As you can see your question can be interpreted several ways. LOL It really does depend upon the most similar homes when pulling information from the Multiple Listing Service. Without providing any additional information you can get a very wide range of results.
If you have a specific property in mind feel free to contact me, I will email you an online evaluation no obligation. I'm in Oakland County and I do not service Troy but have access to the MLS and can recommend some good local agents to help. Number of stories, year built, basement?, garage?, above ground sqft, and any recent improvements would all change the answer provided.