How to build a wood free standing carport

Updated February 21, 2017

If you live somewhere with inclement weather, you may need protection for your vehicles. While a garage is the usual place to keep your car, often the garage is used for storage and there is no room for the vehicle. When this happens, you may need to build a carport to store your cars. A carport can protect your vehicles from most bad weather.

Dig four holes using the post hole digger. The holes should be 45 cm (18 inches) deep and form a rectangle which is 2.4 m (8 feet) on one side and 3.6 m (12 feet) on the other (this measurement is taken from the edges of the rectangle). The inside measurements will be 2.2 m by 3.4 m (7 feet 4 inches by 11 feet 4 inches).

In the centre of the long sides of the rectangle, dig two more holes that are 45 cm (18 inches) deep. You should now have six holes.

Mix the cement with water. It should be the consistancy of wet mud.

In the front holes of your car port you will place the 3.3 m (11 foot) 10 by 10 cm (4 by 4 inch) boards. Make sure they are level on all sides and pour cement in the holes to hold them in place. Repeat this with the other posts, working backward. Behind the 3.3 m (11 foot) pieces should be the 3.15 (10 foot 6 inch) pieces, followed by the 3 m (10 foot) pieces. Make sure all are level and are placed in cement.

Wait for the cement to dry. Place the 3.6 m (12 foot) long 5 by 15 cm (2 by 6 inch) pieces along the long sides of the rectangle and attach them with screws. The boards should slope downwards from front to back.

Place the two 2.2 m (7 foot 4 inch) boards in between the front and back posts. Attach them to the posts using the corner braces and flat brackets.

Place your pieces of 1.8 cm (3/4 inch) plywood in three section on top of your frame. Screw the plywood to the top of the frame.

Roll out the roofing on top of the plywood and nail it down.


This carport should fit one standard-size automobile. If you would like to fit two cars underneath, simply double the width measurements and get double the plywood.


While it is not necessary to slant the roof, it is a good idea. If the roof is not slanted, moisture and leaves will begin to accumulate on your roof, which will speed decay.

Things You'll Need

  • post hole digger
  • cement mix
  • 2 pieces of 10 by 10 cm (4 by 4 inch) posts that are 3.3 m (11 feet) long
  • 2 pieces of 10 by 10 cm (4 by 4 inch) posts that are 3.15 m (10 1/2 feet) long
  • 2 pieces of 10 by 10 cm (4 by 4 inch) posts that are 3 m (10 feet) long
  • 2 pieces of 5 by 15 cm (2 by 6 inch) that are 3.6 m (12 feet) long
  • wood screws
  • 2 pieces of 5 by 15 cm (2 by 6 inch) that are 2.2 m (7 feet 4 inches) long
  • 4 flat brackets
  • 4 corner braces
  • 3 pieces of 1.2 by 2.4 m (4 by 8 foot) 1.8 cm (3/4 inch) plywood
  • level
  • roll roofing
  • roofing nails
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About the Author

R.L. Cultrona is a San Diego native and a graduate of San Diego State University. She holds a Bachelor of Arts in theater, television and film with a minor in communications and political science. She began writing online instructional articles in June 2009.