The big decision is whether to paint or not to paint. When you look at your house from across the street, does it look tired and faded? If so, a paint job may be in order. It is often a very good investment and really spruces up the appearance of a house, adding dollars to offers from potential homebuyers.

When choosing a color, it should not be something garish and unusual, but a color that fits well in your neighborhood. Of course, the color also depends on the style of your house, too. For some reason, different shades of yellow seem to illicit the best response in homebuyers, whether it is in the trim or the basic color of the house.

As for the roof, if you know your roof leaks, repair it.  If you do not repair a leaky roof, you are going to have to disclose it and the buyer will want an entire new roof.  If you know your roof leaks and you don't repair it and don't disclose it, look forward to hearing from lawyers at some point in the future.

Otherwise, wait and see what the home inspector says. Why spend money unnecessarily?