# DIY Backyard Chicken Coop for 4–6 Hens

> Build a predator-proof DIY backyard chicken coop for 4–6 hens — space requirements, ventilation, nesting boxes, and raccoon-proof hardware.

Canonical: https://www.backyardfreedomlab.com/blog/diy-backyard-chicken-coop/
Published: 2026-07-07

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A backyard flock of 4–6 hens produces roughly 18–30 eggs per week at good laying rates ([UNH Extension](https://extension.unh.edu/resource/producing-your-own-eggs)) — enough for most households with surplus to share. The coop to house them costs a few hundred dollars to build yourself, and the build itself is a single ambitious weekend project.

The challenge with chicken coop guides is that most of them leave out the details that actually matter: why chicken wire doesn't protect chickens, exactly how much ventilation a coop needs, and the specific hardware that stops raccoons from opening your door latches. This guide covers the real specs based on what extension service research and experienced backyard flock keepers consistently report — not the idealized version you see on Pinterest.

**Short answer:** Build an elevated 4×8 coop with an attached run, allowing 4 square feet per bird inside and 10 per bird in the run, and sheath every opening in 1/2-inch hardware cloth rather than chicken wire. Get ventilation high on the walls, put predator-proof two-step latches on every door, and you can house 4–6 hens for a few hundred dollars in a single weekend build.

## How Much Space Do Your Chickens Need?

Before designing or buying anything, start with the space requirements. Oregon State University Extension recommends at least 3 square feet per bird inside when birds have a run, and 8 to 10 square feet per bird if they have no outdoor access ([OSU Extension](https://extension.oregonstate.edu/sites/extd8/files/catalog/auto/EC1644.pdf)). Penn State lists 10 square feet per large chicken in outside runs ([Penn State Extension](https://extension.psu.edu/small-scale-poultry-housing)). The numbers below build in a margin above those minimums; crowding invites stress behaviors (feather pecking, aggression, laying problems).

**Inside the coop (enclosed sleeping area):**
- 4 square feet per bird, minimum
- For 6 hens: 24 square feet — a 4×6 or 4×8 footprint works

**In the run (outdoor enclosed exercise area):**
- 10 square feet per bird, minimum
- For 6 hens: 60 square feet — a 6×10 or 8×8 run attached to the coop

**Why these numbers matter:** A coop that's too small produces stressed birds. Stressed birds peck each other, stop laying, and get sick. Inadequate space paired with boredom is a common reason backyard flock projects struggle.

If your chickens will free-range in a fenced yard during the day, the run can be smaller. If they're confined full-time, don't go below the numbers above.

## The 4×8 Elevated Coop Design

The most practical DIY design for 4–6 hens is an elevated 4×8-foot sleeping coop with an attached run. This is the design that fits a standard sheet of plywood without waste and scales well.

**Why elevated:** Oregon State University Extension advises raising the coop at least 1 foot off the ground to discourage rats, snakes, raccoons, and skunks ([OSU Extension](https://extension.oregonstate.edu/sites/extd8/files/catalog/auto/EC1644.pdf)). Raising the floor 12–24 inches also creates shaded outdoor space under the coop that the chickens use during hot weather, and it reduces the damp-floor problem. Ground-level coops in most climates accumulate moisture from the earth below, which causes respiratory disease and mold. An elevated floor dries naturally because air circulates underneath.

**Concrete block or lumber post footings:** Four 4×4 posts or concrete blocks at the corners. Use pressure-treated lumber for any framing that makes contact with the ground — regular lumber rots much faster in a coop environment.

### Materials List (4×8 coop, 6×10 attached run)

| Material | Quantity | Estimated Cost |
|----------|----------|---------------|
| 4×8 sheets of exterior-grade 3/4-inch plywood | 3 sheets | $90–$120 |
| 2×4 framing lumber, 8-foot lengths | 12–14 pieces | $50–$70 |
| Corrugated metal roofing panels | 2 panels (4×8) | $30–$50 |
| Hardware cloth, 1/2-inch mesh, 4 feet wide | 50 linear feet | $40–$60 |
| Exterior screws, hinges, latches | — | $20–$30 |
| Roofing screws and weather strip | — | $10–$15 |

**Total materials: approximately $240–$345, depending on local prices.** Using reclaimed materials (pallets for walls, salvaged windows for ventilation panels) can cut this significantly. The key cost areas that can't be skimped on: pressure-treated lumber for ground contact, and hardware cloth (see below — this is where most predator losses happen).

