How to Know if You Can Finish Your Attic

Space

• The amount of space in the attic is a major factor as to whether or not it will work as a finished room. You'll need plenty of headroom in the attic once the drywall is added. According to "This Old House," a minimum of 7 feet of headroom is necessary. The floor space in the attic is another consideration. Determine if the room would be large enough to be functional, depending on how you plan to use the space. If you're making a family room, you'll need room to place furniture and leave room for playing or other floor activities. For a bedroom, measure to ensure the bed, dresser and other furniture will fit comfortably. Aim for a minimum of 70 square feet of usable floor space -- sloping walls detract from usable floor space. Look for fixtures that potentially interfere with the layout as well, such as duct work, exhaust fans and chimneys.

Structure

• You may have enough space to accommodate the furniture and activities in the attic, but you also need to ensure the floor is strong enough to hold those items. The furniture itself adds a large amount of weight to the attic joists. If several people will use the room at one time as in the case of a family room or playroom, that adds even more weight. Consult with an experienced contractor or engineer to determine if your attic is able to hold the amount of weight you plan to have in the space.

Access

• Attic access is often limited to a hole cut in the ceiling of a room below. To meet building codes, you'll need a full staircase leading up to the attic. Consider if you have a place to add a stairwell that won't interfere with the functionality of the rest of the home. You also need a second escape route for safety reasons. If you don't have the option of adding a second staircase to the attic, you need a window that is large enough to get out in case of emergency.

Utilities

• In most cases, attics lack electric outlets and vents for heating and cooling. If your attic lacks these utilities, you'll need to add them or hire a professional to run the necessary components to the attic. You also need to account for the heat that will rise to the attic and the increased moisture levels. Insulation can help control these factors. You may also need to install window air conditioners to overcome the heat in the space.