Emily ParkerBy Emily Parker

Updated November 2026

A cat tree do it yourself project is one of the most rewarding ways to give your cat vertical space, scratching surfaces and a safe place to nap. In this guide you will plan the height and layout, gather the right materials, build a base that won’t tip, and wrap the posts and platforms so they hold up to claws. Most owners can finish a basic two-level tree in a weekend with ordinary hand tools.

Plan the Height, Footprint and Layout First

Start by measuring your cat’s reach and your floor space. Many owners aim for a total height of about 4 to 5 feet for an average adult cat, though larger or more athletic cats may need more. A base footprint of at least 16 by 16 inches gives you a stable platform, and 20 inches square is safer for taller towers. Sketch the levels on paper, marking where each platform, perch and scratching post will sit. Leave a gap of roughly 12 to 15 inches between platforms so your cat can jump comfortably.

Shopping for one? See our guide: 6 Best Cat Trees for Bigger Cats (2026).

Gather Materials and Build the Base

A solid base is what keeps the whole tree from wobbling. Use at least ¾-inch plywood or MDF for the base and platforms, and 4 by 4 or 2 by 4 lumber for the support posts. Wrap each post in sisal rope before attaching it, and staple the rope tightly so it does not loosen under pressure.

  1. Cut the base and top platform to your planned size.
  2. Fasten the posts to the base with wood glue and 2½-inch wood screws, driving them in from below through pilot holes.
  3. Add cross braces between posts, or a second base plate, to stop side-to-side rocking.
  4. Check that the frame sits flat on the floor before adding any platforms.

Add Platforms, Perches and Scratching Surfaces

Attach each platform with screws driven up through the support posts or through corner brackets. Cover the platforms with carpet, fleece or sisal fabric, and staple the covering on the underside where it will not be seen. Scratching posts should be the sturdiest part of the tree, so mount them to the base and to a secondary brace.

Test Stability Before Your Cat Uses It

Push firmly on each platform and post with your full body weight. Anything that flexes, creaks or lifts off the floor needs more bracing. Re-tighten screws after the first week, because wood can settle as it dries.

Common Mistakes to Avoid

  • Using thin plywood or particleboard that cracks under a cat’s jump.
  • Leaving sharp screw tips exposed on platforms or posts.
  • Wrapping posts loosely, which lets the rope slide and bunch up.
  • Building the tree too tall for the base, causing it to tip when your cat leaps.
  • Skipping the stability test and assuming a freshly built tree is safe.
  • Cordless drill with a driver bit set: makes driving screws into thick plywood much faster and more even. View on Amazon
  • Sisal rope for cat scratching posts: a natural fiber that resists tearing and holds up well to claws. View on Amazon
  • Staple gun with upholstery staples: secures carpet and fabric neatly to the underside of platforms. View on Amazon

If you are still deciding on a finished design, How to Choose a Cat Tree: Height, Stability and Size covers the sizing details in more depth, and Where to Put a Cat Tree for Safety and Activity helps you pick the best spot in your home.

FAQ

How much wood do I need for a basic cat tree?

A simple two-level tree usually needs one or two sheets of plywood, several lengths of 4 by 4 lumber, and enough sisal rope to wrap each post. Measure your plan carefully before buying to avoid waste.

Can I build a cat tree without power tools?

You can, using a hand drill and wood screws, but pilot holes and careful measuring become more important. Power tools make the work faster and the joints more secure.

Is a homemade cat tree safe for kittens?

It can be, provided the base is wide, the platforms are firmly attached and there are no exposed screws or loose staples. Kittens should be supervised on any new structure, and a veterinarian can advise on safe play for young cats.

Conclusion

A cat tree do it yourself build comes down to good planning, solid materials and a stable base. Test every platform and post before your cat climbs on, and check the screws regularly. With a little patience, you can give your cat a tree that is safer and sturdier than many store-bought options.

Ready to choose one?

Emily Parker

About Emily Parker

Emily Parker is part of our editorial team and reviews and edits our cats guides, checking product details against manufacturer specifications and owner feedback.