## Building the Coop: Step by Step

### Step 1: Frame the Floor

Build a rectangular frame from 2×4 lumber at 4×8 feet, with cross-members every 16 inches for floor support. Add a center beam down the long axis for rigidity. Cover with 3/4-inch exterior plywood and apply an exterior sealer or paint — the floor takes the most abuse from droppings and moisture.

Cut or notch corners for the four corner posts before assembling, or mount the frame on four 4×4 posts set in concrete or anchored with post brackets.

### Step 2: Frame and Sheath the Walls

Build four wall frames from 2×4s, standing the coop at roughly 5–6 feet tall at the peak (makes cleaning easier — you need to be able to reach inside). The back wall can be shorter than the front to create a sloped roof for rain runoff.

Cut openings for:
- **The pop door** (small chicken door, 10"×12" minimum) on the side facing the run
- **A ventilation panel** on each of the two long walls, near the roofline (see ventilation section below)
- **A clean-out door** on the back wall — full-height access for removing bedding

Sheath with plywood. Oregon State University Extension notes coops do not need to be insulated, but they should be free of drafts ([OSU Extension](https://extension.oregonstate.edu/sites/extd8/files/catalog/auto/EC1644.pdf)). In very cold climates, rigid foam between studs can help.

### Step 3: Build the Roof

A simple shed roof (one slope) is the easiest build. Use 2×4 rafters at the same 16-inch spacing as the floor, sloped from the front wall height to the back wall height. Cover with plywood sheathing, then corrugated metal roofing for durability and easy water runoff.

Extend the roof 6–12 inches past the front wall to create an overhang that keeps rain off the pop door and run entry.

### Step 4: Install the Run

Frame the run with 2×4s or 1×4 furring strips at roughly 4-foot intervals. Cover every surface — sides, top, and floor apron — with 1/2-inch hardware cloth. Cover the roof of the run with solid roofing or shade cloth if your climate gets significant rain or your birds are in the run full-time.

The run attaches to the coop below the pop door, which opens directly into it.

## Ventilation: The Most Underrated Design Element

Ventilation is the single most important factor in flock health, and it's the element most coop guides treat as an afterthought.

**The rule:** Build in as much ventilation as possible without creating drafts or access for predators ([OSU Extension](https://extension.oregonstate.edu/sites/extd8/files/catalog/auto/EC1644.pdf)), and locate vents HIGH on the walls — near the roofline, not at roost level.

**Why high placement matters:** Ventilation removes ammonia fumes, carbon dioxide, and moisture from the coop ([OSU Extension](https://extension.oregonstate.edu/sites/extd8/files/catalog/auto/EC1644.pdf)), and dampness and ammonia buildup are signs a coop is under-ventilated ([Penn State Extension](https://extension.psu.edu/small-scale-poultry-housing)). Droppings and litter release ammonia at floor level. Ammonia gas is lighter than air and rises ([ATSDR](https://wwwn.cdc.gov/TSP/MMG/MMGDetails.aspx?mmgid=7&toxid=2)), so vents near the roofline let it exhaust instead of collecting around the birds, while keeping drafts off them at roost height.

In a 4×8 coop, two louvered vents positioned on opposite walls near the peak give you cross-ventilation. Add a third vent or a ridge vent for summer in hot climates.

**Year-round vents:** This is the mistake cold-climate builders make — sealing the coop tight in winter. You need ventilation in winter too, because confined birds produce both moisture (from respiration) and ammonia year-round. A damp coop in winter invites respiratory disease. Keep at least the upper vents open.

