The best way to add value and increase the price of your home is by updating the exterior. One of the most cost-effective ways to do this is with a fresh coat of paint, so you should have that done before putting your house up for sale. You'll want to think about what color will appeal most to buyers, as well as whether or not you want any kind of design on it. The more time and money you spend now in order to make your property look nicer, the more likely it will be able to sell faster and for higher price.