How to Build a Winter Shelter for Feral Cats (A Simple DIY)

I know this isn't our usual content. But around here, we love all living beings, not just our bees. Caring for the animals around us is part of how we live at home: being mindful of our surroundings and helping the innocent creatures who can't help themselves. So today, we're talking about cats.

Beyond our pets, we help care for cats through feral colony care, rescue, and fostering. When the nights get cold and the rains start, one of the most useful things you can do for community cats is give them a warm, dry place to sleep. It doesn't take carpentry skills. Our favorite design uses two plastic storage bins, and you can build one in about an hour.

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Why Shelter Matters, Even in a Mild Climate

The Bay Area doesn't get snow, but cold rain is its own problem. A wet cat loses body heat fast, and a damp night in the 40s can be hard on older cats, kittens, and cats who are already sick. A shelter that stays dry inside is often more important than one that's extra warm.

What You'll Need

• A large plastic storage tote with a lid (around 30 gallons)
• A smaller tote that fits inside it with a few inches to spare on every side, or a sheet of rigid foam insulation board
• Straw (not hay) from a feed or garden store
• A sharp utility knife and a marker
• Optional: a pallet, bricks, or a few boards to raise it off the ground

Step-by-Step

1. Mark the door. On one short side of the large tote, draw a roughly 6-inch circle or square. Place it a few inches up from the bottom so rain and straw don't spill out. Six inches is big enough for a cat but small enough to keep out larger animals and hold in warmth.
2. Cut the door. Carefully cut it out with the utility knife. Go slowly; plastic can crack.
3. Insulate. Set the smaller tote inside the larger one and cut a matching door through both. Or cut foam board to line the floor and walls of the large tote, leaving the door open. Either way, you're creating a layer of insulation between the cat and the cold.
4. Add straw. Fill the inner space loosely with straw, about halfway. Cats will burrow into it and shape a nest.
5. Close it up. Add a piece of foam on top of the inner space and snap on the lid. A brick on top keeps the wind from moving it.

Why Straw, Not Blankets

This is the most important tip in the whole post. Blankets, towels, and hay soak up moisture and stay damp, which pulls heat away from a cat's body and can even freeze. Straw is made of hollow, dry stalks that repel moisture and let cats burrow in and stay warm. Fluff or replace the straw every month or so, or whenever it gets wet or dirty.

Placement Tips

• Raise it up. Setting the shelter on a pallet or bricks keeps it off cold, wet ground.
• Face the door away from the wind, or toward a wall with just enough space for a cat to slip in.
• Keep it quiet. Choose a spot away from foot traffic, dogs, and busy driveways.
• Be a good neighbor. Place shelters on your own property, or ask permission first.
• Disguise it if you like. A tarp, some branches, or a coat of outdoor paint helps it blend in.

Food and Water

Don't put food inside the shelter; it attracts wildlife and other animals that may move in. Set up a covered feeding station nearby instead. Cats need extra calories to stay warm in winter, and they need fresh water every day. A heated outdoor water bowl helps on the coldest nights if you have a safe outdoor outlet.

The Bigger Picture: TNR

Shelter keeps cats safe this winter. Trap-Neuter-Return (TNR) keeps colonies healthy and stable for the long run. If you're feeding community cats, contact your local shelter or a feral cat group about low-cost spay and neuter programs. Many will lend you humane traps and walk you through the process.

For the Cats Who Come Inside

Sometimes a colony cat, a stray kitten, or a foster ends up indoors for a while, whether to recover after a spay or neuter, to wait out a storm, or on the way to a forever home. A quiet, cozy foster space helps them settle in. A few things that make it easier:

• Somewhere warm to curl up. A heated cat bed with a timer is a comfort for older cats and thin cats on chilly nights (indoors only, never in an outdoor shelter).
• Somewhere to hide. Shy and feral cats feel safest when they can tuck away out of sight. A covered cat cave bed or a plush cat tunnel bed gives them a hideout and a place to play once they're ready.
• Fresh, moving water. Many cats drink more from running water. A stainless steel cat water fountain is easy to clean between foster cats.
• Easy-to-clean dishes. Stainless steel holds up to frequent washing. We like a raised stainless food and water set for small spaces.
• A litter setup that keeps the mess contained. A litter-trapping mat catches what comes out on little paws.
• Something to scratch. A cardboard cat scratcher is inexpensive and easy to replace.
• Gentle grooming. Cats coming in from outside often have mats and loose fur. A two-sided undercoat rake helps, once they trust you enough to be handled. Go slowly.

Have pets inside, too? Read Can Pets Have Honey? What Cat and Dog Owners Should Know.