Prior to purchasing a home I recommend getting a Home Inspection to determine the condition of the home.  A thorough Home Inspection can uncover unseen issues that weren't noticed through your initial tour of the home. 

What's a home inspection?
A home inspection is when a paid professional inspector -- often a contractor or an engineer -- inspects the home, searching for defects or other problems that might plague the owner later on. They usually represent the buyer and are paid by the buyer. The inspection usually takes place after a contract between buyer and seller has been signed.

Here are some of our Local Preferred  Home Inspectors:

AmeriSpec Inspection Services

All In One Home Inspection, LLC

CQI Home Inspections