A hay shed and a machinery shed solve two completely different problems, even though building farm sheds in Victoria often starts with buyers treating them as the same thing. One needs airflow and loader access for stacking bales; the other needs clearance height for whatever gets bought next season.
Trusteel has built both, along with grain storage and general farm structures, across Victoria since 1976, and getting the type right before sizing anything else is where most farm shed projects should start.
Key Takeaways
- Farm sheds on Farming Zone land may not require a planning permit in Victoria, but a building permit is always required under the Building Act 1993 (Vic).
- Rectangular Hollow Section (RHS) structural steel frames outperform C-section frames in rural conditions where wind exposure, equipment loads, and service life matter.
- Bushfire Attack Level (BAL) ratings affect material selection and cost on many Victorian farming properties.
- A registered builder can manage design, permits, fabrication, and concreting as a single engagement, removing the need to coordinate multiple contractors.
What Is a Farm Shed (and What Makes It Different from a General Rural Shed)
A farm shed serves an active farming operation: housing machinery, storing hay, handling grain, or sheltering livestock. It’s not a residential garage or a general rural storage structure.
That distinction matters in practice. It determines how the shed is classified under the National Construction Code, which planning zone rules apply, and the structural loads it needs to carry. A shed holding a harvester or several tonnes of hay needs very different engineering to a backyard storage structure, so getting the classification right from the start avoids permit complications down the track.
Types of Farm Sheds and What Each One Is Used For
The primary design driver for each shed type is the specific function it needs to perform. Size, roof pitch, bay configuration, and door placement all follow from that function.
| Shed Type | Primary Design Driver | Key Features |
| Hay Sheds | Ventilation and access | Open-front or semi-enclosed for airflow that prevents heating and spoiling; roof pitch and bay depth sized for efficient bale stacking and loader access |
| Machinery Sheds | Largest piece of equipment housed | Clearance height, bay width, and door configuration sized to the full operating envelope of tractors, headers, and implements |
| Grain Storage | Floor load and sealing | Prioritises floor load capacity, sealing against moisture, and vermin resistance |
| Farm Storage | Flexibility | Multi-bay structures serving mixed uses |
| Barns | Combined storage and livestock shelter | Raised-roof or American barn configurations with ridge ventilation; can include stalls, tack rooms, and open storage bays |
Hay Sheds
A hay shed is designed around ventilation and access. Open-front or semi-enclosed configurations allow airflow that prevents hay from heating and spoiling. Roof pitch and bay depth are sized to stack bales efficiently while keeping the structure accessible to loaders.
Machinery Sheds
Machinery sheds are determined by the largest piece of equipment they need to house. Clearance height, bay width, and door configuration must accommodate the full operating envelope of tractors, headers, and implements.
What we see most often on rural properties is that machinery sheds are undersized at the planning stage, with insufficient height for equipment purchased after the shed is built.
Grain Storage and Farm Storage
Grain storage sheds prioritise floor load capacity, sealing against moisture, and vermin resistance. General farm storage sheds serve mixed uses and are typically multi-bay structures sized for flexibility.
Barns
A barn structure suits properties that combine storage with livestock shelter. Raised-roof barn and American barn configurations provide natural ventilation at the ridge and can be configured with stalls, tack rooms, and open storage bays within the one structure.
Farm Shed Sizing: How to Work Out What You Actually Need
Start with the largest item the shed needs to house. Its width and height set the minimum bay dimensions. Everything else builds from there.
Key variables to work through:
- The number of items stored simultaneously
- Whether vehicles need to drive through or turn around inside
- Access door width and height for machinery entry
- Allowance for future equipment or use changes
A single-bay shed suits a medium tractor and basic implements. A four-bay shed provides room for mixed equipment, hay storage, and a separate workshop or storage area. A 4 bay configuration is one of the most common rural shed layouts because it balances footprint against versatility.
Many farmers find it worth allowing more space than current equipment requires, since usable storage tends to fill faster than expected.
RHS Structural Steel Frames: Why They Matter on Rural and Farm Properties
Rectangular Hollow Section (RHS) frames are closed-section steel. They resist torsional loads from multiple directions. C-section frames are open-channel steel: lighter, cheaper to produce, and less able to handle the variable loads that occur in rural conditions.
The difference shows over time. C-section channels trap moisture, debris, and pest material inside the open profile. RHS sections do not. On harsh rural properties with high wind exposure, heavy equipment, and 30-plus year service expectations, that difference is significant.
| Feature | RHS Frame | C-Section Frame |
| Section type | Closed hollow section | Open channel |
| Torsional strength | High | Moderate |
| Moisture and debris trapping | No | Yes |
| Typical application | Rural, commercial, livestock | Light residential storage |
| Relative cost | Higher | Lower |
| Service life expectation | 30+ years | 10 to 20 years |
C-section frames are adequate for a light residential garage or a domestic storage structure. For a working farm shed in regional Australia, where the frame carries real loads over decades, RHS structural steel is the appropriate specification.
Trusteel builds farm shed frames in RHS as standard. For wide clear-span roof structures, such as machinery bays and hay sheds where internal columns would interrupt usable floor space, Trusteel also specifies Open Web Trusses (OWT) and Universal Beam (UB) sections engineered to the shed’s actual span. The cost is higher than C-section. What you are paying for is a structure engineered to your specific span and load requirements, not a one-size-fits-all frame.
Victorian Planning Permits for Farm Sheds: What the Rules Actually Require
Two separate approvals apply to farm sheds in Victoria: a planning permit and a building permit. They come from two separate authorities and cover different things. Many property owners conflate them, which creates delays.
