A basic chicken coop is a wooden box with a roof, ventilation, and a door—you can build one in a weekend with hand tools and materials from a hardware store

A straightforward coop houses four to six chickens and needs three core parts: a weatherproof structure to keep predators out, ventilation to prevent moisture and ammonia buildup, and a door you can open and close. The most straightforward design is a rectangular wooden frame about 4 feet long, 3 feet wide, and 3 feet tall, with a sloped roof, hardware cloth walls, and a hinged door on one end. You do not need concrete, electricity, or advanced carpentry—basic hand tools and standard lumber work fine.

The coop sits on the ground or on a straightforward frame, and chickens roost on a wooden bar inside at night. During the day, they need an attached run (a fenced outdoor area) where they can scratch and peck without being taken by hawks or foxes. This guide covers the coop structure itself; the run is a separate fenced enclosure attached to one side.

Key Takeaways

  • A basic coop for four to six chickens is a wooden box about 4 feet long, 3 feet wide, and 3 feet tall, with a sloped roof and a hinged door.
  • Use 2-by-4 lumber for the frame, plywood for the roof, and hardware cloth (not chicken wire) for the walls to keep out predators.
  • Ventilation holes near the roof prevent moisture and ammonia from building up inside, which causes respiratory illness in chickens.
  • A roost bar inside lets chickens sleep off the ground, and a removable floor tray makes cleaning easier.
  • The coop sits on level ground or on concrete blocks; an attached run gives chickens a safe outdoor space during the day.

Materials and tools you will need

For a coop housing four to six chickens, gather 2-by-4 lumber for the frame (about 40 linear feet), one sheet of 3/4-inch plywood for the roof, and a roll of 1/2-inch hardware cloth for the walls. Hardware cloth is a metal mesh much stronger than chicken wire and keeps out raccoons and rats. You will also need galvanized wood screws (2.5 inches and 1.25 inches), galvanized hinges and a latch for the door, roofing material (asphalt shingles or metal panels), and a wooden dowel or branch for the roost bar.

Basic hand tools are enough: a circular saw or handsaw, a drill, a level, a tape measure, a square, and a staple gun with staples. A helper makes assembly faster, especially when holding pieces while you screw them together. If you do not own a saw, most hardware stores will make straight cuts for a small fee, which saves time and effort.

Building the frame and walls

Start by cutting four vertical posts from 2-by-4 lumber, each 3 feet tall. Cut four horizontal pieces for the base (two at 4 feet, two at 3 feet) and four for the top (same lengths). Lay the base pieces on level ground in a rectangle, then stand the posts at each corner and screw them to the base using 2.5-inch screws—two screws per joint. Attach the top pieces the same way, creating a rectangular frame.

Once the frame is square and level, cover the walls with hardware cloth. Unroll the cloth and staple it to the wooden frame, overlapping each seam by at least 2 inches and stapling every 4 to 6 inches. Pull the cloth tight as you go so it does not sag. Fold the bottom edge of the cloth outward and down along the ground, then staple it to the base frame—this prevents predators from digging underneath. Leave one wall open for the door; you will frame that separately.

Adding the roof and door

The roof is a straightforward peaked design that sheds water. Cut two pieces of 2-by-4 lumber to run the length of the coop (4 feet) and screw them to the top of the front and back walls at an angle, meeting at a peak in the middle. This creates the roof frame. Cover the frame with plywood, then add roofing material—asphalt shingles or corrugated metal panels both work. Overlap each row so water runs down and off, not into the coop.

For the door, build a straightforward frame from 2-by-4 pieces that fits the open wall space (roughly 2 feet wide and 2.5 feet tall). Cover it with hardware cloth, then attach it to the coop frame with two hinges on one side and a latch on the other. The door should swing open easily and close securely. Make sure the latch is strong enough to resist a raccoon's strength—a slide bolt or hook-and-eye latch works well.

Ventilation and the roost bar

Drill or cut four ventilation holes, each about 2 inches in diameter, near the top of the walls on opposite sides of the coop. These holes let moisture and ammonia escape without creating drafts at the chickens' roosting height. In cold climates, you can cover the holes with hinged wooden flaps that you open during the day and close at night, but do not seal them completely—chickens need fresh air even in winter.

