How big should a chicken run be?
The widely used backyard figure is about 10 sq ft of run per standard hen, roughly half that for bantams and a little more for heavy breeds. That is the amount of ground that lets birds scratch, dust-bathe and get away from the hen at the top of the pecking order. Commercial minimums are lower, but they assume birds kept for production, not a backyard flock you want to stay calm and healthy.
Run sizes by flock (standard breeds)
| Hens | Minimum run | Example |
|---|---|---|
| 4 | 40 sq ft | 4 × 10 ft |
| 5 | 50 sq ft | 5 × 10 ft |
| 6 | 60 sq ft | 6 × 10 ft |
| 10 | 100 sq ft | 10 × 10 ft |
| 12 | 120 sq ft | 10 × 12 ft |
| 15 | 150 sq ft | 10 × 15 ft |
| 20 | 200 sq ft | 10 × 20 ft |
Why hardware cloth, and why an apron?
Chicken wire keeps chickens in. It doesn't keep raccoons, which can reach through it, or dogs, which can tear it, out. Half-inch galvanized hardware cloth is the standard predator-resistant choice. Predators that dig usually start right at the fence line, so a 12–24 in apron of hardware cloth laid flat on the ground outside the run, or buried in an L shape, stops most of them without a deep trench.
The roll estimate adds 10% for overlaps and cutting waste. If one long side of the run is the coop wall, subtract that length from the perimeter before you buy.
Gear that helps
- 1/2 in galvanized hardware cloth (19 gauge is common)
- Fence staples or screws with fender washers
- Galvanized hog-ring pliers for joining panels
- Heavy-duty run netting as a cheaper roof option
We may earn a commission from some links. See our disclosure.
Frequently asked questions
Can a run be too small?
Yes. Crowding leads to feather pecking, muddy ground and more disease. If space is tight, keep fewer birds or let them free-range under supervision.
Does a covered run count as coop space?
A dry, covered run makes winter much easier for the birds, but they still need their indoor allowance for sleeping and bad weather.
Sources
- Oregon State University Extension, EC 1644: Backyard chicken coop design
- Penn State Extension: Management Requirements for Laying Flocks
Last reviewed October 2026. These are planning estimates for hobby flocks. For sick birds, contact a poultry vet or your state extension office.