How to Build a DIY Cat Tree or Tower

Build the base

• Cut 2x4s into:
  • Two pieces four feet long.
  • Six pieces 21 inches long.
• Arrange two four-foot pieces and two 21-inch pieces into a rectangle.
  • Place 21-inch pieces inside the longer ones.
  • Perimeter should be two feet by four feet.

• Add a 21-inch 2×4 crosspiece in the middle.
• Square up corners and screw or nail base together.