Why in the world would you ask that question on a national forum like Trulia? Does your "friend" owe you money? Does your "friend" owe you back child support? Is your "friend" trying to hide from you? Have you considered hiring a private detective? Seriously, why are you trying to find out that information?
It is no secret, anyone can go to the county Assessors website, here in Tucson it is Pima County Assossors site. You can look up by full name, address, or tax ID. If all you know is their name, type it in. No, you do not have to hire a detective like the other agent suggested.
I don't think any professional, outside a hired private detective, will help you provide that information about another person. Especially without knowing what you are going to do with that information.
Carlos J. RamÃrez, PC, ABR, CNE
Associate Broker/Realtor, HomeSmart â€“
Certified Negotiation Expert (CNE) http://www.SmartAZRealty.com