As a home seeker, I would suggest fixing anything that would be a deal breaker for the buyer, like the roof, drafty windows, plumbing, or electrical. Those are the things they will still be paying for after closing. So if you can fix the stuff that will save them money through out the life of the house, that means something. Most homebuyers are not house flippers, or have the kind of wealth that will get them homes with "Viking stoves" and "marble counter tops". However, they don't want to spend hundreds of thousands of dollars, just to spend tens of thousands more. We want a one and done. After those major things, bathrooms and kitchens. When I look at a house, I look for these things. Also another reply earlier, mentioned curb appeal. They are so right, if the outside of the house doesn't look kept people will assume the inside is just as bad and just scroll on by. It's one of the cheapest, and helpful upgrades you can make. You would be surprised at the difference a neatly edged, freshly mowed lawn, along with well trimmed trees or bushes can make. Add to that some nicely placed flowering plants. And people will be checking your house out left and right. I'm not saying all that has to be done just what is the most important in correlation to your budget. As long as the mechanical long term affecting updates are made you can get away with visual upgrades like new backsplash, tiling, flooring and a good color scheme.