A dairy shed is the most complex and specialised agricultural building you’ll ever design. It’s not just a roof over cows — it’s a production facility where layout, flow, hygiene, and efficiency directly affect your bottom line every single milking.
Dairy Shed Types
Herringbone
The traditional Australian dairy layout. Cows stand at a 30-degree angle on a raised platform, milked from below in a central pit. Efficient for herds of 100–400 cows. Familiar to most dairy workers. Typical pit width: 2m. Platform depth: 1.5m per row. Length scales with the number of bail positions.
Rotary (Turntable)
Cows step onto a rotating platform and are milked as it turns. Most efficient for large herds (300+ cows). Higher capital cost but lower labour per cow. Requires a circular or octagonal building envelope — typically 20m–30m diameter.
Swing-Over
Similar to herringbone but clusters swing from one side to the other, reducing the number of cups required. Good for smaller herds wanting to reduce equipment costs.
Flat-Barn / Walk-Through
Simpler layout where cows walk through on a flat floor and are milked from the side. Common for very small herds or goat dairies. Lower capital cost but higher labour per cow.
Dairy Shed Layout Essentials
- Cow flow — one-way traffic from holding yard → milking platform → exit yard. No bottlenecks, no blind corners, no reversing. Calm cows milk better
- Holding yard — sized for your peak herd (5-7 m² per cow). Covered for shade and rain protection. Concrete floor with fall to drainage. Backing gate for crowd management
- Vat room — clean, separate area for the milk vat (bulk tank). Temperature-controlled, easy access for tanker pickup. Must meet Dairy Australia food safety requirements
- Plant room — vacuum pump, wash system, hot water, compressor. Located for short pipe runs to the milking platform. Noise considerations for cow and worker comfort
- Effluent — dairy sheds produce large volumes of washdown water and manure. Effluent management plan is required — collection sump, treatment (pond, irrigation), and council approval
Steel Frame Advantages for Dairies
Steel portal frame construction suits dairy sheds because:
- Clear spans — no columns interfering with cow flow, platform layout, or machinery placement
- Hygiene — steel and COLORBOND® are easy to clean and don’t harbour bacteria like timber
- Ventilation — open ridge, adjustable wall panels, and large openings for maximum airflow. Critical for cow comfort and reducing mastitis risk
- Durability — resistant to the corrosive environment of dairy operations (ammonia, moisture, washdown chemicals)
- Speed — faster construction means less time disrupting milking operations during upgrades
Dairy Shed Cost Guide
Dairy sheds are project-priced based on configuration, but indicative ranges for the building shell only:
- Small herringbone (12-aside, 15m x 24m): $40,000–$65,000 kit supply
- Medium herringbone (20-aside, 18m x 30m): $60,000–$95,000 kit supply
- Rotary platform shed (25m diameter): $80,000–$130,000 kit supply
- Covered holding yard (18m x 30m, open sides): $30,000–$50,000 kit supply
These are building shell prices — frame, cladding, engineering. Milking equipment, concrete, plumbing, electrical, and vat room fit-out are additional (and typically 3-5x the building shell cost). Design the building shell online or call 0488 510 550 to discuss your dairy project.
See also: Dairy Sheds | Farm Sheds | Livestock Sheds
