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Large catio attached to the side of a house

Whether you have an indoor or outdoor cat, you can provide many benefits for your feline friend, including safety, enrichment, fresh air and the stimulation of nature, by building a catio. Catios are cat enclosures or “cat patios” that provide peace of mind knowing your cat is always safe outdoors while protecting birds and wildlife.

If you want to build one yourself, or you’re not sure where to begin, here are some tips to help you get started:

Window Box Type Catio with Window Access



There are several factors to consider when choosing a location for your catio. Prior to building your cat enclosure, consider the following:

  • Cat Access: The ideal location for a catio is near an exterior window or door with easy access for your cat to enter directly into a catio. Cat doors, available in a variety of sizes and styles, can be installed in a window, door or a wall. If you prefer a catio located further away from your home, consider a cat tunnel or carrying your cat to the catio.
  • Size: Evaluate how much outdoor space you have available and how many cats will use the catio. Cats love vertical space so you can maximize a small area by adding several vertical shelves and perches. If space is limited, a window box catio is a great option. If you want to enjoy the catio too, a 6’x8’ or 8’x10’ size catio will allow space for seating and bonding with your cat. After all, nature is good for humans too!
  • Level Foundation: Build your catio on a flat, level foundation to insure a successful project. Uneven ground can be leveled or you can build your catio on a patio or deck. Above-ground window box catios can be supported by angle braces that attach to the house.
  • Sun/Shade:  Cats love basking in the sun so a location that offers both sun and shade is ideal. Always provide shade for your cat such as shade cloth, a bench or cat shelter while outdoors.
  • Stimulating Views: Cats need stimulation on a daily basis. A catio location with views of a garden, wildlife and family activities will provide endless enrichment for your cat while enjoying fresh air.

Two cats enjoying a perch in their catio



Materials for building a catio are available from your local home improvement or lumber store. Typical materials include wood framing lumber, escape-proof wire, cedar shelves and roof options such as wire mesh or polycarbonate material so your cat can enjoy a catio all year long. To insure an escape-proof outdoor space, consider the following:

  • Wire: To insure your cat’s safety and the durability of a catio, 16 gauge, galvanized welded wire (fencing wire) is recommended and available in a variety of sizes including 2”x3” or smaller. Other options include vinyl-coated wire in green and black colors. Wire can be attached to your wood framing using a staple gun.
  • Floor: If you build a catio on a deck or patio, your floor surface already exists. For catios built on the ground, consider existing grass or add bricks, pavers or decking material. These materials will help avoid tracking dirt or muddy paws into your home.
  • Cedar shelves: Tight-knot cedar is a good choice for creating shelves for vertical and horizontal movement in the catio. Corner perches, ideal for lounging and catnaps, can be constructed using ¾” exterior grade plywood and covered in outdoor carpet.
  • Roof: A wire mesh or a clear, polycarbonate covered roof will insure your cat is contained and protected.

Accessories can provide enrichment in your catio



One of the joys of a catio is enrichment for your cat. Once you’ve built your catio, a variety of accessories and décor can enhance the outdoor experience including:

  • Cat Toys and Cat Scratchers: Add your cat’s favorite toys, a cat scratcher, tunnel tube or other enrichment for your cat’s enjoyment.
  • Cat Safe Plants: To keep your cat healthy, avoid using plants that are toxic to cats.   Several safe plant choices include wheat grass, catnip, basil, nasturtiums, pansies or grass planted in a pot.
  • Water Bowl or Fountain: Always have a bowl of fresh water available for your cat in a catio or consider a water fountain. (Avoid food that can attract rodents or unwanted critters.)
  • Litter Box: An outdoor litter box (in addition to your indoor box) can help reduce indoor odors and provide a convenient location for your cat’s needs while outdoors.
  • Decorate! Have fun decorating your catio with rugs, seating, garden art and more. There are endless ways to customize your catio to suit your style and your feline’s fancy!


4 different catio plans for a window, patio, deck or gardenA DIY catio plan can be the easiest way to build a catio and to get it right the first time.

As the founder of Catio Spaces, we’ve been building custom catios for cat guardians for several years and while each catio is designed for a specific location, I’ve found that a few styles work well for most homes.

I’m passionate about catios and want to help every cat have a catio of their own. That’s why I made my most popular catio designs available to take the guesswork out of building one. Our DIY catio plans are designed to be built as panels (for ease of assembly) and best of all, you don’t need to be an experienced carpenter!

What Kind of Catio Should I Get?


Catio Spaces offers a variety of DIY catio plans for a window, patio, deck, garden or yard.

  • If your space is limited, consider our compact Window Box™ or Haven™ catio plans.
  • For a catio you can enjoy too, the Sanctuary™ and Oasis™ plans are a purrfect choice with space for human seating.
  • If you want to locate the cat enclosure away from your home, the Oasis™ includes instructions for building a catwalk tunnel that connects your home for 24/7 cat access.

A DIY Catio Plan for every location and cat prefrenceWhat’s included in a DIY Catio plan?


Plans are downloaded as a PDF so you can get started right away!   Each catio plan includes:

  • Step-by-step instructions including diagrams.
  • Materials list (available at your local home improvement or lumber store)
  • Tool list
  • Panels are designed for ease of assembly (or removal if you move in the future.)
  • Instructions for installing a wire mesh roof or a clear, polycarbonate weatherproof roof.
  • Door placement options for human access into the catio.
  • Shelf designs to maximize vertical space for cat exercise and enjoyment.
  • Adjustable catio height. (Adjustable width for window box catio plans.)

PLUS BONUS information including:

  • Tips for acclimating your cat to a cat door and new catio space.
  • Tips for cat safe plants, enrichment, decorating and more!

It’s easy to build a catio! Whether your catio is small and simple or large and luxurious, you’ll enjoy peace of mind knowing your cat is always in a safe environment while enjoying the outdoors. And your cat will give you a “paws up” for building it!

Life is good in a catio!

It's easy to build a catio with DIY Plans
How Two Door-Dashing Cat’s Families Found Peace with a Catio
Cynthia Chomos Cynthia Chomos is a Feng Shui Consultant, Catio Designer and the Founder of Catio Spaces, creating harmonious indoor and outdoor spaces for her 4-legged and 2-legged clients. She lives in Seattle with her adorable tabby Serena (who has four catios) and is the inspiration for Catio Spaces. Cynthia offers free catio tips, DIY Catio Plans and custom catios to keep cats safe and protect birds and wildlife. You can contact Cynthia at

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