Insulated DIY Dog Houses: 14 Cozy Builds That Keep Pups Warm All Winter

Insulated DIY dog houses can turn a cold, windy yard into a warm little hideaway your pup will actually want to use. When temperatures drop, a plain wooden box is not enough, but a few simple upgrades like foam board walls, a raised floor and a door flap make a huge difference. Searches for insulated dog house plans have jumped this fall, and it is easy to see why. Most of these builds use scrap wood, leftover shingles and things already sitting in the garage, so they cost far less than a store bought kennel. Best of all, you do not need any heaters or cords to keep your dog cozy. Here are smart, safe ideas for every size of dog and every skill level..

Insulated DIY Dog Houses Start With a Cozy Plan

Every warm dog house starts with the same simple ideas: keep the wind out, keep the floor dry and trap your dog’s own body heat inside. This cedar house checks every box with a shingled roof, a raised base, a flap over the door and a thick bed of straw. It looks like a lot of work, but it is really just a box with a few smart upgrades. Sketch your plan before you buy anything and measure your dog first. Ready to build something your pup will love..

You will need: Plywood or cedar boards, 2×2 framing, foam board insulation, shingles, screws, a door flap and straw for bedding.

How to make it: 1. Measure your dog standing and lying down. 2. Sketch a box a little bigger than your dog with a sloped roof. 3. Plan where the insulation, door and floor will go before cutting anything.

Foam Board Walls for Insulated DIY Dog Houses

The biggest upgrade is hidden inside the walls. Build a simple frame, cut rigid foam board to fit snugly between the studs, then cover it with a second layer of plywood on the inside. Your dog never touches the foam, and the walls hold warmth a bit like a cooler. This is the secret behind most insulated DIY dog houses, and it works in the floor and roof too. Ask an adult to handle the saw and wear safety glasses. Would you insulate the roof as well?

You will need: Rigid foam board, plywood for the inner and outer walls, 2×2 lumber, a saw (adult use), construction adhesive and screws.

How to make it: 1. Frame the walls with 2×2 lumber. 2. Cut foam board to fit tightly between the studs. 3. Cover both sides with plywood so no foam is exposed.

Insulated DIY Dog Houses Need a Raised Floor

Cold creeps up from frozen ground, so lifting the floor even a few inches helps a lot. Set the house on 2×4 runners or a small deck so air flows underneath and melting snow drains away. A dry floor means a dry dog, and a dry dog stays much warmer. Raised floors also keep the wood from rotting over the winter. Use untreated lumber anywhere your dog might chew, since treated wood is not safe to gnaw on. How high would you lift yours?

You will need: Untreated 2×4 boards, exterior screws, a drill (adult use) and a level.

How to make it: 1. Cut two or three 2×4 runners the length of the house. 2. Screw them to the underside of the floor. 3. Set the house on level ground and check that it does not rock.

A Rubber Flap Door That Blocks the Wind

An open doorway lets warm air rush right out. A flap made from strips of an old rubber floor mat blocks the wind, yet your dog can push straight through. Cut the mat into vertical strips so it swings easily, then screw a wooden strip across the top. Most dogs figure it out in a day, especially with a treat waiting inside. Some owners also move the door to one side so the bed sits out of the draft. Would your dog be brave enough to push through?

You will need: An old rubber mat or heavy vinyl, a utility knife (adult use), a wood strip and screws.

How to make it: 1. Cut the mat a little bigger than the doorway. 2. Slice it into vertical strips, leaving the top band whole. 3. Screw the top band above the door with the wood strip.

Reflective Foil Inside the Walls

Reflective foil insulation bounces your dog’s body heat back toward them. It comes in rolls that look like silver bubble wrap and staples easily to the inside of the frame. Cover it with thin plywood or paneling so curious teeth cannot reach it. Paired with foam board, it makes even a small house feel snug fast. It is light, cheap and easy to cut with scissors, which makes it a favorite for first time builders. Would you line the roof as well as the walls?

You will need: Reflective foil insulation, a staple gun (adult use), scissors, thin plywood or paneling and foil tape.

How to make it: 1. Staple foil to the inside of the studs, shiny side in. 2. Seal the seams with foil tape. 3. Cover everything with thin plywood so it stays out of reach.

Straw Bales as a Windbreak

Sometimes the easiest fix is outside the house. Stack a few straw bales in an L shape on the windy side to block icy gusts. Straw also makes great bedding for outdoor dog houses because it stays dry and fluffy, while blankets and hay can soak up moisture and freeze. Change the bedding often so it stays clean. A bale or two costs very little at farm stores in the fall. Which side of your yard gets the most wind?

You will need: Two to four straw bales, a few stakes or bricks and fresh straw for bedding.

How to make it: 1. Find the windy side of the house. 2. Stack the bales in an L shape a little away from the door. 3. Fill the house with loose straw and refresh it often.

