A small hen house is a wooden shelter with nesting boxes, roosts, and ventilation that houses three to six chickens

A functional hen house does not need to be complicated. The basic structure is a wooden box roughly 3 feet tall, 4 feet wide, and 3 feet deep — large enough for a few birds to roost at night and lay eggs during the day. You build it from standard lumber (2x4s and plywood), add a hinged roof for cleaning access, cut openings for ventilation, and install roosts and nesting boxes inside. Most people finish a basic model in one or two days with hand tools or a drill.

The house itself does not need a floor — chickens do better on packed earth or sand, which drains and lets them dust-bathe. What matters is keeping predators out at night and rain off the birds. A solid roof, find door, and hardware cloth over any openings handle both.

Key Takeaways

  • A small hen house for three to six chickens needs a footprint of about 4 feet by 3 feet and a height of 3 feet, built from 2x4 lumber and plywood.
  • The structure requires a hinged or removable roof for cleaning, ventilation holes near the top, and a door that closes securely at night to keep predators out.
  • Inside, install roosts (wooden dowels or branches) about 2 feet high and nesting boxes (one box per two or three birds) filled with straw or wood shavings.
  • Hardware cloth, not chicken wire, covers any openings larger than a quarter-inch, because chicken wire does not stop raccoons or weasels.
  • The whole project costs between $150 and $300 in materials and takes a weekend with basic tools like a drill, saw, and level.

Gather materials and tools before you start

Buy pressure-treated 2x4 lumber for the frame (eight pieces, 8 feet long) and one sheet of 3/4-inch exterior plywood for the roof and walls. You will also need a box of 2.5-inch exterior wood screws, a roll of hardware cloth (1/4-inch mesh), a tube of exterior wood sealant, and roofing material — either corrugated plastic panels, metal roofing, or asphalt shingles over plywood. For the interior, get wooden dowels (1 to 1.5 inches diameter) for roosts and materials for nesting boxes: you can buy plastic nest boxes or build them from scrap wood.

Tools you need: a power drill with a screwdriver bit, a circular saw or hand saw, a tape measure, a level, a staple gun with staples, and work gloves. If you do not own a saw, most home improvement stores will cut lumber to length for a small fee. A helper makes the work faster, especially when holding pieces while you screw them together.

Build the frame and attach the walls

Cut your 2x4s into four pieces 3 feet long (for the height) and four pieces 4 feet long (for the length). Lay two of the 4-foot pieces flat on the ground parallel to each other, 3 feet apart. Stand the four 3-foot pieces upright at the corners and screw them to the long pieces with two 2.5-inch screws at each joint. Check that the frame is square by measuring corner to corner — both diagonals should be the same length. Use a level to make sure the frame sits flat.

Cut plywood into panels and screw them to three sides of the frame (front, back, and one side). Leave the other long side partially open for now — you will add a hinged door there later. Cut a piece of plywood for the roof large enough to overhang the frame by 6 inches on all sides. Attach it with hinges on one long edge so you can lift it open for cleaning and egg collection. Seal all exposed wood with exterior sealant to prevent rot.

Cut ventilation and add the door

Drill or cut two ventilation holes near the top of the back wall, each about 4 inches in diameter. Cover them with hardware cloth stapled to the inside so air flows through but predators cannot enter. These holes prevent moisture buildup and ammonia from urine, which damages the birds' respiratory systems.

On the open side, build a door frame from 2x4s and cover it with plywood. Attach it with hinges at the top so it swings down to close. Install a straightforward hook-and-eye latch or a sliding bolt that you can find from outside. The door should close snugly but not so tight that it warps in wet weather — leave a 1/8-inch gap all around. Cut a small pop-hole (about 8 inches square) near the bottom of the door and cover it with hardware cloth. This lets chickens move between the house and an outdoor run without you opening the main door.

