4×8 chicken coop lumber list

The single decision that drives 4×8 coop cost more than any other isn't the framing lumber — it's the floor sheathing. Skip OSB; it swells, delaminates, and disintegrates inside two seasons under chicken bedding. Build to a basic-but-complete spec at $350–450 in 2026 lumber prices: ½-inch CDX floor, T1-11 siding, ¼-inch hardware cloth on every opening, metal-panel roof. Holds 6–8 standard hens per the coop size + run calculator.

The materials table below shows $689 at full big-box retail. The $350–450 number assumes the moves any second-time builder makes — scrap-lumber human door and nest boxes, T1-11 from a lumberyard direct (often 30% under big-box), asphalt-roll roofing if your climate forgives it. Build time runs 20–30 hours for an intermediate-skilled builder; the framing is one weekend, the finishing is the next.

Complete materials list

Category	Item	Qty	Cost
Framing	2×4×8 ft pressure-treated (floor frame)	5	$45
Framing	2×4×8 ft SPF (wall studs)	16	$80
Framing	2×6×8 ft SPF (roof rafters + ridge)	6	$60
Sheathing	½-in × 4×8 CDX plywood (floor)	1	$45
Sheathing	⅜-in × 4×8 T1-11 siding (walls)	5	$135
Sheathing	½-in × 4×8 CDX plywood (roof deck)	1	$45
Roofing	Corrugated metal panels (3 ft × 8 ft)	2	$50
Roofing	Roofing screws + rubber gaskets	1 box	$10
Roofing	Drip edge flashing (10 ft)	2	$20
Hardware cloth	¼-in × 36-in × 25-ft galvanized roll	1	$70
Hardware cloth	Pneumatic staples (T-50 box)	1	$8
Doors	Pop-door kit (sliding wood)	1	$25
Doors	Human door — built from scrap T1-11	—	$0
Doors	Door hinges (3-pack)	1	$8
Doors	Two-step latch (carabiner + slide bolt)	1	$10
Nest + roost	1×4×6 ft roost rail (planed pine)	1	$8
Nest + roost	Nest box materials (built from scrap)	—	$0
Fasteners	3-in exterior screws (5-lb box)	1	$30
Fasteners	1¼-in exterior screws (1-lb box)	1	$10
Finishing	Exterior latex caulk (2 tubes)	2	$10
Finishing	Exterior latex paint (1 gallon)	1	$30
Estimated total			$689

Prices are 2026 retail at standard big-box stores and shift fast with lumber-market swings. The $689 line-item total is the worst-case ceiling. Realistic out-of-pocket lands at $350–450 once you reuse scrap lumber for the human door and nest boxes, buy T1-11 siding from a lumberyard direct, and skip the metal-panel roof for $25 in asphalt-roll roofing if your climate allows. The build-vs-buy line crosses somewhere around $450 — below that, prefab coops on Amazon and Tractor Supply look tempting on price, but the framing is usually 1×2 stapled together and the hardware cloth is chicken wire. The math doesn't favor the prefab once you replace both within 18 months.

Why these dimensions, and where to skip pressure-treated

Buy stud-grade 2×4s, not premium. The coop doesn't care about straight-grain aesthetics; it cares about predator exclusion and ventilation, neither of which the lumber stamp affects. The one place to spend up is the floor frame.

2×4×8 pressure-treated (floor frame, 5 pieces): Two long rails (96 inches) plus three joists (45 inches each, cut from the spare 8-footers). Pressure-treated here because the floor frame sits in the ground-contact moisture-absorption zone — standard SPF rots within five years even on skids.
2×4×8 SPF (wall studs, 16 pieces): Eight per long wall, six per short wall, plus headers and trimmers for door and window openings. Skip pressure-treated above the floor frame — birds peck at the resin, and standard SPF behind painted T1-11 lasts a decade in a vented coop anyway. 16-inch on-center spacing.
2×6×8 SPF (rafters + ridge, 6 pieces): Four rafter pairs at 24-inch on center across the 8-foot span, plus a ridge board and a header. 2×6 instead of 2×4 because the rafter span and snow load want the heavier dimension — this is climate-dependent, but 2×6 is cheap insurance even in mild climates.
Plywood quantities:1 sheet ½-inch CDX for the floor, 5 sheets ⅜-inch T1-11 for the four walls plus small pieces for shutters and nest box, 1 sheet ½-inch CDX for the roof deck. Don't cut corners on floor sheathing — the FAQs cover OSB; the short version is don't.

Why ¼-inch hardware cloth, everywhere

¼-inch galvanized hardware cloth is the only defensible default. Chicken wire keeps chickens in; it does not keep raccoons, weasels, or rats out. ½-inch hardware cloth still lets weasels through. Use ¼-inch on every vent, window, run side, and run top, full stop.

The 25-foot × 36-inch roll covers the entire predator-rated surface on a 4×8 with margin:

Two eyebrow vents (4×12 inches each at gable ends) → ~1 sq ft total
One floor-line low intake (6×24 inches) → 1 sq ft
One window screen (12×18 inches) → 1.5 sq ft
Pop-door covering for night closure → 1.5 sq ft
Run apron (24-in skirt extending outward from run base) → ~50 sq ft for a 12×12 run perimeter

Total: ~55 sq ft. The roll provides 75 sq ft of usable cloth — enough for the coop and run with margin for waste. If your run is larger than 12×12, buy a second roll for the apron and don't try to stretch the first one. A short apron is the same as no apron once something starts digging.

