Amy and Tony Carr's 3-level home has an appealing layout and a great location on a cul-de-sac. But its cookie-cutter construction means it won't stand out to potential buyers. They don't plan to sell anytime soon, but they want to add value to their home while making the space more comfortable for their large family. They must decide if they're going to focus on interior upgrades to give the home some pizzazz, or invest in bigger ticket items like new windows or a roof.