How to Build a Tree House Ladder

Updated July 20, 2017

Tree houses provide entertainment and a place for kids and even adults to get away and have time for themselves. Tree houses should have a safe and sturdy ladder for access between it and the ground. This article walks you through instructions on building a simple, yet solid, 10-foot-long tree house ladder out of 2-by-4s using a few simple tools.

Cut eight 2-foot-long pieces of 2-by-4 with the circular saw for the steps of the ladder. Leave two pieces at 10-foot for the sides.

Sand all rough edges off the eight cut pieces and the two 10-foot pieces. Apply wood stain or paint and allow to dry. Next, apply water sealant to all ten pieces.

Lay the two 10-foot 2-by-4s on edge parallel to each other 2 foot apart. Lay a 2-foot piece on the wide edge in between them so it runs perpendicular. Place it 6 inches inward from one end of the sides. Drive 3 screws through both 10-foot sides into the ends of the 2-foot piece.

Lay another 2-foot piece on the wide edge in between the sides 6 inches inward from the other end. Drive 3 screws through both 10-foot sides into the 2-foot piece.

Equally space the remaining six 2-foot pieces between the top and bottom steps and screw them to the sides. Make sure you use 6 screws for each step, 3 on each side. Stand your ladder up.


Adjust the 10-foot measurement for the sides of the ladder to make the ladder a different length.


Be cautious when using power tools.

Things You'll Need

  • 4 to 5 10-foot-long 2-by-4s
  • Measuring tape
  • Circular saw
  • Sander
  • Wood stain or paint
  • Waterproof sealant
  • 2 1/2-inch screws
  • Screwdriver
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