Six hens without leaving the 4-foot family
This is the biggest coop you can build and still reach everything from outside. It keeps the 4-foot depth of the smaller designs and stretches the length to 8 feet, and that takes it from a four-hen coop to a six-hen coop.
At 4 birds each hen has 5.75 square feet of coop floor. At 6 it’s 3.8. Oregon State, Virginia Tech and eXtension publish 3-4 square feet a bird for a coop with an attached run, so six sits inside that range with a little room left. The 60-inch roost gives six hens 10 inches each, the generous end of the 6-to-10-inch range Penn State, Oregon State and Maryland Extension publish.
Two nest boxes cover six hens. That’s one box per three, better than the one-per-four-to-five UC Davis, Certified Humane and RSPCA settle on.
The run is 32 square feet. That’s 8 square feet a bird at four hens, which meets the 8-10 square feet extension services recommend for a permanent run, and 5.3 at six, which doesn’t. Four hens can live here full time. Six is a flock that also gets yard time.
What it costs against the sizes either side
| Design | Coop | Run | Hens | Build time | Materials |
|---|---|---|---|---|---|
| 4x6 coop | 16 sq ft | 24 sq ft | 3–4 | 18–26 hrs | $1,900–$2,450 |
| 4x8 lean-to | 23 sq ft | 32 sq ft | 4–6 | 12–18 hrs | $2,100–$2,750 |
| 4x8 shed (this one) | 23 sq ft | 32 sq ft | 4–6 | 16–24 hrs | $2,250–$2,900 |
| 6x8 gable coop | 37 sq ft | 48 sq ft | 6–9 | 26–34 hrs | $2,700–$3,450 |
Three things stand out.
From the 4x6 it’s $350-$450 more for seven more square feet of coop, eight more of run and two more hens. Per square foot of coop, it’s the better value of the two: roughly $98-$126 here against $119-$153 for the 4x6.
The build time doesn’t go up. The plan budgets 16 to 24 hours against the 4x6’s 18 to 26. A single slope has no ridge, no 45-degree rafter cuts and no rafter ties, and that offsets the extra length.
The next step, to the 6x8 gable, is another $450-$550 and three more hens. It also takes you to a 6-foot depth you can’t reach across, which is a different kind of coop to live with. If six hens is the plan, stop here.
Where the height goes on a shed roof
Here’s something the spec table shows but doesn’t explain. This coop has 48-inch walls, a foot taller than the 36-inch walls on the 4x4 and 4x6. Yet its roof tops out lower: 91-5/16 inches against their 94-9/16.
That’s the shed roof at work. A gable puts its height into a triangle above the walls, over the birds’ heads, where you can’t use it. A single slope at 3:12 puts only 12 inches of rise over the whole depth, so the height lives in the walls instead.
For you, that means a taller front wall to work through. You’re still reaching in from outside, but with more room above your arms and less of the crouch the 36-inch coops demand. For the hens it means more air above the roost. For the neighbors it means a lower building.
The trade is looks. A single slope reads as a utility shed. If you want the classic little-barn profile, that’s what the gable designs are for.
The vent strip lives on the high side for a reason
This design carries 3.3 square feet of permanent vent, and where it sits matters as much as how big it is.
The vent is a continuous strip along the top of the back wall, 5-1/2 inches deep and nearly the full 8-foot length. On this roof the back wall is the high side. Warm, moist air rises, and on a single-slope roof it collects under the high edge. Putting the opening there lets it leave without anyone needing to open anything.
The rule for that strip is simple. It’s covered in quarter-inch hardware cloth, and it stays open all year. At six hens it works out to about 79 square inches a bird. You’ll often see a rule of 1 square foot of vent per 10 square feet of floor; it has no published source, and moisture comes off the birds, not the floor. The outcome is what counts: dry walls in the morning, no ammonia smell at bird height. Don’t close it for winter. The ventilation guide explains why cold is far less of a problem than trapped moisture.
A 16-foot run of structure, freestanding
Coop plus run is 192 inches long by 48 wide. That’s 16 by 4 feet on 10 pier blocks and seven ground-contact posts. It’s long and narrow, which means it can run along a fence line or a garden edge without taking over the yard.
Freestanding is the point. Unlike the lean-to, this design doesn’t need anything to lean on, so you choose the spot for drainage, shade and your own walking path rather than for where a wall happens to be. If the best ground in the yard is out in the middle, you can put it there.
The floor sits 14 inches off grade. That’s above the “foot or so” Colorado State Extension gives for discouraging rats and skunks from nesting underneath, and the strip under the coop becomes shaded run space on a hot afternoon.
Around the run, the material list calls for 86 feet of quarter-inch, 19-gauge hardware cloth with a buried apron. University of Kentucky Extension covers the quarter-inch reasoning in ID-245. A least weasel gets through half-inch, and a raccoon only needs to reach. The predator-proofing guide has the details.
Three windows on a small coop
This design has three 18-by-23-inch windows, one more than the lean-to. Two sit on the front wall either side of the access panel. The plan puts hardware cloth on the inside of every window opening, so they can stay open on summer nights.
That’s what makes this a good small coop for a hot climate. The permanent vent strip handles the baseline air exchange, and the windows add cross flow when you need it. On a 4-foot-deep coop, air coming in the front has a short trip to the vent at the back.
What this design deliberately does not do
It doesn’t grow past six. There’s no partition to remove and no way to lengthen the coop without rebuilding an end wall.
It isn’t a walk-in. 48-inch walls are a real improvement over 36, but you still work from outside.
It doesn’t attach to anything. If you have a solid garage or shed wall with good drainage beside it, the lean-to version uses that wall as its back and saves a little money and time.
And it’s framed to published span tables, not a stamped engineering design. Specs and the preview PDF are free on this page. The full 40-page plan book is $4.99 on Etsy.