Width

• The smallest standard width of a two-car garage is 20 feet, which will provide just enough space to fit two cars side by side. A 22-foot garage will provide a small amount of additional space for storage.
  
  

Depth

• The minimum standard depth of a two-car garage is 20 feet. Increasing the garage depth to 28 feet will provide enough space for longer vehicles or additional equipment such as a work bench or shelving.
  
  

Height

• The standard height of a two-car garage is eight feet.
  
  

Door Size

• The standard height for a two-car garage door is between seven and nine feet. The standard door width is between 12 and 18 feet.
  
  

Attached vs. Free-Standing Garages

• The size of an attached two-car garage is typically based on the size of the house and cannot be altered by the homeowner. If building a free-standing garage, the homeowner can determine the size based on vehicle dimensions and storage needs.