## Hardware Cloth vs. Chicken Wire: This Is Not Optional

Every backyard chicken resource says some version of this, and it's worth saying clearly because the cost difference leads people to make the wrong choice.

**Chicken wire keeps chickens in. It does not keep predators out.**

Chicken wire is made from thin, twisted wire that raccoons tear apart with their hands, foxes bite through with their teeth, and opossums push through anywhere the wire sags. It was never designed as a predator barrier. It's designed to define a boundary that chickens won't cross voluntarily.

**Hardware cloth** — also called welded wire mesh — is the actual predator barrier. It's welded at every intersection, not just twisted, and comes in 1/2-inch mesh that stops raccoon hands, snake bodies, and rodent entry.

Use [1/2-inch galvanized hardware cloth (Amazon)](/go/amz-s-hardware-cloth-1-2) for all openings, vents, and the run; University of Maryland Extension recommends 1/2-inch hardware cloth over windows to keep out wild birds, rodents, and varmints ([University of Maryland Extension](https://extension.umd.edu/resource/housing-requirements)). Use 1-inch mesh only for the bottom of large runs where you want grass to grow through — predator-proof the rest.

**The buried apron:** Coyotes, foxes, rodents, and dogs dig, and Oregon State University Extension advises burying fencing 6 inches to 1 foot into the ground ([OSU Extension](https://extension.oregonstate.edu/sites/extd8/files/catalog/auto/EC1644.pdf)). Burying the run perimeter is a step many builders skip. Extend hardware cloth 12 inches outward from the base of the run, buried just below ground level or laid on the ground surface and covered with 2 inches of dirt. Predators digging from outside will hit the buried cloth immediately rather than tunneling under the wall.

## Nesting Boxes and Roost Bars

**Nesting boxes:** One box for about every 3–4 hens. Each box should be about 12×12×12 inches ([OSU Extension](https://extension.oregonstate.edu/sites/extd8/files/catalog/auto/EC1644.pdf)). Position them 12–18 inches off the floor, lower than the roost bars. Fill with 2–3 inches of wood shavings, straw, or nesting pads.

Why lower than the roosts: chickens sleep on the highest available perch. If your nesting boxes are higher than the roost bars, hens will sleep in the boxes — covering the bedding in droppings, contaminating eggs, and creating a cleaning nightmare.

[Pre-built nesting boxes (Amazon)](/go/amz-s-chicken-nesting-box-4) that mount to the wall are easier than building custom boxes for most people. Salvaged plastic milk crates also work well and are usually free.

**Roost bars:** 2–3 inches wide with rounded or beveled edges (sharp edges cause foot problems). Allocate 8–10 inches of roost space per bird side-to-side; extension guidance ranges from 5 to 10 inches ([OSU Extension](https://extension.oregonstate.edu/sites/extd8/files/catalog/auto/EC1644.pdf)). Set bars 18–24 inches off the floor, with about 12 inches of clearance between bars if you have multiple rows ([Penn State Extension](https://extension.psu.edu/small-scale-poultry-housing)). A single 4-foot bar handles up to 5 hens.

Rough-cut 2×4 lumber laid flat (the 4-inch face up) is the standard roost bar — it's wide enough that chickens can cover their feet with their feathers on cold nights, reducing frostbite risk.

## Latches: The Detail That Saves Your Flock

Raccoons are genuinely dexterous and can work open simple fasteners like basic hook-and-eye latches.

Use at minimum:
- **Spring-loaded latches** that require simultaneous lift and pull
- **Padlocks or carabiner clips** through the latch opening
- Two-step fasteners on any door that gives access to the coop interior

The [automatic chicken coop door opener (Amazon)](/go/amz-s-automatic-chicken-coop-door) is the most valuable single investment for most flock owners after the coop itself. A good one opens at dawn and closes at dusk on a light sensor, eliminating the need to go out and secure the coop every evening. A night you forget to close the pop door, or close it late, is a common way flocks are lost. The device pays for itself the first time you're late getting home. Solar-powered models are also available.

