If there is no improvement in the property like it is just a lot or maybe a house that still looks good then you have to wait for years before the price would increase substantially. Real estate is a long term investment although some real estate agents would say you can have a profit if you buy today and you sell next month. It is easier said than done.The best way or time to sell your property most especially in terms of estate property it is necessary or expected to be sold when or immediately the project is accomplish that is when you the building project is done. and another way is when the demand for the property is high it is the exact time to sold out property.