Generally speaking, bathrooms and kitchens remodels are known to bring back a pretty good return on investment. I say igenerally because it all depends on the quality of design , materials and workmanship. Also important a consideration is how the improvements relate to the remainder of the property. There are a number of improvements which are fairly inexpensive to implement but will greatly enhance the value and marketability of a property, setting it apart from the competition.
If you are planning on improving a property to sell it in a short period of time, you should have a thorough consultation with an experienced Real Estate agent, like myself, to guide you in terms of what will give you the best bang for your bucks.