What if you get stuck with a property that actually depreciates?

I understand that property is an appreciating asset as opposed to cars etc which depreciate. What if you get stuck with a property that actually depreciates? This is not uncommon in the current housing market eg, my home has dropped in value by $80-$100K over the past 3 years.

The property value has only really depreciated if sold at the time for a loss. If investors are able to ride the bad times in the short term it's likely they'll see positive results in the long term. This is a fairly generic view on all investment types.