A pre-built coop big enough to walk inside costs $1,800 to $4,500 at most farm supply stores, but the same structure built from scratch runs $600 to $1,100 in lumber and hardware. Building an easy DIY walk in chicken coop over a weekend gives you full standing room for cleaning, a layout you actually want to maintain, and predator-proof construction the off-the-shelf kits skip. Six hens need about 24 square feet of indoor floor space and 60 square feet of attached run, which fits inside an 8×10 ft footprint.
Choosing the Right Size for Your Flock
Plan for 4 square feet of interior floor per standard hen and 10 square feet of run space. Six birds means a 6×4 ft coop with a 6×10 ft run attached. For 10 to 12 hens, scale up to an 8×6 coop with an 8×12 ft run. A walk-in design needs a minimum interior ceiling height of 6 ft 4 inches, which works for most adults without crouching.
Don’t undersize to save lumber. Overcrowded coops trigger pecking, feather loss, and disease outbreaks that wipe out half the flock in a season. Going one size bigger costs an extra $80 to $150 in materials and pays for itself the first year you don’t lose hens.
Materials List for an 8×6 Walk-In Coop
This parts list builds a sturdy coop with predator-proof framing and good ventilation. Total cost runs $750 to $950 depending on local lumber prices and whether you reclaim any siding or roofing.
- (14) 2×4 x 8 ft pressure-treated framing lumber, $7 each
- (8) 2×4 x 10 ft pressure-treated, $9 each
- (6) sheets 1/2 inch plywood for siding, $35 each
- (3) sheets T1-11 siding panels for the back wall, $42 each
- (4) 8 ft corrugated metal roofing panels, $22 each
- 1 roll 1/2 inch hardware cloth, 4 ft x 100 ft, $145
- 1 box 3 inch deck screws (5 lb), $35
- 1 box 1.5 inch poultry staples, $12
- (2) hinges and a latch for the people door, $25
- (1) sliding pop door with automatic opener, $130 (optional but worth it)
Site Selection and Foundation
Pick a spot with morning sun and afternoon shade, slightly sloped for drainage, and at least 20 ft from your house and any neighbor’s property line. Most municipalities require a permit for any structure over 100 sq ft, so check local zoning before you cut the first board.
For a quick and durable foundation, set six concrete deck blocks (Dek-Block at $8 each from Home Depot) on a level gravel pad. Skip pouring a concrete slab unless you live in an area with bears or burrowing predators. A skirt of hardware cloth extending 12 inches out from the base, buried 6 inches deep, stops foxes and raccoons from digging in.
Framing the Walls and Roof
Build the four walls flat on the ground using 2x4s on 24-inch centers. The back wall stands 7 ft tall and the front 7 ft 6 inches, creating a 6-inch slope for the shed-style roof to shed rain. Frame in a 32-inch people door on the long side and a 12×14 inch pop door on the run-facing wall.
Stand each wall in place, plumb with a 4 ft level, and screw the corner studs together. Top plate the entire structure with another 2×4 on edge to lock the walls in alignment. Run 2×4 rafters from front to back on 24-inch centers, sloped to the back wall, and sheath with the metal roofing panels using 1-inch hex-head screws with rubber washers.
Predator-Proofing the Build
Chicken wire keeps chickens in but stops nothing else. Use 1/2 inch hardware cloth for every opening, including windows, vents, and the apron skirt. Raccoons can twist standard hex netting open with their hands in under a minute. Hardware cloth at 19 gauge resists everything short of a bear.
Latches matter as much as fencing. Use two-step latches like the Snug Cottage Hardware barrel bolt ($18) on every door, since raccoons routinely defeat single-action latches. Add a spring hook on the pop door and run an automatic door opener like the ChickenGuard Premium ($170) that closes at dusk on a light sensor.
Interior Layout
Plan the inside before you close in the walls. Roost bars made from 2×4 laid flat (broad side up) keep hens from frostbite in winter by letting them cover their feet. Mount roosts 24 inches off the floor with at least 12 inches of bar per bird. Slope a poop board underneath at a 15-degree angle for easy scraping.
Nest boxes need 1 box per 4 hens, mounted lower than the roosts (about 18 inches off the floor) so birds prefer roosting over sleeping in nests. Build them 12x12x12 inches with a sloped lid that opens from outside for egg collection without entering. Line with pine shavings, not cedar, since cedar oils damage chicken respiratory systems.
Ventilation Without Drafts
Chickens generate huge amounts of moisture and ammonia overnight. Cut a continuous vent strip along the top of both long walls, 4 inches tall by the full wall length, and cover with hardware cloth. Position vents above roost height so warm humid air escapes but cold air doesn’t blow directly on the birds.
Add two operable windows (cheap aluminum sliders run $40 each at salvage yards) on opposite walls for summer cross-breeze. Cover the open windows with hardware cloth permanently mounted to the frame.
Run Construction and Finishing Touches
Attach the run frame directly to the coop using 2x4s on 4 ft centers, ending in a hinged maintenance door tall enough to walk through. Wrap the entire run in 1/2 inch hardware cloth, including the roof, to keep hawks and owls out. A simple corrugated panel roof over part of the run gives shade and rain protection.
Inside the coop, paint walls with a white moisture-resistant primer like Zinsser Bulls Eye 1-2-3 ($24 per gallon) so droppings wipe off and the interior stays bright. A 6-mil vinyl floor liner over the plywood deck makes annual deep cleaning take 30 minutes instead of 3 hours. Bed the floor with pine shavings 4 inches deep and use the deep-litter method for the simplest year-round care.
