Most garage doors are 8 feet by 7 feet or 9 feet by 7 feet. The size of the doors is dependent on the home and what will be stored in the garage.
The standard size for one-car garages varies between 12 feet by 20 feet and 14 feet by 22 feet. These units allow space for one vehicle and ample room for storage.
In a standard construction as of 2014, garage doors are 8-feet wide. The doors can range in size, however, up to 20 feet. In some places, garage doors can also be less than 8-feet wide.
A standard two car garage is 24 feet wide by 24 feet long. The size of a garage can be adjusted to the homeowner's needs and can be as small or as large as necessary.
Single-car garages are typically a minimum of 12 feet wide and 20 feet deep. Two-car garages are generally a minimum of 18 feet wide and 20 to 24 feet long, depending on the length of the vehicles.
Automatic garages use an electrical motor to open and close the door. Because garage doors are so heavy, this motors connects to a cable and pulley system and a large torsion spring to convert the fast motor rotation into a slow and smooth pulling action.
Garage doors typically range from 9 feet to 20 feet wide and 7 feet to 8 feet tall. Popular widths for one-car garage doors are 8 feet, 9 feet or 10 feet, while those for two-car garage doors are 12 feet, 14 feet or 16 feet.