Real estate properties appreciate in value over time. That is obvious because real estate operates and is affected by the economic law of supply and demand. Nobody is making land - what we have is all we got! But, housing needs continue to increase because of increase in family sizes, influx of immigrants, etc. etc. So even in bad economy or good economy there is always a need for housing. Because people continue to live in a house!!! So, to answer your question: Yes, there is always the possibility for houses/real estate to appreciate in value.
If you can email me the specifics of your rental investment criteria, I can guide you to what and where you should put your investment dollars. Please visit our website at http://www.CarolinaMaxRealty.com
and get more information about real estate investment, property management, etc. selling, etc. Good luck.