We've looked at a ton of really small Del Ray/old town/rosemont homes. So many of those row houses have the tiniest kitchens and only two small bedrooms. What would be (generally) the cost of adding on a pretty substantial two floor addition? We are first time homeowners so I have no idea if this would cost $100k or $300k or if it's just a terrible idea. At some point I guess you are spending too much and would never get your money back? All the houses in the higher bracket price range that are a tiny bit bigger also seem like fixer uppers but then we would have no money for renos.