Where can I go to do this?

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1) Is there a web site that I can go to that will give me all the info about a property that I am interested in buying? I am looking for such info as the purchase price of the house, how much has the house been borrowed against, Tax info etc...

2) Is there also another web site that will give me a close number as if I had an appraisal done.

3) Lastly, is there a web site that you tend to go to alot to help you in determinating if the house you are looking at is a good buy or not?

I know that this is a lot of questions, but any help would be great. Thank you very much for your replies.

Rob-