Employment Conditions
When you look for properties, either avoid altogether or be very cautious if the area's economy is largely based on just one employer. If that employer shuts down or cuts back drastically, that entire area's real estate market will be dramatically affected and you could get burned. One exception to that rule would be a town that is home to a large, old, and well-established university. Such an establishment will have a steadying effect on the community that surrounds it, and there will always be a need for the many employees and students who are associated with the university.