Quick answer: A DIY kitten playhouse from moving boxes takes under an hour: tape two sturdy boxes into an L or a two-storey stack with paper tape, cut round doorways and a window, add a corrugated scratch strip, and place it in the kitten's safe room. Skip staples, loose string and glossy printed card.
Moving leaves a stack of sturdy boxes, and a new kitten often arrives around the same time. Turning two or three of those boxes into a playhouse gives the kitten somewhere to hide, climb and pounce while it gets used to a new home.
This build needs a box cutter, paper tape and about an hour. It is designed to be safe for small kittens, easy to replace when it gets chewed, and simple enough to change as the kitten grows. For more cardboard ideas, our weekend cardboard castle build for kids and cats is a larger family project.
What a Kitten Playhouse Needs to Do
Kittens play constantly, and International Cat Care describes play as an essential part of a kitten's development. A good playhouse supports the parts of play kittens enjoy most: hiding, peeking out, pouncing and climbing a short way.
It also needs to be a retreat. A new kitten can feel overwhelmed, and a box with a small doorway gives it a place to watch the room without being seen. Those two jobs, play and refuge, shape the design.
Choosing Boxes and Materials
- Two or three double-wall moving boxes in similar sizes
- Paper tape or water-activated tape, not plastic packing tape
- A box cutter and a cutting mat or spare board
- A piece of corrugated cardboard for a scratch strip
- A soft blanket or fleece offcut for the floor
Plain brown boxes are best. Remove staples, plastic labels and any loose tape before you start. Our checklist on tape, ink and staples to avoid in cardboard projects covers what to strip off. Glossy printed boxes can shed coating when chewed, so put printed sides facing in or skip them.
Building the DIY Kitten Playhouse in Under an Hour
- Tape the flaps of each box shut to make solid cubes (10 minutes).
- Cut a round doorway about 15 cm across on one side of each box (10 minutes).
- Stand one box on top of the other, offset so the lower roof forms a ledge, and tape the seam inside and out (10 minutes).
- Cut a hole between the boxes so the kitten can climb from the lower to the upper level (10 minutes).
- Cut one or two small windows for peeking and paw play (5 minutes).
- Glue a corrugated strip to one outer wall as a scratch surface, and line the floor with fleece (10 minutes).
Round doorways are kinder on small bodies than square ones and are harder to tear at the corners. Smooth any rough edges with a strip of paper tape folded over the cut.
Keep the Climb Low for Small Kittens
Very young kittens are not yet steady climbers, so keep the playhouse to two storeys and the upper doorway no more than about 40 cm off the floor. A soft rug or blanket beside the playhouse cushions any tumbles while the kitten is learning.
As the kitten grows, you can add a third box or a ramp of folded cardboard. If you later want a sturdier build, our stud-safe kitten condo for the living room covers a wooden version.
Toys to Add and Toys to Avoid
A playhouse comes alive with a few toys pushed through the windows. Soft balls, crinkle paper and small fabric toys work well. International Cat Care advises that toys made of ribbons or string, pipe cleaners and balls of wool should be avoided.
The reason is serious. VCA Animal Hospitals explains that cats that swallow thread, string or yarn can develop a potentially life-threatening condition, because the barbs on the tongue make it hard to spit out. Do not hang toys on string inside the playhouse, and keep wand toys for supervised play only.
For safe homemade toys, see our zero-waste kitten toys from packaging.
Where to Put the Playhouse
For the first days, place it in the kitten's safe room. Cats Protection advises that when a new cat arrives, you should take the carrier straight to the safe space you have set up, and a playhouse there gives the kitten somewhere to hide that is not under the bed.
Set it against a wall in a quiet corner, away from the litter tray and food bowl, with the doorway facing into the room. Once the kitten explores the rest of the home, you can move the playhouse to a living area. Our first-week guide to bringing a new cat home covers the wider settling-in plan.
Adding a Scratch Strip That Lasts
Kittens start scratching early, and offering an approved surface from the first week helps. A corrugated strip on the outside wall of the playhouse is a good start, but cardboard wears fast. Glue a new strip over the old one as it frays.
Corrugated card with tight flutes holds up better than thin card. Our guide to the best corrugated cardboard for a kitten scratcher compares what cats prefer. Over time, add a sisal post nearby so the kitten also learns to scratch vertically at full stretch.
Variations for Different Spaces
Not every home has a free corner for a two-storey stack. In a narrow hallway or a small bedroom, lay two boxes end to end to make a tunnel with a doorway at each end and a window in the middle. Kittens enjoy running through and ambushing toys from inside, and the low profile slides under a desk.
If you have three boxes, an L-shape with one box on top at the corner gives a tunnel, a lookout and a den in one footprint. Tape the joins on both sides so the structure does not shift when the kitten jumps on the roof.
For a home with an older resident cat, consider two separate entrances so the kitten can leave if the adult cat comes in. Giving each cat a way out reduces tension during introductions and keeps the playhouse a place both can enjoy.
Cleaning and Replacing the Playhouse
Cardboard cannot be washed, so plan to replace it. Shake out the fleece liner weekly and wash it. Replace any box that is wet, heavily chewed or soiled; a fresh box takes ten minutes to swap in using the same steps.
Check the playhouse daily for loose pieces of tape or torn flaps a kitten could swallow. Kittens chew more than adult cats, so small fragments are the main risk with cardboard toys.
| Check | How often | Action |
|---|---|---|
| Loose tape or flaps | Daily | Remove or re-tape with paper tape |
| Fleece liner | Weekly | Shake out and wash |
| Scratch strip | Every 1 to 2 weeks | Glue a fresh strip over it |
| Box condition | Monthly | Replace chewed or damp boxes |
Growing Beyond the Playhouse
Once your kitten is climbing confidently and leaping onto furniture, it will want more height. That is a good time to add shelves, a cat tree or a window perch. Keep the playhouse if the cat still uses it as a hideaway; many adult cats return to their first box for naps.
For more enrichment ideas as your kitten grows, see our guide to indoor cat enrichment ideas.
Kitten Playhouse Questions
Is cardboard safe for a kitten playhouse?
Plain cardboard is generally a good material for a kitten playhouse, as long as you remove staples, plastic tape and labels, and avoid glossy printed card. Check daily for loose pieces the kitten could swallow, and replace boxes that are heavily chewed, damp or soiled rather than patching them indefinitely.
How big should the doorways be for a kitten?
A round doorway about 15 cm across suits most kittens and still works for many adult cats. Round openings are gentler on small bodies than square ones and less likely to tear at the corners. Fold a strip of paper tape over cut edges so they are smooth.
Can I hang toys inside a cardboard playhouse?
Avoid hanging toys on string, ribbon or wool. International Cat Care advises against string and ribbon toys, and swallowed string can be dangerous for cats. Push loose toys such as soft balls or crinkle paper through the windows instead, and keep wand toys for play you supervise.
Where should a new kitten's playhouse go?
Start in the kitten's safe room, in a quiet corner away from the litter tray and food bowl, with the doorway facing into the room. Once the kitten is exploring the rest of the home confidently, you can move the playhouse into a living area where the family spends time.
