How to Build a Chicken Coop: Step-by-Step Plans for a 4×8 Beginner Coop
Building your own chicken coop costs roughly $300 to $600 in materials depending on your lumber choice and hardware. Buying a comparable pre-built coop from a farm store runs $600 to $2,000 and almost always delivers a structure that is too small, underventilated, and inadequately predator-proofed despite the “holds 8 hens” label on the box.
This guide builds a 4×8-foot coop with a 4-foot run underneath a raised floor, designed for 6 to 8 laying hens. The design is based on proven principles: adequate space per bird, high ventilation, hardware cloth security, and access doors placed where you actually need them for egg collection and cleanout.
What This Coop Provides
- Interior floor space: 32 square feet (adequate for 6 to 8 hens at 4 square feet per bird)
- Attached run below the raised floor: additional 32 square feet of protected outdoor space
- 4 nest boxes accessible from an exterior hinged egg door
- 2 interior roost bars at appropriate height
- Ventilation openings totaling approximately 4 square feet, hardware-cloth covered
- Pop door with manual or automatic opener option
- Full-length cleanout door on one end
Materials List
Framing lumber:
- (10) 2x4x8 studs for wall framing
- (4) 2x4x10 for floor joists and top plates
- (6) 4x4x8 posts for the corner supports (if building on posts) or 2x6x8 skids (if building on skids)
- (4) 2x4x8 for roof rafters
Sheathing and siding:
- (4) sheets 4×8 exterior plywood 1/2-inch (CDX or T1-11 siding for walls)
- (2) sheets 4×8 exterior plywood 1/2-inch for floor
- Roofing: metal roofing panels or asphalt shingles to cover a 4×9-foot roof area with 6-inch overhang on each end
Hardware:
- (50 square feet) 1/2-inch hardware cloth for all ventilation openings, run floor, and pop door area
- (1) exterior door hinge set for cleanout door
- (2) exterior hinges for egg collection door
- (1) predator-proof slide bolt or locking carabiner for each door
- (1) automatic or manual pop door and frame
- (6) nest box dividers or 1 pre-built nest box unit for 4 boxes
- (2) 2-inch diameter hardwood dowels or 2×4 lumber for roost bars
Fasteners:
- (5 lbs) 3-inch exterior deck screws
- (1 lb) 1.5-inch exterior deck screws
- (1 roll) galvanized hardware cloth staples or poultry staples for attaching hardware cloth
- Construction adhesive (1 tube)
Finishing:
- Exterior paint or wood sealant for all wood surfaces
- Roofing nails appropriate for chosen roofing material
Cut List
| Piece | Dimension | Quantity | Notes |
|---|---|---|---|
| Floor joists | 2×4 at 45 inches | 5 | Spaced 16 inches on center |
| Floor rim joists | 2×4 at 8 feet | 2 | Long sides of floor frame |
| Floor decking | 1/2-inch plywood at 4×8 | 2 | Full sheets |
| Wall studs | 2×4 at 48 inches | 8 | Front and back walls |
| Wall studs | 2×4 at 36 inches | 6 | Side walls |
| Top plates | 2×4 at 8 feet | 2 | Long walls |
| Top plates | 2×4 at 45 inches | 2 | Short walls |
| Roof rafters | 2×4 at 54 inches | 5 | Allow for 6-inch overhang each end |
| Ridge board | 2×4 at 8 feet | 1 | |
| Nest box back | 1/2-inch plywood at 18×24 | 1 | |
| Nest box dividers | 1/2-inch plywood at 12×18 | 3 | Create 4 individual boxes |
| Roost bars | 2-inch dowel at 45 inches | 2 | Or 2×4 with rounded top edge |
Building Sequence
Step 1: Site Preparation
Choose a location with good drainage, some shade from afternoon sun in hot climates, and predator risk assessment. A coop that sits in a low spot accumulates water under and around it, accelerating rot and creating muddy, unhealthy conditions.
Level the site. If building on skids, the skids must be on level ground or shimmed level. If building on posts, posts must be cut to length to achieve a level floor.
Decide on your foundation approach:
- Skids: Two 4×4 or 4×6 pressure treated skids running the 8-foot length of the coop. Simple, portable, adequate for most situations.
- Posts: Four 4×4 PT posts at the corners, set 12 inches into the ground. More permanent, better for uneven terrain.
- Concrete blocks: Solid concrete blocks at each corner and midspan. Simple, no digging, easily adjusted.
Step 2: Build the Floor Frame
Assemble the floor frame from 2×4 lumber: two 8-foot rim joists and five 45-inch cross joists spaced 16 inches on center. Fasten with 3-inch exterior screws and construction adhesive at each joint.
Set the floor frame on your skids, posts, or blocks. Check for level in both directions. Shim as needed.
Attach the two sheets of 1/2-inch plywood to the floor frame with 1.5-inch exterior screws every 8 inches around the perimeter and every 12 inches on interior joists.
