Interior House Size
35 x 31 in
Interior Height
28 in
Door
12 x 20 in
Recommended Interior
35 x 31 x 28
inches
Door Opening
12 x 20 in
Raised Floor
2 in
Insulation
Optional
Bedding Volume
1.25 cu ft
Inputs
Result
This is a practical range for a dog around the size of a lab mix, border collie, or similar build.
Inputs
Result
Smaller dogs lose body heat faster, so a snug house with raised floor and insulation is important in cold climates. The smaller door keeps wind out.
A dog house should be large enough for the dog to stand, turn, and lie down comfortably, but not so oversized that it loses warmth in cold weather. Interior dimensions are usually based on body length and shoulder height.
The core size stays tied to the dog, but climate changes how you build around that size. Cold climates favor better insulation and more floor lift, while hot climates need better airflow and shade.
The door opening should be about 75 to 80 percent of your dog shoulder height. Making the door shorter than full standing height helps block wind and rain from entering the shelter while still allowing easy entry and exit.
Yes, raising the floor 2 to 4 inches off the ground prevents moisture from wicking into bedding, improves air circulation underneath, and keeps the interior warmer in cold weather by avoiding direct contact with frozen or wet ground.
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Last Updated: Mar 11, 2026
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