Enqor is an agricultural steel building contractor in Leamington, Ontario. We design, fabricate, and construct storage barns, processing facilities, and service buildings for farms across Windsor-Essex County and Southwestern Ontario, with engineering, steel fabrication, and construction delivered under one contract. We handle agricultural building projects from first concept through final inspection.
An agricultural steel building is a pre-engineered structure with a steel frame and metal cladding, built to serve a specific farm function. Metal farm buildings cover four jobs on most farm operations: storage for crops and equipment, processing space for packing and grading, service buildings for maintenance and staff, and livestock shelter. Each type carries different span, floor, drainage, and climate requirements. Choosing the wrong building for the job costs more to correct than it costs to plan properly.
What Is an Agricultural Steel Building?
An agricultural steel building uses a structural steel frame, steel purlins and girts, and metal or insulated panel cladding. The frame carries the roof and wall loads, so interior columns become optional. This produces clear-span interiors of 60 to 150 feet or more without posts breaking up the floor.
Most agricultural metal buildings are pre-engineered. The frame is designed for one site, then cut, punched, and marked in the shop before it ships. Field crews assemble a kit of parts rather than fabricating on site.
Three characteristics make steel structures the standard for farm buildings:
- Clear-span interiors allow equipment to turn, stack, and load without working around posts
- Weather-resistant steel frames resist rot, insect damage, and the moisture cycling that degrades wood-frame barns
- Bolted frame connections make future expansion a matter of removing an endwall rather than rebuilding
Farm buildings also face loads that other structures do not. Bulk crop storage pushes laterally against walls. Forklifts and telehandlers concentrate loads on slabs. Wash-down areas saturate floors daily. The building has to be engineered for the work happening inside it. Custom steel buildings start from those loads and from the agricultural needs of the operation rather than from a catalogue footprint.
Storage Buildings for Crops, Equipment, and Inputs
Storage is the most common agricultural build we are asked for, and the most commonly under-specified. Steel storage buildings hold crops, equipment, and inputs, and each of those three uses sets different requirements for the frame, the slab, and the envelope.
Crop and Produce Storage
Produce storage requires temperature stability, air movement, and a vapour barrier that stops condensation from forming on the underside of the roof deck. Insulated metal panels handle this better than batt insulation, which sags and traps moisture over time. Floor slabs need to be sealed and sloped if the room will be washed.
Crop storage requirements change with the commodity. Bulk grain storage pushes outward against the walls, so the frame and the slab edge have to be rated for that lateral pressure. Packed produce puts almost no load on the walls but demands tight temperature and humidity control instead. Hay storage runs the opposite way again, needing ridge and eave ventilation to carry moisture out of the stack and clearance from ignition sources. Sizing one building for two of these uses usually means paying for capacity you never use in one half of the structure.
Whether to insulate is a separate decision from how to frame. Steel farm buildings holding dry commodities often need no insulation at all, while anything held at temperature needs a full panel envelope from the start. Adding insulation to a bare frame later costs more than specifying it at design.
Enqor is the design-build division of South Essex Fabricating. On sites where SEF delivers the growing structure, Enqor delivers the warehouse, processing, and housing scope. That is the case on several of the projects below.
Enqor built a 125,000 sq ft warehouse for Nature Fresh Farms in Leamington and a 75,000 sq ft warehouse for JPI Farms, also in Leamington. Both were sized for pallet throughput rather than square footage alone, because rack layout and dock count determine how much product a storage building actually moves per day. A 31,125 sq ft warehouse expansion for Prism Farms in Leamington shows the same principle at smaller scale.
Equipment and Machinery Storage
Equipment storage buildings live or die on door dimensions and clear height. A combine with the header folded stands 13 to 16 feet tall depending on the model, which puts the door opening at 16 to 18 feet. Folding tillage tools in transport position can reach 17 feet and push that requirement higher again if they share the building. A tractor with duals or a front-mounted loader adds width and height that the base machine spec does not show. Measure the largest machine you own, add the machine you plan to buy, then size the opening.
Clear height also affects insurance and future use. A 24 foot eave lets you convert an equipment shed into racked storage later. A 16 foot eave locks the building into one use for its service life.
