up looking at every listing. I just entered 46567 to see what came up and I saw listings ranging from $69,000 - $11,000,000 and if you're anything like most buyers you're price range isn't quite that broad.
If you're seriously looking to buy a home my suggestion is to spend a little time looking for an experienced buyer broker who can help you. I've attached a link below that will give you an idea of the questions you should be asking and once you've read it, you can click on "Browse" then "Agent Directory" (again in the green bar at the top of Trulia's pages and enter the zipcode of interest and you'll get a list of some of the best agents working in that area. Then speak with some of them till you find someone you're comfortable with and they can create much more specific detailed searches to get you the type of properties you're really interested in seeing.
Sam you nee dto check if your city and or state requires a business license. You will need liability insurance to work for virtually all banks. The best thing to do is to meet with local agents who specialize in listing bank owned home in your areas. most agents are in charge of preservation tasks like trash out.