DIY Trailer Plans


If you regularly need to haul things, odds are you will want a trailer to make moving equipment easy. While completed trailers are available, it is possible to build your own. It's a great way to save when looking to solve your hauling needs.

Tools and Materials

  • First, purchase a trailer frame that includes a metal structure for the bottom of your trailer and wheels. These usually come in kits and include instructions. You will also need five pieces of 4-by-4 that are 4 feet long, a 4-by-8 piece of 3/4-inch plywood, two 3-by-8 pieces of 3/4-inch plywood, two pieces of ¾-inch plywood that is 3 feet by 49 1/2 inches, three heavy-duty hinges, two latches, 20 bolts at least 6 inches long, 20 nuts, a drill, and wood screws.

Trailer Frame and Braces

  • Build your trailer frame using the instructions in the kit. For this project, the best frame is 4 feet by 8 feet. Once the frame is complete, you will see a 4-foot-by-8-foot metal rectangle with three metal support braces in the center. Using your drill, drill two holes in the longer sides of the frame where the top and bottom and the support braces meet the sides. These holes should be about 1 inch apart. Drill corresponding holes in the ends of the 4-by-4. Place the 4-by-4 on top of each brace and bolt to the trailer frame.

Floor and Sides

  • Next lay your piece of 4-foot-by-8-foot plywood on top of the 4-by-4s. The edges of the plywood should match the edges of the trailer frame. Next, place your 3-foot-by-8-foot pieces of plywood on the sides of the 4-foot-by-8-foot plywood and screw them in. Do not place the edges on top of the plywood as this will cause you to have to screw the sides in from the bottom. The trailer should now have a bottom and the two longer sides in place.

Front and Door

  • Next take one of the remaining pieces of plywood and place it on the end of the trailer, near the hitch. The piece will not fit in between the existing sides, so you must screw it into the outside of the trailer floor and trailer sides. Finally, using the heavy-duty hinges, attach the door to the back of the trailer. The hinges will attach to the floor of the trailer and the bottom of the door so it will swing downward. Attach the latches to the door and the side of the trailer to finish the job.


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