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Crate vs playpen for an apartment dog — which one a small home can live with
By Chris Y. · One dog, one apartment, a tape measure and a chest girth chart
Photo: rawpixel (CC0 1.0)
Buy the crate. In an apartment a crate takes about four square feet and folds to a few inches thick, while a 16-square-foot pen takes a quarter of a small bedroom and has nowhere to go when it is not in use — and for the job most people are actually buying for, which is a dog that settles while you are out, the crate is also the better tool.
The pen wins in exactly two situations, and they are worth knowing before you spend. A puppy under about four months cannot hold a bladder through a workday, so a pen with a defined toilet area is kinder than a crate it has to soil. And a dog recovering from surgery under restricted-movement instructions often needs somewhere to be awake rather than somewhere to sleep.
Everything else is arithmetic. Below are the two products this comparison actually comes down to: the best-documented crate on the market and the pen most people end up with, compared on the figures their makers publish.
How to shop for a crate or a playpen
Floor area, with the door open
A 36-inch crate is about 5.75 square feet and a hinged door adds roughly two more feet of clear space in front of it. MidWest's 16 square feet of play area is not a marketing figure — it is the pen's actual claim on the room, and it cannot be reduced.
What it does when you want the room back
Both fold. A wire crate goes flat to a few inches and slides behind furniture; an accordion pen folds to a bundle of panels that is long, heavy and awkward. In a one-bedroom this is the difference that decides it.
Height, and whether the dog can leave
A crate is closed. A pen is a wall, and a wall has a height — MidWest sells the same pen from 18 to 48 inches for exactly this reason. A determined 30 lb dog will clear a 24-inch pen from standing.
Which one the dog settles in
Crate training works because a closed den asks for sleep. A pen asks for wakefulness, which is right for a puppy learning to be alone and wrong for a dog you want quiet in a building with neighbors.
Best for most apartments
Image: Diggs
Diggs Evolv Dog Crate
Four square feet, and it collapses
Model
Evolv Medium; five sizes Small to Extra Large
Footprint
31.7 × 21.4
Height
22.2 in
Folds
Flat
Reasons to buy
About 4.7 square feet of floor at the Medium, against the pen's 16, in a room where every square foot is counted
Converts to an open pen and then collapses flat, so it can be both answers on different days and neither on a Saturday
Diggs publishes exterior inches, crate weight and a dog-weight band for all five sizes, which is more than any pen maker publishes about anything
Diamond-shaped mesh and nylon-coated steel, which Diggs says is designed to protect paws and jaws from injuries associated with wire crates
Reasons to avoid
Several times the price of a pen or a plain wire crate
A 22-inch interior height is a ceiling a big dog will notice; the pen has none at all
A closed crate is the wrong tool for a puppy that cannot hold on for eight hours
The crate wins this comparison on floor area and on storage, and the Evolv wins among crates because it is the one that converts and collapses. That is the apartment answer twice over — small when it is up, gone when it is down.
The case against it is a puppy's bladder and a vet's restricted-movement instruction, and both are real. Neither is permanent, which is why most households that buy a pen first end up with a crate second.
Not the right fit if you have a puppy under four months alone for a full workday — read the pen row below.
Sixteen square feet, six heights, nowhere to put it
Model
Exercise Pen, 48-inch, single door; six heights from 18 to 48 in
Footprint
16 sq ft
Height
48 in
Folds
Accordion
Reasons to buy
Sixteen square feet of enclosed space, enough for a bed at one end and a toilet pad at the other, which is the whole argument for a pen with a young puppy
Six heights from 18 to 48 inches, so the wall can actually be taller than the dog can clear
Sets up and folds without tools, and ground anchors are included for use in a yard
Cheaper than every crate on this site except the plain wire iCrate, and a no-door version exists for a dog that has learned to work a latch
Reasons to avoid
Sixteen square feet is a quarter of a small bedroom, permanently, and a folded pen is a long heavy bundle with no natural home
MidWest publishes the heights and the play area and nothing else — no panel width, no folded dimensions, no weight
It is open at the top; a 24-inch or 30-inch pen is a suggestion to an athletic dog
The pen is the right purchase for a specific stretch of time. A ten-week-old puppy left for six hours needs room to be away from its own mess, and a dog on crate rest after an operation needs somewhere to be awake that is not the whole flat.
Not the right fit if the dog is an adult that settles when left — the crate takes a quarter of the floor.
Footprints, heights and play areas are quoted from each maker's own published page or retail page, read on September 12, 2026, with sources linked below. The crate's 4.7 square feet is calculated from Diggs' published 31.7 by 21.4 inch exterior; MidWest's 16 square feet is the maker's own published figure for the pen.
Both retail links were opened and checked for a live buy box on the same date.
The verdict
For most apartment dogs: the crate. The Diggs Evolv Medium takes about 4.7 square feet where the pen takes 16, folds flat when the floor is needed, and converts to an open pen on the days that is the better answer.
For a puppy under about four months alone for a workday, or a dog on veterinary movement restriction: the pen, and the 48-inch height rather than the 24. Expect it to be a purchase for a season rather than for the dog's life, and think about where it goes when it is folded before you buy it.
Yes, and for a puppy it is the standard arrangement — the crate stands open inside the pen as the bed, and the rest of the pen is the toilet and play area. It takes the full 16 square feet, so it is a temporary layout in a small home rather than a permanent one.
How tall does a pen need to be?
Taller than the dog can clear from standing, which for a medium adult dog means 42 or 48 inches rather than 24. MidWest sells six heights for that reason, and the shorter ones are for puppies and small breeds.
Is a crate cruel for a full workday?
A crate is for sleeping and short absences, not for eight hours as a routine. Adult dogs that are properly crate trained sleep through most of a workday; puppies cannot, which is the real reason to own a pen for a few months.
What do I do with the pen afterwards?
This is the question worth asking before buying. A 48-inch pen folds to a long bundle of panels with no obvious home in a flat, and MidWest does not publish a folded dimension. A wire crate folds to a few inches and goes behind a wardrobe.
Also considered
Fabric playpens — Light, packable and no obstacle to a dog that wants out. Fine for a settled dog at a campsite; useless for the containment job a pen is bought to do.
