Chicken coops, sized by how many hens you actually have

The number that decides everything

There is one figure you need before you look at a single coop, and almost no listing gives it to you honestly. Penn State Extension puts a large chicken at 2 sq ft of coop floor and 10 sq ft of outside run, with laying hens of lighter breeds at 1.5 sq ft inside and 8 sq ft out. So six hens want roughly 12 sq ft of interior floor and 60 sq ft of run.

Now compare that with the market. A coop advertised as fitting six chickens routinely provides six or seven square feet of interior floor — enough that six hens physically fit on it overnight, which is what the manufacturer measured, and not enough to keep them healthy. The gap is roughly a factor of two, consistently, across brands and price points.

That is not a conspiracy, it is a measuring convention. But it means the single most valuable thing you can do before buying a coop is multiply its stated interior dimensions and divide by two. If the listing does not publish interior dimensions at all — and a large share do not — treat the capacity as unverified. Our spec tables say "Not published by manufacturer" rather than filling in a number we invented.

Why crowding is the problem, not just a shame

An undersized coop is not simply less pleasant. Crowded birds pick each other's feathers, and once feather-pecking starts in a flock it is genuinely hard to stop. They bully, so the lowest-ranked bird gets less feed and water. They lay on the floor rather than queueing for a box, which produces dirty and broken eggs. And the same volume of air carries twice the moisture and droppings, which means ammonia, which means respiratory irritation.

Almost every mysterious husbandry problem a first-time keeper writes about online resolves, on inspection, to a coop that was too small. It is the root cause hiding behind a lot of other symptoms.

Work out your size

What to buy first: wood, plastic or metal

Wood

Cheapest, warmest, and trivially easy to modify — adding a vent, a better latch or hardware cloth to a wooden coop is a Saturday job. It also rots, needs resealing, and its seams and end grain are exactly where red mite breeds. A good first coop, provided you accept the maintenance.

Plastic

Several times the price and worth it for one specific reason: there is nowhere for mites to live, and the whole coop hoses out in minutes. Plastic coops also hold resale value in a way wooden ones do not. The Omlet Eglu and the Formex SnapLock are the two names you will keep meeting.

Metal

Mostly sold as walk-in runs rather than houses. Galvanized frames do not rot, and the better ones ship with hardware cloth rather than hexagonal netting — which is worth searching listings for, because it is the difference between a run that stops a raccoon and one that does not. A compact secure house inside a large metal run is often the best value at eight birds and above.

The three upgrades nearly every coop needs

1. Hardware cloth. Budget coops ship with hexagonal chicken wire, which contains chickens and does not stop predators. Extension's predator guidance notes that chicken wire's openings let ground predators reach in, and that least weasels can get through quarter-inch holes. Half-inch hardware cloth on everything within reach.
2. A two-step latch. Raccoons open hook-and-eye catches routinely. A self-locking gravity latch costs less than a bag of feed.
3. Ventilation above head height. Nearly every budget coop is under-ventilated, and the mistake people make in November is sealing it further. Moisture, not cold, causes frostbite.

What we have not done

We have not assembled and lived with every coop in this section. The rankings come from published dimensions, materials, construction detail and the pattern of what verified owners report at the retailer — and every page says which of those it is relying on. How we pick sets out the method and its limits plainly, because the limits matter as much as the method.