Install hardware cloth across the underside of the floor frame before attaching the floor decking if you want an alternative to a plywood floor that allows droppings to fall through. This option works well in climates with good drainage and makes cleanout easier.
Step 3: Frame the Walls
Build each wall as a flat frame on the floor before raising it. Standard framing:
Front wall (access and pop door): Frame a 12×12-inch pop door opening in the lower front wall and a 24×48-inch access door opening beside it.
Back wall (clean and simple): No openings in the framing. Ventilation will be cut through the sheathing after framing is up.
Side walls: Frame ventilation openings 6 inches tall running the length of the wall near the top, below the roof line.
Raise and fasten each wall to the floor frame with 3-inch screws driven at 12-inch intervals into the floor rim joist. Brace walls plumb with temporary diagonal bracing until all four walls are up and sheathed.
Step 4: Sheathing and Ventilation
Attach exterior plywood sheathing to wall frames with 1.5-inch exterior screws every 8 inches on edges and 12 inches in the field.
Cut ventilation openings with a jigsaw after sheathing is installed. The long horizontal openings near the top of the side walls provide the most useful cross-ventilation. Size them at 6 inches tall by whatever length your wall allows.
Cover all ventilation openings with 1/2-inch hardware cloth, attached with poultry staples or 1/2-inch galvanized staples at 3-inch intervals. No gap between staples should allow a finger to pry the cloth back.
Step 5: Roof Framing and Roofing
A simple shed roof (single slope) is the easiest to build: one side of the coop is taller than the other, and the roof slopes from high side to low side. A 2-inch drop per foot of run is a standard pitch that sheds water well.
Cut rafters to length with the appropriate angle at each end. A speed square set to the roof pitch angle guides these cuts.
Install roofing over the rafter frame. Metal roofing panels are the most durable, weather-resistant, and long-lasting option for a coop. Overlap panels per manufacturer specification and use roofing screws with rubber washers at each attachment point.
Add a 6-inch overhang on the low (front) side to direct rain away from the pop door.
Step 6: Install Nest Boxes
Build four nest boxes inside the coop, positioned at one end against a wall. Each box is 12x12x12 inches minimum. A simple nest box structure consists of:
- A back board running the width of all four boxes
- A floor board
- Dividers creating individual stalls
- A front lip 4 to 6 inches high to retain nesting material
Hinge an exterior door over the nest box area to create an egg collection door accessible from outside the coop without entering. This is one of the highest-value features of a well-designed coop: you can collect eggs in seconds without disturbing the rest of the flock.
Step 7: Install Roosts
Mount two roost bars parallel to each other, 12 inches apart and 18 to 24 inches from the floor. The bars should be the highest sleeping surface in the coop, above the top of the nest boxes.
Use 2-inch diameter hardwood dowel or 2×4 lumber with the top edges rounded over with a router or hand plane. Hens grip a round or rounded surface better than a sharp 90-degree edge.
Step 8: Install Doors and Hardware
Hang the cleanout door with exterior hinges. Install a predator-proof latch: a locking carabiner through a hasp, a padlock through a hasp, or a dedicated predator-resistant slide bolt with a pin that prevents the bolt from being pushed back.
Install the pop door with a manual or automatic opener. A coop door opened and closed manually requires you to be at the coop at dusk and dawn every day. An automatic opener on a timer or light sensor is worth the $40 to $80 investment.
Apply exterior paint or sealer to all wood surfaces. The floor inside the coop benefits from a coat of linseed oil or exterior deck paint to make cleanout easier and extend the life of the plywood.
Step 9: Hardware Cloth Security Audit
Before you put any hens in the finished coop, do a systematic security audit:
Walk around the outside of the coop and examine every joint, every gap, and every transition from one material to another. Any gap larger than 1/2 inch is a potential entry point for weasels and mink. Any gap larger than 1 inch can admit larger predators over time.
Confirm the hardware cloth on all ventilation openings is attached at intervals no greater than 3 inches and that no edge is loose or pry-able.
Confirm every door has a secure latch that requires a two-step action to open. Raccoons can open single-action latches.
Total Project Time
For a builder with basic tool skills, plan:
- Day 1: Site prep, floor frame, floor decking
- Day 2: Wall framing, raising walls
- Day 3: Sheathing, ventilation openings
- Day 4: Roof framing and roofing
- Day 5: Nest boxes, roosts, doors, hardware
- Day 6: Hardware cloth, painting, finishing details
Six days of weekend work (or three full weekends) is a realistic estimate for a first coop build.
Recommended Tools and Materials
Circular saw 7-1/4 inch for framing cuts
Jigsaw for ventilation openings and curved cuts
Hardware cloth 1/2 inch 50-foot roll
Automatic chicken coop door opener
Exterior deck screws 3-inch 5lb box
For more on what your finished coop needs to do, see our chicken coop requirements guide and our backyard chickens beginners guide.