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13 DIY Cat Door Plans You Can Make Today (With Pictures)

Nicole Cosgrove Profile Picture

By Nicole Cosgrove

Cat Door

Cats are naturally curious creatures. They love to adventure into the backyard. They can run, play, and even show off their masterful hunting skills. Giving them a gateway into the world awaiting them outside is a great way to allow them their freedom and avoid spending most of your day opening the backdoor. This is where a creative, DIY cat door comes into play.

A DIY cat door is a perfect addition to your home that provides your kitty with an opportunity to roam independently. Exterior cat doors open to the outside of the home so your cat can enjoy the great outdoors or even use the potty if they prefer. Interior cat doors are cute additions to the home that promote your cat’s sense of adventure when going outside isn’t an option for them. These functional doors can even be added to one of your home’s windows.

If you’re ready to get your DIY juices flowing and create a cat door for your kitty, these 15 ideas can help. Simply take a look at the plans and pictures we’ve gathered and get your creative juices flowing. Your kitty will appreciate all the fun and adventure your project provides them.

The 5 Best DIY Exterior Cat Door Ideas

Exterior cat doors open directly to the outside or onto a catio. Normally, these doors are smaller than those used by dogs to get in and out of the house. That doesn’t always need to be the case, however. When it comes to DIY cat doors, you can adjust to the sizing you need to accommodate both your kitty and your doggo if you have both living inside the same house.

1. Basic Homemade Pet Door

This basic homemade pet door is ideal for beginners in the do-it-yourself world. The opening is added to an exterior door to allow pets access outside. An insert can be used at night to keep unwanted critters at bay or on bad weather days to keep your kitty safely inside. This hard insert also works as a protectant to keep the cold out during the winter months when utility bills can rise.

2. Dual Flap Door for Pets

With this dual flap door for pets, your kitty can venture outside while the interior of your home is protected from unwanted animals who may try to sneak in for a visit. You’ll also find that this dual design is ideal for keeping the weather outside from affecting the interior of your home.

3. Insulated Cat Door

If you want your cat to have their freedom and protect your home from the elements outside, this insulated cat door is the perfect DIY project for you! Both hot and cold temperatures from the changing seasons are kept at bay thanks to the insulation added to this cat door. You’ll also sleep easier knowing outside critters won’t be paying you a visit at night.

4. Simple DIY Cat Door

If your cat is yearning to spend time outdoors, this simple DIY cat door could help. While the installation and design behind it are simple and relatively easy to do, the looks are amazing. Your kitties will thank you and visitors to your home will be amazed.

5. Screen Door Cat Entry

This screen door cat entry project is perfect for a home with kitties who peer out the screen all day in hopes of venturing outside. This project is customizable and easily adapts to your style and your home’s screen door.

The 6 Best DIY Interior Cat Door Ideas

Interior cat doors are mostly for your cat’s adventuring pleasure. These openings let your cat wander and provide access to areas of the home you may not want your pup’s having. With cats loving to climb, run, and in some instances, be alone, these doors are cute ways to give them something of their own.

6. Simple Cat Door

This simple cat door is both stylish and easy to create. The original plans use a black rim on a white door but this can be easily adjusted. With this cat door idea, you can choose the colors that best suit your home or convert the idea for exterior doors if need be.

7. DIY Cat Tunnel

If your cat loves to adventure around the house, a DIY cat tunnel could be just the thing they need. This cat tunnel doesn’t use an interior door for kitty’s access. Instead, this passage is built into the wall of your home. While it may sound difficult, this project is actually much easier than you realize.

8. Picture Perfect Passageway

With the picture-perfect passageway, both you and your cat get to show off. You can show your ability to tackle DIY projects and pick out a stylish picture frame for the finishing touches. Your kitty will feel like a winner thanks to their new ability to climb through walls while giving you the opportunity for some amazing snapshots in the process.

9. Hidden Pet Door

The hidden pet door is designed for homes featuring panel doors. Your cat can have access to any closed-off area of your home, while the door remains hidden from visitors. This project is great for all DIY levels and can easily become part of your home.

10. Hideaway Cat Door

This hideaway cat door is a great idea for kitties that need access to their litter box area. Cat owners know the pain of leaving the litter box exposed to everyone who visits their home. With this door, that problem is solved. If access to the litter box isn’t an issue, this door is versatile enough to make a great addition to any area of the home for your kitty to explore.

11. Kitty Flap

A kitty flap is a cool idea when it comes to cat doors on interior walls. Once you’ve made your cat’s passageway, your creative juices come into play. Using a tablecloth, old curtain, or any piece of material lying around the house, you can add a flap that not only hides the entry but entices your cat to pass through.

The 2 Best DIY Window Cat Door Ideas

Cats love sitting in the window and watching the world outside. While some may feel adding a cat door or passageway to either an interior or exterior door may be difficult, a window cat door is already opened to the world outside making it an easier project to take on. Here’s a look at a couple of cool ideas for adding your cat something special to their favorite window.

12. Sliding Window Cat Door

With minimal tools required, you can easily install this sliding window cat door. While you may be worried about the size of the windows in your home, don’t. This DIY project can be adjusted to meet your window needs and allow your kitty a fun exit to the outside.

13. Customized Window Door

This customized window door adds a little something extra to your cat’s favorite sliding window. Similar to the door we mentioned above, this customized addition works on sliding windows of any size but offers your kitty a ledge to sit on and enjoy a nice day outdoors.


Dogs aren’t the only pets who should get to use pet doors. If you live in an area where your cat can go outside without dangers, an exterior cat door is a great way of allowing this to happen. If that’s not your kitty’s situation, then feel free to add an interior cat door or passageway to your home. This will provide them with a way to be adventurous while giving you ways to allow your kitty into areas of the home you don’t want everyone having access to. It’s a win for both you and your feline friend.

By the way…

Are you looking for a stylish cat bed that will fit right into your decor? We recommend the Hepper Macrame Cat Bed, a hanging bed made of woven cotton, wood, and fleece. This bed is our product, and it will keep your cat cool all summer long!

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Featured Image Credit: Julie Vader, Shutterstock

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