Some good ideas for second story room additions includes building more bedrooms, adding extra storage space or making a home office. A separate apartment can also be added to a second-floor addition with its own kitchen, bathroom and bedroom along with a separate entrance.
One idea is to turn a one-floor house into a Colonial home by adding another floor onto the flat-roofed attached garage and gable-roofed house. The extra floor houses several more bedrooms. The room above the garage is a bedroom with two more bedrooms and a bath located immediately above the house proper.
Another idea is to add another story to a traditional ranch that also adds three bedrooms as well as two baths and a walk-in closet. Experts suggest that after building a second floor with more bedrooms, any unused bedrooms on the first floor can be converted into a den, home office or guest room.
A second floor can also be built on only the middle section of the ranch-style house, giving the home a vaulted roof. This idea adds two bedrooms and bath to the house as well as vaulted ceilings over the kitchen and entryway. Part of the plan calls for converting the two-car garage into a great room and turning two bedrooms and a bathroom on the first floor to a master bedroom and bathroom.