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## Feeders, Waterers, and Daily Management

**Feeders:** Hanging feeders reduce feed waste dramatically versus trough feeders. A [3-pound hanging feeder (Amazon)](/go/amz-s-hanging-chicken-feeder-galvanized) holds enough for a small flock for 2–3 days. Mount it at shoulder height for your birds — when chickens have to reach up slightly, they waste less feed than when a feeder sits on the floor.

**Waterers:** [Automatic poultry waterers (Amazon)](/go/amz-s-chicken-automatic-poultry-waterer) with nipple drinkers stay cleaner longer than open-top fountains. Chickens scratch debris into open water constantly, requiring daily cleaning. Nipple drinkers keep debris out of the water. In winter, a [heated poultry waterer (Amazon)](/go/amz-s-heated-chicken-waterer-poultry) or a submersible tank heater prevents freezing without requiring electricity to the entire coop.

**Bedding:** The deep litter method reduces coop cleaning frequency. Start with 4–6 inches of pine shavings or straw on the coop floor. Add more bedding as the lower layers begin to compost. The composting process generates some heat in winter and the layered material can go months without a full cleanout if you turn it occasionally and keep moisture in check. Full cleanouts in spring and fall — the resulting material is excellent garden compost.

## What Do Chickens Eat and What Does It Cost?

For a small flock, the math is simple:
- Each chicken eats roughly 1/4 pound of feed per day (UNH Extension puts it at 90–100 pounds per hen over about 13 months of laying)
- 6 hens: about 1.5 pounds of feed daily, or about 45 pounds per month
- A 50-pound bag lasts 10 hens two to three weeks ([UNH Extension](https://extension.unh.edu/resource/producing-your-own-eggs)), so roughly one bag a month for 6 hens
- Monthly feed cost: the price of about one bag of layer feed

At that rate, 6 hens laying 4–5 eggs each per week generate 24–30 eggs weekly. Compare that against what you pay for eggs locally to estimate how long the coop takes to pay for itself.

Add kitchen scraps (vegetable trimmings, fruit peels) and garden forage to reduce feed costs further. Chickens that have access to grass, bugs, and compost piles may need less commercial feed.

## Predator Losses and How to Prevent Them

The most common predators by region and what stops each:

| Predator | Entry Method | Prevention |
|----------|-------------|------------|
| Raccoon | Hands through openings, opens latches | 1/2-inch hardware cloth, two-step latches |
| Red fox, coyote | Digging, biting through thin wire | Buried hardware cloth apron, welded wire run |
| Opossum | Squeezing through gaps | Seal all gaps >1/2 inch, hardware cloth on vents |
| Hawk, owl | Aerial attack in open run | Solid or wire roof on run, overhead netting |
| Rat, mouse | Chewing wood edges, entering through small gaps | Hardware cloth on all openings, suspended feeder |
| Snake | Ground-level gaps in coop | Seal foundation perimeter, hardware cloth at grade |

The pattern in all of these: hardware cloth and no gaps larger than 1/2 inch stop almost every predator at the structural level. Latches and an automatic door stop the remaining risk from human error (forgetting to close up).

## Connecting the Coop to Your Food System

Chickens are an efficient producer of protein to add to a backyard food operation. They convert a wide variety of inputs — kitchen scraps, garden waste, insects, forage — into high-quality protein (eggs) and a soil amendment (manure) for the compost pile.

The chicken-garden loop is a classic closed-loop food system: kitchen scraps and garden waste go to the chickens, chicken manure goes to the compost pile, compost goes to the garden, garden produces food and surplus for the chickens. Once you have a root cellar for winter vegetable storage and a chicken flock for year-round eggs, you have the two highest-value homestead additions most people can make with a modest budget.

Our [root cellar guide](/blog/how-to-build-a-root-cellar/) covers food storage infrastructure, and [vermicomposting](/blog/diy-vermicomposting-worm-bin/) covers the soil-amendment angle. The chicken coop is the piece that closes the loop — turning kitchen waste into protein rather than disposing of it.