Start with a basic frame and wire enclosure

A functional chicken coop needs four things: a frame to hold it together, wire mesh to keep predators out, a roof to shed rain, and a door you can open and close. The simplest design is a wooden box on legs, roughly 3 feet tall and 4 feet by 8 feet on the ground — large enough for four to six chickens without crowding. You do not need a foundation; the legs keep the coop off wet soil and let you move it if you need to.

Start by building the frame from 2-by-4 lumber. Cut four vertical posts about 3 feet long and nail or screw them to a rectangular base made from the same lumber. Add horizontal supports between the posts to brace the walls. Once the frame is square and sturdy, wrap the sides and top with hardware cloth — a wire mesh with half-inch holes that keeps out raccoons and rats. Staple it tightly so nothing can peel it back.

Do not use chicken wire alone. Chicken wire keeps chickens in but does not stop predators from tearing through. Hardware cloth costs more but is the difference between losing birds and keeping them alive.

Key Takeaways

  • A basic coop for four to six chickens is a wooden frame 4 feet by 8 feet, wrapped in hardware cloth and roofed to keep rain out.
  • Hardware cloth with half-inch holes stops predators; chicken wire alone will not.
  • Nesting boxes inside should be dark, roughly 12 inches square, and filled with straw or wood shavings so hens will lay eggs there instead of on the floor.
  • A hinged roof or removable panel makes cleaning and egg collection much faster than crawling through a small door.
  • Roosts — wooden bars where chickens sleep at night — should be higher than nesting boxes so droppings do not fall into the boxes.

Add a roof that sheds water

The roof is what keeps the interior dry during rain and snow. The simplest roof is two pieces of plywood leaned together at an angle, like an A-frame, and covered with roofing felt or shingles. Pitch it so water runs off one side, not into the coop. A 45-degree angle works well and is straightforward to build.

If you want to access the coop from above — to collect eggs or clean without bending — make the roof hinged on one side so it opens like a lid. Attach it with heavy-duty hinges and add a prop stick or chain so it stays open while you work. This design saves your back and makes the job faster.

Install nesting boxes and roosts inside

Chickens lay eggs in dark, enclosed spaces. Build nesting boxes from scrap wood or plastic storage bins cut in half. Each box should be roughly 12 inches square and 12 inches deep, filled 3 inches deep with straw or wood shavings. Mount them along one wall, about 2 feet off the ground. One box per three hens is enough; they will share.

Roosts are wooden bars where chickens sleep at night. They should be 2 to 3 inches in diameter, smooth so the birds' feet grip without strain, and mounted 3 to 4 feet high — higher than the nesting boxes so droppings do not land in the boxes. Space them 12 inches apart so the birds do not crowd each other. A straightforward design is a 2-by-2 beam bolted horizontally between two walls.

Build a find door and ventilation openings

The door should be large enough for you to reach in and grab a bird if needed — at least 12 inches square. Hinge it on one side and add a straightforward latch that you can open and close quickly. Many coops use a sliding door that runs in a wooden track; it is fast and does not swing into your face.

Ventilation keeps ammonia from building up and causing respiratory problems. Drill or cut openings near the top of two opposite walls, each about 6 inches square. Cover them with hardware cloth so predators cannot climb in. The openings should be above the roosts so cold drafts do not blow directly on sleeping birds.

If you live where winters are harsh, you can close these vents with hinged wooden covers and open them again in spring. Chickens generate enough body heat to stay warm in a sealed coop as long as it is not wet.

Choose materials that last and resist rot

Pressure-treated lumber resists rot and lasts longer than untreated wood, especially for the frame and any parts that touch the ground. Avoid creosote-treated railroad ties; the chemicals can leach into soil where chickens scratch. Hardware cloth made from galvanized steel resists rust better than plain steel.

Roofing felt is cheaper than shingles but lasts only a few years. Shingles cost more upfront but will keep the coop dry for 10 to 15 years with no maintenance. If you plan to keep the coop for more than three years, shingles are worth the extra cost.

Treat cut ends of lumber with wood sealant to slow rot. Do not use paint or stain inside the coop; chickens peck at it and ingest the chemicals. Leave the interior bare wood or coat it with food-grade sealant if you want protection.

Plan for predator protection below ground

Raccoons and foxes dig under coops to reach chickens. If your coop sits on legs but has no floor, bury hardware cloth 12 inches deep around the perimeter and bend it outward at the bottom in an L-shape. This stops diggers from tunneling underneath.

If you build a solid floor inside the coop, use hardware cloth instead of wood so water drains and bedding does not rot. Staple it to the frame and cover it with straw or wood shavings that you replace weekly.

A simpler option is to move the coop every few weeks to fresh ground. Predators learn where food is; moving the coop keeps them from establishing a routine. Lightweight coops on wheels or skids make this practical.

Size the coop for the number of birds you have

Crowding causes stress, disease, and fighting. Plan for at least 3 to 4 square feet of floor space per bird inside the coop, and 8 to 10 square feet per bird in an outdoor run if you have one. A 4-by-8-foot coop holds four to six chickens comfortably; a 4-by-12-foot coop holds eight to ten.

Nesting boxes and roosts take up space, so the usable floor area is smaller than the total footprint. Measure twice before you build. A coop that feels roomy now will feel cramped in a year when you add more birds.

Frequently Asked Questions

Do I need a run attached to the coop?

A run — an enclosed outdoor area — lets chickens scratch and peck without being eaten by hawks or foxes. It is not required, but chickens are healthier and lay more eggs when they have outdoor space. A straightforward run is hardware cloth stapled to a wooden frame, 3 to 4 feet tall, attached to the coop door.

What bedding should I use inside the coop?

Pine shavings and straw both work. Avoid cedar and oak shavings; they are toxic to chickens. Change bedding weekly or when it gets wet and smelly. Wet bedding causes respiratory illness and ammonia buildup.

How do I keep the coop cool in summer?

Paint the roof white to reflect heat, and make sure ventilation openings are large and unobstructed. You can also add a shade cloth over the run. Chickens stop laying eggs when they overheat, so air flow matters.

Can I build a coop without a foundation?

Yes. Legs or skids keep the coop off wet ground, which is enough. A solid foundation is not necessary unless you want to move the coop less often. Legs make it easier to clean underneath and let you move the coop to fresh ground.

How much does it cost to build a basic coop?

A straightforward coop for four to six chickens costs between $200 and $500 in materials, depending on whether you use new or reclaimed lumber and how much you already have on hand. Hardware cloth and roofing materials are the biggest expenses. Used materials from demolition sites or online marketplaces can cut the cost in half.