In some home designs, basements and cellars are nothing more than storage or utility spaces in a house used to hold fuse boxes, air-conditioning and water-heater systems, breaker panels and the furnace. Today, savvy homeowners have completely waterproofed their basements and expanded the use of their below-ground space, converting it into a thoughtful extension of their aboveground living space. The design minded have also turned their basements into entertainment lounges with a full wet bar, a guest room, a man cave, a home gym and a home office.

Find basement design ideas here.