Install roosts and nesting boxes

Roosts are where chickens sleep at night. Install two or three wooden dowels or branches running lengthwise inside the house, about 2 feet above the ground and spaced 12 inches apart. Screw wooden blocks to the inside walls to support each end of the dowels. Chickens will naturally perch on them at dusk. Do not install roosts directly above nesting boxes — droppings will soil the eggs.

Nesting boxes sit lower, about 1 foot off the ground. You need one box per two or three birds. A straightforward box is 12 inches wide, 12 inches deep, and 12 inches tall, with a hinged lid on top for egg collection. Line each box with 4 inches of straw or wood shavings. If you buy plastic nest boxes, mount them on a wooden frame inside the house. Leave a 2-inch lip at the front of each box so eggs do not roll out when the hen stands up.

Weatherproof the roof and seal gaps

The roof is the most important weatherproofing element. If you used plywood, cover it with corrugated plastic panels or metal roofing screwed down every 12 inches. Corrugated plastic is cheaper and lighter; metal lasts longer. Make sure the roof overhangs the walls by at least 6 inches on all sides to shed rain away from the base.

Walk around the outside and look for gaps where predators could squeeze in. Staple hardware cloth over any opening larger than a quarter-inch. Pay special attention to corners, the junction between the roof and walls, and any gaps around the door. Raccoons and weasels are persistent — a gap the size of your thumb is enough for a weasel to enter. Caulk seams with exterior sealant and let it dry fully before moving the house.

Set up the interior for comfort and cleaning

Spread 4 to 6 inches of wood shavings or sand on the floor. This absorbs moisture and droppings and gives chickens material for dust-bathing. Do not use cedar or pine shavings — they are toxic to birds. Aspen shavings or sand work well. You will clean this out every two to four weeks depending on how many birds you have and how often you refresh it.

Make sure the hinged roof opens fully and stays open without slamming shut. Install a prop stick or chain to hold it at a safe angle. Position nesting boxes where you can reach them without crawling inside. Leave at least 2 feet of clear floor space for the birds to move around and for you to sweep out soiled bedding. A small ramp or step leading up to the pop-hole helps younger or smaller birds get in and out.

Move the house and connect it to a run

A small hen house weighs 150 to 250 pounds when finished. Build it in the location where it will stay, or build it on a wooden pallet so you can move it with a hand truck. Position it on level ground in a spot that gets morning sun but has afternoon shade. Avoid low areas where water pools during rain.

The house itself is a sleeping shelter, not a full enclosure. Most people attach it to a larger outdoor run — a fenced area where chickens can scratch and forage during the day. The run can be as straightforward as a wooden frame covered with hardware cloth, or a mobile frame you move around the yard. The house and run together give your birds safety at night and freedom during the day.

Frequently Asked Questions

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

Three to six chickens, depending on the breed. Larger breeds like Wyandottes need more space; smaller breeds like Bantams need less. A rule of thumb is 3 to 4 square feet of floor space per bird inside the house. Overcrowding causes stress, fighting, and disease.

Do I need a floor in the hen house?

No. A dirt or sand floor drains better than wood and lets chickens dust-bathe naturally. If you live in an area with burrowing predators like foxes, you can lay hardware cloth on the ground under the house and bury it 6 inches deep around the perimeter to stop them from digging in.

What is the difference between hardware cloth and chicken wire?

Hardware cloth has a 1/4-inch mesh and is made of galvanized steel; it stops weasels, raccoons, and snakes. Chicken wire has a 1-inch mesh and is much weaker; predators tear through it easily. Use hardware cloth on all openings, especially the pop-hole and ventilation areas.

How often do I need to clean the hen house?

Remove wet or soiled bedding every few days and do a full bedding change every two to four weeks, depending on how many birds you have. A small house with three birds needs less frequent cleaning than one with six. Good ventilation and dry bedding reduce the cleaning frequency.

Can I build a hen house without a hinged roof?

Yes, but a hinged roof makes cleaning and egg collection much easier. If you prefer a fixed roof, build a removable side panel instead so you can access the interior. Without some way to reach inside, the house becomes difficult to maintain.