An extra room means exactly that. Homeowners who choose this type of an addition often do so to add a family room, bedroom or multiple spaces. When you want to add an additional room to your home, you typically have two options: build out or build up. And if you add extra space to your house you add money to your house. If you are looking to add extra space and double the value of your house go for an addition and California Construction Bay Area Inc. can help you archiving it. Just call us today for your free appointment at 800-216-0032.