Chicken Coop Plans: Dimensions, Cut Lists and Materials

Size a flock that is not on this page — with breed, climate and confinement adjustments applied — in the coop size calculator, and price the build in the coop build cost calculator.

Download all four builds as a free printable PDF — one page, sized for a letter sheet, with the cut list, sheet count and materials for every size. Generated from the same figures as this page, so the two cannot disagree.

What these plans are, and what they are not

Search for coop plans and almost everything you find is sold by someone who sells coops or plan sets. This page sells nothing, so it can be blunt about its own limits.

What you get here: exact outside dimensions, a member-by-member cut list in 2×4, the number of 4×8 sheets each build consumes, and the hardware cloth, nest box, roost and ventilation quantities that go with it. Every dimension is derived from the space allowances the rest of this site already uses, which come from cooperative extension sources.

What you do not get here: span tables, load calculations, footing design, or a fixing schedule. A chicken coop is a small, light structure, but “small and light” is not the same as “verified”. If you are building anywhere with snow load, sustained wind, or a permit requirement, have someone who builds for a living look at the framing before you cut.

If you came here searching for chicken coop blueprints, this is the dimensioned equivalent rather than the drawing itself. Every measurement you would scale off a blueprint is on this page — footprint, wall heights, roof pitch, and every framing member with its length — plus the material quantities a drawing usually leaves you to take off yourself. What is missing is the engineering behind a real blueprint, which is the part in the paragraph above.

The dimensions below are chosen to cut efficiently from standard 4-foot sheet goods. They are not themselves a published standard — the same convention chicken coop sizes uses.

The four builds

Standard-size hens with daily access to a run. Floor area is 4 sq ft per bird, which sits inside Poultry Extension’s recommended 3 to 4 sq ft range.

Stick counts include 10 percent waste. All four use a shed roof at a 3:12 pitch — the back wall is lower, and the roof runs off the back.

Heavy breeds need about 25 percent more floor than these figures; bantams about half. A cold climate adds 25 percent to the indoor number. Birds kept in the coop most of the day need roughly two and a half times the floor shown here — at which point you want the next size up, not this one.

4×4 — four hens

Sixteen square feet. The smallest build here that still gives four standard hens their full allowance.

Outside dimensions: 4 ft wide × 4 ft deep. Front wall 5 ft 6 in, back wall 4 ft 6 in.

Sheet goods: 1 floor, 3 walls, 1 roof — 5 sheets of 4×8.

2×4: about 149 linear feet, so 21 eight-foot sticks with waste.

4×6 — six hens

Twenty-four square feet, and the size most backyard flocks actually end up wanting. Six hens is where a first flock usually settles.

Outside dimensions: 6 ft wide × 4 ft deep. Front wall 5 ft 6 in, back wall 4 ft 6 in.

Sheet goods: 1 floor, 4 walls, 2 roof — 7 sheets of 4×8.

2×4: about 198 linear feet, so 28 eight-foot sticks with waste.

4×8 — eight hens

Thirty-two square feet. The same 4 ft depth as the two builds above, stretched to a full 8 ft — which means the floor, plates and roof all land on sheet and stick lengths without a joint.

Outside dimensions: 8 ft wide × 4 ft deep. Front wall 5 ft 6 in, back wall 4 ft 6 in.

Sheet goods: 1 floor, 4 walls, 2 roof — 7 sheets of 4×8.

2×4: about 228 linear feet, so 32 eight-foot sticks with waste.

This is the best-value build of the four. It houses twice the birds of the 4×4 for about half again the materials, because the extra length costs you studs and sheets but no additional corners.

6×8 — twelve hens

Forty-eight square feet, and deep enough to walk into. The back wall drops to 4 ft to hold the same 3:12 roof pitch across a 6 ft depth.

Outside dimensions: 8 ft wide × 6 ft deep. Front wall 5 ft 6 in, back wall 4 ft.

Sheet goods: 2 floor, 5 walls, 3 roof — 10 sheets of 4×8.

2×4: about 277 linear feet, so 39 eight-foot sticks with waste.

At 6 ft deep the rafters run 7 ft 3 in including the overhang, so they will not cut two-to-a-stick from an 8 ft length. Buy 10 ft or 12 ft stock for the roof if you want to avoid waste.

What goes inside

Nest boxes, roost and ventilation scale with the flock, not the footprint. These are the same figures the coop size calculator returns.

Nest boxes are a minimum of two, then roughly one per four hens, following Penn State Extension. A standard box is 12 in × 12 in × 12 in. Hang them on the wall rather than building them into the floor — floor-mounted boxes eat the floor area you just paid for, and are the single most common way an advertised capacity gets inflated.

Roost is 10 inches of bar per standard bird, which is inside Virginia Cooperative Extension’s 8 to 10 in and University of New Hampshire Extension’s 9 to 12 in. It can be split across several bars at different heights; birds sort themselves by rank. Use rounded stock about 2 inches across — University of Minnesota Extension recommends rounded, non-metal material, because chickens grip when they sleep and cannot grip a flat 2×4 face.

Mount the roost higher than the nest boxes. Given the choice birds sleep on the highest thing available, and if that is a nest box you will be cleaning eggs every morning.

