How to Choose a Chicken Coop (UK Guide): Size, Space & Ventilation

A good coop keeps your hens safe, dry and healthy, and makes your daily routine quick and pleasant. Here's what to look for before you buy.

1. Work out how many hens you'll really keep

Most keepers start with three or four hens and quickly want more (it's known as "chicken maths"). Buy a coop for the flock you expect to have in a year, not the flock you're starting with.

Perch space: allow 25–30cm per large hen, 20cm per bantam.
Floor space: about 0.3m² per large hen inside the house.
Nest boxes: one for every three or four hens.

2. Ventilation without draughts

Hens produce a surprising amount of moisture overnight. Vents should sit above the perches so stale air escapes without a cold draught blowing over roosting birds. Poor ventilation is the most common cause of respiratory problems in backyard flocks.

3. Make cleaning easy

You'll clean the coop weekly, so look for a slide-out droppings tray, removable perches and a door wide enough to reach every corner. These details are the difference between a five-minute job and a dreaded chore.

4. Predator protection

Foxes are bold and clever. Choose welded mesh (not chicken wire), two-action locks such as barrel bolts, and a solid floor or anti-dig skirt. Shut hens in at dusk every night, or fit an automatic door.

5. Timber or recycled plastic?

Pressure-treated timber looks beautiful and is easy to repair. Recycled plastic costs more upfront but gives red mite nowhere to hide and can be pressure-washed. Both will last many years if looked after.