A basic hen house is a wooden box with a roof, ventilation, and a door—you can build one with standard tools and materials from a hardware store

A straightforward hen house does not need to be complicated. The most functional design is a rectangular wooden structure about 4 feet long, 3 feet wide, and 3 feet tall at the peak—large enough for three to four hens to roost and nest comfortably. You build it from 2-by-4 lumber for the frame, plywood for the walls, and corrugated metal or asphalt shingles for the roof. The whole project takes a weekend and costs between $150 and $300 in materials, depending on what you already have on hand.

The key to a long-lasting hen house is keeping moisture and predators out while letting air move through. That means a solid floor (not dirt), ventilation holes near the roof, a hinged roof or side panel for cleaning, and hardware cloth—not chicken wire—over any openings. Hens produce ammonia as they roost, so poor ventilation leads to respiratory illness. Predators (raccoons, foxes, hawks) will exploit any gap larger than a quarter-inch, so your construction needs to be tight.

Key Takeaways

  • A basic hen house frame is built from 2-by-4 lumber and plywood, with a hinged roof or side panel so you can reach inside to clean and collect eggs.
  • Hardware cloth (not chicken wire) must cover all openings because chicken wire does not stop raccoons or foxes from tearing through.
  • Ventilation holes drilled near the roof line prevent ammonia buildup, which causes respiratory disease in hens.
  • A solid wooden floor raised slightly off the ground keeps moisture and predators out and makes cleaning easier.
  • The entire structure should be painted or sealed to protect the wood from rain and extend its life to five to ten years.

Materials and tools you will need

For a 4-by-3-foot hen house, gather eight 8-foot lengths of 2-by-4 lumber, one sheet of 3/4-inch exterior plywood, one sheet of 1/2-inch plywood for the roof, 50 feet of 1/2-inch hardware cloth, 2-inch exterior wood screws (a 5-pound box), 1-inch roofing nails, and either corrugated metal panels or asphalt shingles. You will also need wood stain or exterior paint, a hinge kit (two heavy-duty hinges rated for outdoor use), and a straightforward barrel bolt or hook-and-eye latch.

Tools required are a circular saw or hand saw, a power drill with bits, a tape measure, a carpenter's square, a staple gun with 3/8-inch staples, and a hammer or pneumatic nailer. If you do not own these, most hardware stores rent circular saws and nailers for $15 to $25 per day. Borrowing from a neighbor or friend is also common for a one-time project.

Building the frame and floor

Cut your 2-by-4s into four pieces 4 feet long (the length), four pieces 3 feet long (the width), and four pieces 3 feet tall (the height). Lay two of the 4-foot pieces parallel on the ground 3 feet apart, then connect them with the 3-foot pieces at each end using 2-inch screws—two screws per joint. This is your floor frame. Flip it over and screw a sheet of 3/4-inch plywood to the bottom, leaving a 1-inch gap on one long side for drainage. This prevents water from pooling underneath and keeps predators from digging in.

Now stand the four vertical pieces (the 3-foot-tall 2-by-4s) at each corner and screw them to the floor frame. Connect the tops of the vertical pieces with 4-foot and 3-foot 2-by-4s to form the roof frame. Your structure should now look like a rectangular box. Raise the entire frame 6 to 12 inches off the ground using concrete blocks or treated wood posts at each corner—this keeps the floor dry and makes it harder for predators to burrow underneath.

Adding walls and ventilation

Cut 3/4-inch exterior plywood to fit each side of the frame. Screw the plywood to the 2-by-4s using 2-inch screws spaced every 12 inches. Before you close in the last wall, drill four 2-inch holes near the top of the three finished walls—these are your ventilation holes. Space them evenly so air can flow across the interior. Cover each hole with hardware cloth stapled to the inside of the wall so predators cannot enter through them.

On the fourth wall (usually the front), cut a door opening about 12 inches square, 12 inches up from the floor. This is where hens enter and exit. Attach a hinged wooden door to this opening using two heavy-duty outdoor hinges. The door should swing inward and have a straightforward barrel bolt or hook-and-eye latch on the outside so you can lock it at night. Hens are vulnerable to predators after dark, so this door must close securely every evening.

