This is a pretty crazy government site. It shows every house in Allegheny county(which is Pittsburgh and surrionding areas) I like to look up Soprts stars like Mario Lemieux and other Pittsburgh players. Another good search is Grandview ave - Pittsburgh 19th ward. That is the street overlooking the city. If anyone else has a website like this - post it.
http://www2.county.allegheny.pa.us/RealEstate/search.asp
If you PM me I"ll tell you my name.