The last thing you want to do when undertaking a home improvement project is to go overboard on improving your home. This means fixing up the home to the point where it becomes worth far more than nearby properties.
Down the road, when you may want to sell, potential homebuyers will be reluctant to pay, say, $200,000 for your home when others are priced at $150,000. If they want to pay that kind of money, they will likely make a purchase in a neighborhood where most of the homes sell in that price range.
Carefully measure the cost of any improvements you want to make against the overall values in your neighborhood. Otherwise, you may not recover your costs or increase your property value significantly.