Installing the roof and weatherproofing

The roof should slope slightly so rain runs off. Cut two pieces of 1/2-inch plywood to fit the top of your frame, then attach them with 2-inch screws so they form a peak or slight angle. If you want a steeper slope for better drainage, add a 2-by-4 ridge beam down the center before attaching the plywood. Cover the plywood with either corrugated metal panels (fastened with roofing nails and rubber washers) or asphalt shingles. Metal is lighter and lasts longer; shingles are cheaper and easier to install if you have never done roofing.

Once the roof is on, paint or stain all exposed wood with exterior-grade paint or wood stain. This protects the lumber from rain and UV damage and extends the life of the hen house by several years. Pay special attention to the floor and any joints where water can seep in. Allow the paint to dry completely before moving the hen house to its final location.

Adding nesting boxes and roosts

Inside the hen house, hens need two things: a place to sleep (a roost) and a place to lay eggs (a nesting box). A roost is straightforward a 2-by-2 or 1-by-2 wooden beam mounted horizontally about 2 feet off the floor. Hens naturally perch on it at night. Mount it with brackets so it is sturdy and does not sag. One roost 3 feet long accommodates three to four hens comfortably.

A nesting box is a wooden crate or box about 12 inches square and 12 inches deep, filled with straw or wood shavings. You can build one from scrap plywood or buy a ready-made nesting box. Mount it on the wall about 18 inches off the floor, away from the roost so droppings do not fall into it. One nesting box serves two to three hens; if you have more hens, add another box. Hens prefer privacy when laying, so a box with a roof or overhang encourages use.

Placement, predator protection, and maintenance

Place your hen house in a spot that gets morning sun but afternoon shade, on level ground with good drainage. Avoid low spots where water pools after rain. Position it away from thick brush or tall grass where predators can hide. If you live in an area with foxes, coyotes, or bears, consider building a separate enclosed run (a frame covered with hardware cloth) attached to the hen house door, so hens can go outside safely during the day.

Check the hen house weekly for gaps, loose boards, or damage. Predators are persistent and will exploit any weakness. Replace any cracked plywood, tighten loose screws, and patch holes in the hardware cloth when ready. Clean out old bedding and droppings every two weeks to prevent ammonia buildup and disease. Refresh the nesting box straw and roost area regularly. In winter, add extra bedding for insulation, but keep ventilation holes open—a sealed hen house with poor air flow becomes a breeding ground for respiratory illness.

Frequently Asked Questions

Can I use chicken wire instead of hardware cloth?

No. Chicken wire is designed to keep hens in, not predators out. Raccoons and foxes can tear through it easily. Hardware cloth has a tighter weave and is made of stronger wire. It costs more but is essential for predator protection, especially if you live near woods or have seen wildlife in your yard.

How many hens can fit in a 4-by-3-foot hen house?

Three to four hens comfortably. Overcrowding leads to stress, fighting, and disease. Each hen needs about 3 to 4 square feet of floor space inside the coop. If you want more hens, build a larger house or add a second one.

Do I need to insulate the hen house for winter?

Most backyard hens tolerate cold well if the coop is dry and draft-free. Add extra bedding (straw or wood shavings) in winter for insulation, but do not seal the ventilation holes—moisture buildup is more dangerous than cold. In very cold climates, some people add a heat lamp, but this is not usually necessary for hardy breeds.

What should I do if I see a predator near the coop?

Lock the hens inside when ready and do not let them out until the predator is gone. Check the coop for damage and repair any gaps. If predators are frequent, build an enclosed run so hens can go outside safely during the day. Motion-activated lights or radios left on at night sometimes deter predators, but a find coop is your best defense.

How long does a wooden hen house last?

Five to ten years, depending on the wood quality, climate, and maintenance. Exterior plywood lasts longer than interior plywood. Paint or stain the wood every two to three years to protect it from rain and sun. If you use pressure-treated lumber for the frame and floor, it will last longer but costs more upfront.