Planning Permits
Farm sheds on land zoned Farming Zone (FZ) or Rural Activity Zone (RAZ) may be exempt from a planning permit under Clauses 35.07-4 and 35.08-4 of the Victoria Planning Provisions, provided the shed meets specific floor area and siting conditions. The exemption varies by zone and by council overlay. Check the planning provisions that apply to your specific title before assuming an exemption applies.
Building Permits
A planning permit exemption does not remove the obligation to obtain a building permit. Agricultural sheds used for farming operations are classified as Class 8 buildings under the National Construction Code. A registered building practitioner must be engaged for structures above prescribed thresholds under the Building Regulations 2018 (Vic).
Building without the correct permit creates real problems: stop-work orders, complications with property insurance, and issues when the property is sold. The security of a correctly permitted structure protects the asset’s value.
Trusteel is a registered Victorian Building Authority (VBA) builder. The permit process is managed as part of every full-build engagement. You do not need a separate permit agent or builder to satisfy this requirement.
BAL Zones and Bushfire Considerations for Victorian Farm Sheds
Many Victorian farming properties sit within or adjacent to Bushfire Management Overlay (BMO) areas or carry a Bushfire Attack Level (BAL) rating. A BAL rating changes the materials and construction methods required for any structure on the property.
Higher ratings, including BAL-29 and BAL-FZ, require specific cladding specifications, construction detailing, and in some cases ember-resistant design features. These requirements affect material selection, cost, and lead time on fabrication.
Confirm your property’s BAL rating through the Planning Property Report on planning.vic.gov.au before requesting a quote. Trusteel designs to the applicable BAL rating as part of the planning and permit process.
Farm Shed Cost Overview: What Affects the Price in Victoria
Farm shed pricing in Victoria varies significantly based on several factors. A flat price list is not useful here because the variables are too significant.
The key cost drivers are:
- Floor area and ridge height: Larger and taller structures cost more in both material and engineering.
- Frame specification: RHS frames cost more than C-section frames upfront. They cost less over the life of the structure.
- Cladding type and gauge: Heavier gauge cladding improves wind and impact resistance.
- Access doors: Roller doors, sliding doors, and bi-fold doors vary considerably in price and lead time.
- Concreting and site preparation: Sloped sites, poor soil conditions, or remote access add to the concrete cost.
- BAL and permit requirements: Bushfire zone specifications and council permit fees add to the total project cost.
As an indicative guide, a hay shed or open-front storage shed typically starts from around $25,000. A machinery shed, which needs greater clear span and vehicle access, starts from around $60,000. A fully enclosed farm storage shed starts from around $80,000. These figures are indicative only. Site access, BAL requirements, and specification changes affect the final price.
Explore sizes and configurations for your own property with Trusteel’s Shed Designer.
How Trusteel Designs and Builds Farm Sheds Across Victoria
What the Process Involves
The build process runs from initial consultation through to handover as a single engagement. Trusteel handles design, engineering, permit applications, fabrication, concreting, and installation.
The steps in order:
- Initial consultation and site assessment
- Design and structural engineering
- Planning permit application (where required)
- Building permit application
- Fabrication at Trusteel’s Melbourne facility
- Site preparation and concreting
- Delivery and installation
You do not need to coordinate a separate concreter, structural engineer, or permit agent. All of that is managed within the one engagement.
What You Get at Handover
At project completion, you receive a fully permitted, VBA-compliant structure built to the specification agreed at design stage. The shed is ready for immediate use. Documentation for the building permit is provided for your records, which matters for insurance and any future property transaction.
Farm sheds are customisable at the design stage, covering bay count, height, cladding colour, door configuration, and BAL specification. Changes are straightforward to accommodate before fabrication begins and significantly more costly after.
Talk to Trusteel about your farm shed.
Frequently Asked Questions
Do I need a planning permit for a farm shed in Victoria?
Not always. Farm sheds on Farming Zone or Rural Activity Zone land may be exempt from a planning permit under the Victoria Planning Provisions, subject to floor area and siting conditions. The exemption depends on your specific zone, council, and any overlays on your title. A building permit is always required, regardless of whether a planning permit is needed.
What is the difference between a planning permit and a building permit for a farm shed?
A planning permit is issued by your local council and relates to land use and zoning. A building permit is issued under the Building Act 1993 (Vic) and relates to structural compliance and construction standards. They are separate approvals from separate authorities. Both may apply to your project, or only one may apply, depending on your zone and shed size.
How much does a farm shed cost in Victoria?
Cost depends on size, frame specification, cladding, site conditions, and permit requirements. A hay shed or open-front storage shed typically starts from around $25,000, a machinery shed from around $60,000, and a fully enclosed farm storage shed from around $80,000. BAL zone requirements and site access conditions can add to these figures. Contact Trusteel for a site-specific quote based on your actual requirements.
Why does Trusteel use RHS frames instead of C-section steel?
Rectangular Hollow Section frames are closed-section steel, which means they resist loads from multiple directions and do not trap moisture inside the profile the way open C-section channels do. On a working farm property, where the shed carries real loads for decades, RHS delivers a longer service life. C-section frames are adequate for light residential storage. For rural and agricultural structures, RHS is the appropriate specification.
Can Trusteel manage the permits, concreting, and construction as one package?
Yes. Trusteel is a registered VBA builder and manages planning permits, building permits, concrete, fabrication, and installation as a single engagement. You are not required to coordinate separate contractors or engage a separate permit agent. This applies to full builds across Victoria.