Inside the coop, install a roost bar—a wooden dowel or sturdy branch about 1.5 inches in diameter, running lengthwise about 2 feet above the floor. Chickens naturally roost (perch) at night, and a bar lets them sleep off the ground where predators and moisture are less of a problem. Screw wooden supports to the walls and rest the bar on top, or drill holes through the bar and screw it directly to the walls. Space the bar at least 12 inches from the back wall so chickens do not roost against it and soil it with droppings.

The floor and cleaning access

The simplest floor is bare ground covered with bedding (wood shavings or straw), which you rake out and replace weekly. If you want a removable floor tray for easier cleaning, build a shallow wooden frame that fits inside the coop and cover it with plywood, leaving a gap at one corner so you can pull it out. Line the tray with bedding, and you can slide it out, empty it, and replace it without crawling inside.

Whatever floor you choose, plan to spend 15 to 20 minutes per week cleaning out wet or soiled bedding. Chickens produce a lot of droppings, and moisture buildup causes respiratory illness. If you use a tray, empty it twice a week in warm, humid weather. If you use bare ground, rake it out once a week and add fresh bedding.

Attaching a run and finishing touches

A run is a fenced outdoor enclosure attached to the coop door, giving chickens a safe space to scratch and peck during the day. Build it from 2-by-2 lumber and hardware cloth in a rectangular shape about 8 feet long and 4 feet wide, with a hinged door so you can enter to collect eggs or catch a chicken. Attach one long side of the run to the coop wall using hinges or bolts, so the run can swing open or be removed if you need to move the coop.

Before you move chickens in, check that all hardware cloth is stapled securely, the door latches firmly, the roof does not leak, and ventilation holes are clear. Walk around the coop and run looking for gaps or sharp edges. Smooth any rough wood with sandpaper so chickens do not get splinters. If you live in a very cold climate, add a layer of straw or wood shavings inside for insulation, but keep ventilation holes open.

Common mistakes to avoid

Using chicken wire instead of hardware cloth is the most common mistake—raccoons and rats can tear through it. Hardware cloth costs more but lasts years and actually keeps predators out. Another mistake is poor ventilation: a sealed coop stays warm but becomes humid and toxic, and chickens develop respiratory infections. Ventilation holes near the roof prevent this without creating drafts.

Failing to find the door latch is another problem. A raccoon can open a straightforward hook or a loose latch, so use a slide bolt or a carabiner clip that requires deliberate force to open. Finally, do not skip the roost bar—chickens that sleep on the ground are more vulnerable to predators and illness. A straightforward bar takes 20 minutes to install and makes a real difference in chicken health.

Frequently Asked Questions

How much does it cost to build a straightforward chicken coop?

Materials typically run between $200 and $400 depending on local lumber prices and whether you already own tools. Hardware cloth and roofing material are the biggest expenses. If you build the run as well, add another $100 to $200. Prices vary by region and by the size of your coop.

Can I build a coop without a run?

Yes, but chickens need outdoor time to stay healthy and happy. Without a run, you must let them out to free-range in your yard during the day and lock them in the coop at night. A run lets them peck and scratch safely without you having to supervise. Most people find a run worth the extra effort.

What size coop do I need for more chickens?

Plan for about 3 to 4 square feet of coop space per chicken and 8 to 10 square feet of run space per chicken. A 4-by-3-foot coop holds four to six chickens comfortably. For eight chickens, build a 4-by-6-foot coop or two smaller ones. Overcrowding causes stress, fighting, and illness.

Do I need to treat the wood with sealant or paint?

Untreated wood lasts several years and is safe for chickens. If you want to extend the life of the coop, paint or stain the exterior with non-toxic, water-based products. Do not use pressure-treated lumber or creosote—both are toxic to chickens. Plain wood is fine and easier to repair when it eventually rots.

How do I protect the coop from predators at night?

Close and latch the coop door every evening and open it every morning. A find latch and hardware cloth walls keep out raccoons, foxes, and opossums. If you live in an area with bears or large predators, consider an electric fence around the run or a motion-activated light. Most backyard predators are nocturnal, so a locked coop is your main defense.