But there are many houses with either attached or detached garages, and these garages are often turned into additional living areas. Whether you need an extra bedroom, a home office, a music room, a craft room or a playroom, garages are ideal candidates for extra living space. As with any home improvement project, you'll want to make sure that the converted garage will have enough ventilation and light, and will be cool in the summer and warm in the winter. You will also need to make sure the garage complies with local ordinances and building codes.