How to judge any chicken coop before you buy

Most coops look fine in a product photo. The problems show up after the first rainy month or the first raccoon visit. This guide gives you a way to size and judge any coop yourself, so you are not relying on a listing that may change next week.

Start with the space math

For standard-size hens, plan on about 4 square feet of floor inside the coop per bird and about 10 square feet per bird in the run. Bantams can get by with roughly half of that. Give each standard hen 8 to 10 inches of roost bar, and plan one nest box for every 4 to 5 hens. If a coop claims to hold 8 chickens but has 12 square feet of floor, it really holds 3. Run the numbers for your flock with the run size calculator before you shop.

What a good coop has in common

• Solid framing that does not flex when you push on a corner.
• A roof that sheds water and overhangs the walls.
• Vents high up near the roof line, above where the birds sleep.
• A door or panel big enough for you to reach every corner when you clean.
• Roosts set higher than the nest boxes, so hens do not sleep in the boxes.

Thin, soft wood, gaps you can fit a finger through, and tiny doors are the usual signs of a coop that will not last.

Predator-proofing and airflow

Chicken wire keeps chickens in. It does not keep raccoons, dogs or weasels out. Swap or cover openings with 1/2 inch hardware cloth, fasten it with screws and washers, and add an apron of wire around the base so diggers hit wire instead of dirt. Use latches that take two steps to open, since raccoons can work a simple hook. For airflow, a common rule of thumb is about 1 square foot of vent per 10 square feet of floor, and the ventilation calculator can check your setup.

What coops cost

Prices move around a lot, so treat these as broad ranges. Small prefab kits often run from about $150 to $500. Sturdier prefab coops for a medium flock tend to land somewhere between $500 and $2,000. Walk-in and shed-style coops can go well past that. Building your own can cost less or more depending on what lumber costs near you and how much you upgrade.

Build or buy?

Buying saves time. Building gets you exactly the size you need and usually better materials for the money. If you are leaning toward building, the coop planner will lay out a plan sized for your flock.

Common questions about choosing a chicken coop

How many chickens can a coop really hold?

Divide the inside floor area by 4 for standard hens. That number is usually lower than the one on the box, and it assumes the birds also have a run.

Is a raised coop better?

A coop raised off the ground stays drier and gives birds shade underneath. It also stops rats from nesting under the floor. Just make sure the ramp and door are easy for you to reach.

Do I need to insulate a coop?

In most places, good ventilation matters more than insulation. Chickens handle cold well when they stay dry and out of drafts. Damp, stale air is what causes frostbite and breathing problems.