3. Avoid saying, "While we're at it, we might as well ... " Often the trick to managing a renovation project is knowing when to say when. It's really easy to go beyond what you initially thought would be the project, because everything in a house is so interconnected. But unless you have the funds and the desire to tackle the whole house at once, take it in stages. But first make sure you have a game plan, so you know what the end result will be.