What this list leaves out (run, foundation)

The list above is the coop only. The run is a separate build with its own materials, and the foundation depends on whether the coop sits on a slab, piers, or skids:

Run framing: 4×4 corner posts + 2×4 horizontal rails. ~$80 for a 12×12 run.
Run hardware cloth: wall sides and top, plus apron. ~$120 for full 12×12 enclosure with covered top.
Foundation:for a 4×8, I'd default to pressure-treated 4×4 skids with leveling shims (~$30 total) over the four-pier setup ($100). Piers are over-engineered for a 200-lb structure on skids that move with the seasons anyway, and skids let you drag the coop to fresh ground every couple of years.

Run + foundation typically adds $200–300 to the project total. Full coop + run + foundation runs ~$550–750 for a complete predator-rated 4×8 setup.

Tools you'll need (and the first-coop trap)

Circular saw (or table saw if you have one)
Drill + driver bit set
Tape measure, framing square, pencil
Level (4-foot beam level minimum)
Tin snips (for hardware cloth)
Staple gun (T-50 or equivalent)
Hammer (for nails on metal flashing, occasional adjustments)
Caulk gun
Sawhorses (2)

If you don't already own these, tools add $250–400. That's the first-coop trap — a $400 lumber list looks like a great deal against a $600 prefab until you remember the prefab includes the tools-as-zero. Honest accounting on a true first build is closer to $700–850 all-in. Second build is back down to $400.

Build order — and the one step worth slowing down for

Foundation (skids or deck piers), level
Floor frame (pressure-treated 2×4s, 16-in OC joists)
Floor decking (½-in CDX plywood)
Wall framing (4 walls assembled flat, then raised)
Roof rafters + ridge board
Roof decking + drip edge + corrugated panels
Wall siding (T1-11 panels)
Vent cuts (eyebrow vents, low intake, window) — see the DIY retrofit section of best chicken coop ventilation
Hardware cloth on every opening (¼-inch, T-50 staples)
Pop-door + human door + latches (predator-rated)
Internal: nest boxes (3 for 6–8 hens), roost rail
Caulk, paint, finishing

Step 8 is the one place to slow down. Wall siding goes on fast and a crooked stud is forgivable; a botched eyebrow vent leaks weather and puts a draft on the roost for the life of the coop. Measure the vent cuts twice and back-frame the openings before the siding goes up so the hardware cloth attaches to clean wood, not a ragged plywood edge.

Common questions

How much does a 4×8 chicken coop cost to build?

About $350–450 in materials at 2026 lumber prices for a basic-but-complete 4×8 coop with proper ventilation, ¼-inch hardware cloth, and metal-panel roof. Higher-end builds with cedar siding, premium doors, and electric run by professional standards can hit $700–1000. The lumber list below is for the cost-conscious version that doesn't compromise on flock health (vent area, predator exclusion, weatherproofing).

What lumber dimensions should I use for the framing?

2×4s for the floor frame and wall studs (16-inch on center). 2×3s acceptable for non-load-bearing wall framing if cost matters. 2×6s for the roof rafters and ridge board on a 4×8 (the longer span and snow load benefit from the heavier dimension). Pressure-treated 2×4s for the floor frame ground contact; standard SPF for everything else. Don't substitute 2×3s for the floor frame; the 4×8 plywood floor wants 2×4 minimum joist depth.

What plywood thickness for a coop?

½-inch CDX plywood for the floor (rated for moisture; chickens generate moisture even with deep-litter). ⅜-inch CDX or T1-11 siding for the walls. ½-inch CDX for the roof deck, covered with rolled roofing or corrugated metal panels. Don't use OSB (oriented strand board) — it swells in moisture and disintegrates within 2–3 years on a coop floor.

Why do I need ¼-inch hardware cloth instead of chicken wire?

Chicken wire keeps chickens contained, not predators out. Raccoons rip chicken wire; weasels squeeze through ½-inch openings; rats chew through it. Use ¼-inch galvanized hardware cloth on every vent, window, run side, and run top. The cost difference vs ½-inch chicken wire is $3–6 per square foot — small relative to the predator-protection upgrade. Skip ½-inch hardware cloth too unless ½-inch is already on hand; ¼-inch is the conservative default.

Do I need pressure-treated lumber for the whole coop?

No, just the parts that contact ground or sit in the moisture-absorption zone. Pressure-treated 2×4s for the floor frame; pressure-treated 4×4 corner posts if the coop sits on dirt instead of a slab; pressure-treated bottom plate where walls meet the floor. Standard SPF (spruce/pine/fir) is fine for wall studs, rafters, and siding. Pressure-treated everywhere is overkill and adds 30–40% to lumber cost without flock benefit.

By Jimmy L Wu. Reviewed 2026-05-02. Material costs reflect 2026 retail at standard big-box and farm-supply stores; regional variation and lumber-market swings are significant, so treat the $350–450 figure as a starting estimate, not a quote. Lumber dimensions, framing spacing, and plywood specs follow standard residential carpentry practice. Hardware-cloth predator-exclusion sizing reflects practitioner consensus across Cooperative Extension publications and experienced backyard builders. Not veterinary advice — for sick birds or any animal-health emergency, consult an avian or livestock veterinarian.