When getting your home ready to sell, sprucing up the exterior can have a major impact on getting buyers in the door. One of the biggest decisions is whether or not to paint/stain the exterior. When you look at the home from across the street or from a distance, does it look old and faded? If so, it is often a very good investment to paint/stain the outside because it really spruces up the appearance of a house.
When deciding what color to paint, it should not be something unusual, but a color that fits in well with the neighborhood or surrounding area. I drove into a cabin community to show property and right in the middle of a number of nice looking log cabins, sat a home that had been painted turquoise - this was not appealing to my buyers. So, chose wisely.
Roofs can be another item that may need attention. If the roof leaks, fix it! If not, you will have to disclose that the roof leaks and buyers may ask you to replace the entire roof. If you know that it leaks and you don't disclose it, you are asking for trouble. If your roof is dirty and looks older than it is, have it pressure washed.
If possible, keep your yard in tip top shape. Overgrown grass and weeds can make even the nicest of homes look drab.