"This Old House: Brokers Tell All: 10 Ways to Boost House Value" give this great advice, "Before thinking about a fancy upgrade to the kitchen, address the basics. Insulate the attic, repair plumbing leaks, replace rusty rain gutters, inspect the furnace and the septic system, replace or repair leaky windows, install storm doors, weed the flower beds. These kinds of fixes go a long way toward value. Jessica Gopalakrishnan with HomeGain says, "Starting with a couple hundred dollars on a few things could increase the value of your house by a few thousand dollars. People are surprised by that. It's exciting. People think they have to put in a lot of money to see a big difference and they really don't."