Ventilation is the larger of 10 percent of floor area or 1 sq ft per bird, mounted high — above roost height, so air moves without draughting the birds at night. This one is a FlockMath planning convention rather than a published figure: neither Penn State’s housing page nor Poultry Extension’s ventilation page gives a number. Cover the openings in hardware cloth, not chicken wire.

The run

Run area is 10 sq ft per standard bird, which meets or exceeds the outdoor minimum in Penn State’s Table 1.

The cloth figure covers the walls at 4 ft. Covering the top as well adds the run area again in netting or cloth, and it is worth doing — an uncovered run is open to hawks, and to anything that climbs.

Use half-inch hardware cloth, not chicken wire. Chicken wire keeps chickens in. It does not keep anything out: a raccoon can reach through it, and a determined dog goes straight through. This is the one place on a coop build where the cheaper material is not a saving.

Framing conventions these lists assume

Every cut list above is generated from the same set of assumptions. If you change one, recalculate rather than adjusting by eye.

• 2×4 framing at 16 inches on centre, for floor joists, studs and rafters alike.
• Stud lengths are net of plates — 3 inches taken off the wall height for a bottom plate and a single top plate.
• Side walls sit between the front and back walls, so side plates are the depth less 7 inches for two wall thicknesses.
• Shed roof at 3:12, with a 6 inch overhang front and back. Rafter lengths are the true sloped length including that overhang.
• Sheet goods are 4 ft × 8 ft, and sheet counts are rounded up from surface area without a cutting diagram — an efficient layout will sometimes save one.
• Stick counts add 10 percent for waste and error.

Nothing here specifies fixings, sheathing thickness, footings, or how the coop meets the ground. Those are the parts that decide whether a structure lasts, and they depend on your site.

Frequently asked questions

What size chicken coop do I need?

Four square feet of floor per standard hen with run access. That is 16 sq ft for four hens, 24 for six, 32 for eight and 48 for twelve. Heavy breeds want about 25 percent more, bantams about half, and a flock kept inside most of the day needs roughly two and a half times those figures.

How much lumber does a chicken coop take?

A 4×6 coop for six hens takes about 198 linear feet of 2×4 — 28 eight-foot sticks allowing for waste — plus 7 sheets of 4×8 sheet goods. A 4×4 takes 21 sticks and 5 sheets; a 6×8 takes 39 sticks and 10 sheets.

Are free chicken coop plans any good?

The dimensions usually are. What free plans rarely include is an honest floor-area-per-bird figure, so a plan labelled for eight hens is often sized for three or four. Check the arithmetic yourself: multiply the interior floor dimensions and divide by the claimed capacity. Under 4 sq ft per bird and the plan assumes your birds live outdoors.

Are these chicken coop blueprints?

Not in the strict sense, and the difference is worth knowing before you build. A blueprint is an engineered drawing: it carries spans, loads, footings and a fixing schedule, and a professional is accountable for them. What is here is the dimensional half — footprint, wall heights, roof pitch, a member-by-member cut list, sheet counts and hardware cloth — free, and printable on one page.

For a small backyard coop that is usually the half people actually need; the numbers are what you take to the timber yard. If your build needs the engineering — a large structure, heavy snow load, or a permit that asks for stamped drawings — that is a different document, and this is not it.

How tall should a chicken coop be?

Tall enough that the roost sits above the nest boxes and the ventilation sits above the roost. The builds here use a 5 ft 6 in front wall, which gives room for all three and lets you reach the back without crawling. A 3 ft 6 in coop works for the birds but is miserable to clean.

Can I build a chicken coop from these plans without experience?

You can build the box. These are simple stud-framed structures and the cut lists are complete. What is not here is the judgement about span, fixing and ground contact that decides whether it is still standing in five years. If this is a first build, have the framing checked before you sheathe it.

What does it cost to build a chicken coop?

Using new materials at 2026 prices, a basic 24 sq ft coop with a 60 sq ft run runs about $1,335 in materials. Standard quality is around $1,785. The coop build cost calculator breaks that down by size, quality and roofing, and compares it against prefab prices.

Do I need a permit to build a chicken coop?

It depends entirely on where you live. Some municipalities cap flock size at four or six birds, some require a setback from the property line, and some ban roosters outright. Structures under a certain floor area are often exempt from permits, but “often” is not “always”. Check before you cut.

Sources

Space allowances and interior fittings follow the same sources as the coop size calculator, where each figure is set out in full along with which ones are FlockMath planning conventions rather than published minimums.

• Poultry Extension — Housing — the 3 to 4 sq ft indoor allowance for standard birds.
• Penn State Extension — Small Scale Poultry Housing — Table 1 outdoor minimums, nest box ratio, and the separate bantam roost figure.
• Virginia Cooperative Extension — Small-Scale Poultry Housing — 8 to 10 inches of roost per standard bird.
• University of New Hampshire Extension — 9 to 12 inches of roost per bird.
• University of Minnesota Extension — rounded, non-metal roost material about 2 inches wide.

The build dimensions, cut lists, sheet counts, wall heights and roof pitch are ours. They are arithmetic from the space allowances above, chosen to cut efficiently from 4-foot sheet goods, and they are not a published standard or an engineered design.