Tote Shelter: Insulated DIY Dog Houses for Small Dogs

Small dogs need a smaller space so their body heat can warm it. Two big plastic storage totes, one inside the other, make a great shelter. Cut a doorway through both, slide foam board into the gap and fill the inside with straw. It is light, waterproof and easy to move to a covered porch. Many people build these for outdoor cats too, so see our DIY cat shelters for more ideas. Is your pup small enough for a tote house?

You will need: Two storage totes of different sizes, foam board, a utility knife (adult use), duct tape and straw.

How to make it: 1. Set the smaller tote inside the larger one with foam board between them. 2. Have an adult cut a matching doorway through both. 3. Tape the door edges smooth and fill with straw.

Turn an Old Cabinet Into a Dog House

An old base cabinet from a kitchen remodel already has walls, a floor and a solid top. Turn it on its side, cut an opening in the door panel and add a small sloped roof. A fresh coat of exterior paint makes it look custom made. This one works best on a covered porch where it stays out of rain and snow. Sand any sharp edges and take off old hardware first. Do you have an old cabinet waiting in the garage?

You will need: An old wooden cabinet, a jigsaw (adult use), plywood for the roof, exterior paint, sandpaper and a cushion.

How to make it: 1. Remove the hardware and sand any rough spots. 2. Have an adult cut a doorway into the door panel. 3. Add a sloped roof, paint it and let it dry before adding bedding.

Add a Little Porch and Awning

Dogs love to lie outside their house and watch the yard. A small deck in front gives them a dry spot off the snow, and a fabric or wood awning keeps sleet off the doorway. It also turns a plain box into something that looks like a tiny cottage. Paint the house to match your home and the whole yard looks put together. It is a fun weekend upgrade for insulated DIY dog houses you have already built. Is your dog a front porch watcher?

You will need: Scrap decking boards, outdoor fabric or plywood for the awning, small brackets, screws and exterior paint.

How to make it: 1. Build a small deck frame and attach it to the front of the house. 2. Add an awning on brackets above the door. 3. Paint and seal everything before winter.

Hang a Hand Painted Sign

Every dog deserves a name on the door. A small wood slice or scrap board painted with a paw print, a heart or your pup’s name adds so much charm. Use outdoor paint and a clear sealer so it lasts through the snow. Kids love helping with this part, and it makes a sweet photo once your dog moves in. You could even make matching signs for the food and toy bins. What would your sign say?

You will need: A small board or wood slice, outdoor acrylic paint, brushes, clear outdoor sealer and two small screws.

How to make it: 1. Sand the board smooth. 2. Paint the design and let it dry. 3. Seal it and screw it above the door.

A Sloped Roof Sheds Snow

Flat roofs collect snow, which melts and leaks or adds heavy weight. A sloped or peaked roof lets snow slide off on its own, like on this little blue pet house. Cover it with leftover asphalt shingles or roll roofing and add a small overhang so drips land away from the door. A hinged roof also makes cleaning and changing straw much easier. Well built insulated DIY dog houses almost always have a slope. Will you go with a peak or a single slope?

You will need: Plywood, leftover shingles or roll roofing, roofing nails, a hammer and two hinges (optional).

How to make it: 1. Cut the roof panels with a slope of at least a few inches. 2. Nail shingles from the bottom edge up. 3. Add hinges on one side if you want easy access.

Pick the Right Spot in the Yard

Where you put the house matters as much as how you build it. Choose a spot near the home or a fence that blocks the wind, and turn the door away from the strongest gusts. Avoid low spots where melting snow collects. Morning sun is a bonus because it warms the walls early in the day. Keep it close enough that you can check on your dog easily. Where is the most sheltered corner in your yard?

You will need: A compass app on your phone, a few pavers or a level gravel pad and a shovel.

How to make it: 1. Watch which way the wind blows on a cold day. 2. Set pavers or gravel where the house will sit. 3. Place the house with the door facing away from the wind.

Size Insulated DIY Dog Houses Right for Your Dog

Bigger is not better in winter. A house that is too large is hard for your dog to warm with body heat alone. It should be just big enough to stand, turn around and lie down comfortably. Measure your dog from nose to tail and from the floor to the top of the head, then add a few inches. The doorway only needs to be tall enough to walk through. Have you measured your pup yet?

You will need: A soft tape measure, a notebook, treats to keep your dog still and a helper.

How to make it: 1. Measure from the nose to the base of the tail and from the floor to the top of the head. 2. Add a few inches to each for the inside size. 3. Make the door about three quarters of your dog’s shoulder height.

Know When to Bring Them Inside

Even the best insulated house has limits. Puppies, senior dogs, small breeds and short coated dogs feel the cold much faster. The ASPCA shares cold weather tips for keeping pets safe, and the simplest one is to bring them inside when it gets bitter. Check bedding daily, make sure water has not frozen, and never add space heaters or heat lamps to a dog house. A warm house is a backup, not a replacement for your home. How does your dog tell you it is cold?

You will need: Fresh straw, a water bowl you can check daily and a warm spot inside your home.

How to make it: 1. Check the house and water bowl every day. 2. Swap damp straw for dry straw. 3. Bring your dog inside on freezing nights and during storms.