If you’re looking to expand your living area, look up. Converting your attic to a bedroom, media hang, or playroom is a great way to gain space at significantly less cost than adding on. After all, you’ve got the walls, ceiling, and floor already in place. Remodeling magazine’s Cost vs. Value Report says an attic bedroom conversion returns more than 84.3% of your investment. Attic conversions have a few special requirements, though, so you’ll want to plan ahead. Here’s what you need to know.