Fertilizers and Chemical Storage
Fertilizer and crop protection storage carries containment, ventilation, and separation requirements. Fertilizer is corrosive to bare steel, so these rooms need coated fasteners, protected column bases, and often a physical separation from the main structure. Containment curbs and floor drainage should be designed into the slab, not cut in afterward.
Processing Facilities: Packing, Grading, and Logistics
Processing buildings are the most technically demanding agricultural structures we build, because they combine food safety requirements with production flow.
A packing or grading facility needs washable wall and ceiling surfaces. It needs floor drainage sized for daily sanitation and refrigeration that holds temperature under door-open conditions. The layout also has to keep incoming product separated from outgoing product. Insulated metal panel construction meets most of these requirements in a single system, which is why it dominates food processing builds.
Three layout decisions drive long-term efficiency:
• Dock configuration and count, which sets your receiving and shipping capacity
• Ceiling height in the refrigerated envelope, which sets pallet stacking and refrigeration volume
• Staff flow separation, which keeps sanitation zones intact and simplifies audits
Building a processing facility to a general contractor’s standard warehouse spec is the most expensive mistake we see in agricultural construction. Retrofitting drainage, panel walls, and refrigeration into a completed shell costs several times what it costs to build them in.
Service Buildings: Shops, Maintenance Bays, and Worker Housing
Service buildings support the operation rather than the crop.
Maintenance shops need overhead crane capacity, or at least a frame designed to accept one later. They also need floor drainage, compressed air rough-ins, and enough bay depth to pull a full implement inside with the door closed. Heated shop space in Southwestern Ontario extends the repair season and gives the building year-round use instead of leaving it idle through winter.
Worker housing is a distinct build type with its own rules. A dwelling unit on a farm is not a farm building under the Ontario Building Code, so worker housing does not get the relaxations that apply to storage barns and equipment sheds. It must meet full Ontario Building Code requirements and pass local public health inspection before occupancy. Enqor has built a 17,500 sq ft worker housing facility for Jack’s Organics in Amherstburg. We also built a 2,400 sq ft housing facility for Prism Farms in Leamington and a 9,360 sq ft worker housing facility for Vine Fresh Acres. Other service work includes a service building for EZ Grow Farms in Langton and commercial office space for Flavor Fresh Farms in Leamington.
Livestock Shelters and Barn Structures
A steel barn built for animals answers to air quality before anything else. Livestock shelter design starts with ventilation rate, then works outward to roof pitch, sidewall height, and opening placement, because ammonia and humidity build up fast in a sealed structure. A roof slope of 4:12 supports buoyancy-driven air movement, while slopes under 3:12 slow it and allow moisture and gas to collect. Natural ventilation through ridge vents and adjustable curtain sidewalls covers most of the year, with mechanical ventilation added where stocking density or climate control requires it.
Interior surfaces in a livestock barn take abuse that storage buildings never see. Manure is corrosive, animals contact the walls, and wash-down is routine. Coated liner panels, protected column bases, and a properly sloped and drained floor extend the service life of the structure. Clear-span framing also matters more here than in most agricultural buildings, since pen layouts, alleys, and feed lanes get reconfigured over the life of the barn and interior posts limit what you can change.
Livestock buildings also carry siting rules that other farm structures do not. Minimum Distance Separation sets how far a livestock barn must sit from neighbouring land uses, and municipalities require an MDS data sheet with the permit application along with a signed declaration stating whether the structure will house livestock. Liquid and solid manure storage carries further requirements under the Nutrient Management Act. Both belong in the site plan before the building is designed, because MDS can move the building.
Steel Compared to Wood-Frame and Fabric Buildings
| Factor | Steel | Wood-frame | Fabric |
| Clear span capacity | 60 to 150+ ft | Limited, posts common | Wide but height-limited |
| Typical service life expectation | 40+ years | 20 to 30 years | 15 to 20 years, cover replacement cycle |
| Insulation options | Full insulated panel systems | Batt, condensation risk | Limited |
| Expansion | Endwall removal, bolt-on bays | Structural rebuild | Section addition, cover seams |
| Food-grade suitability | Yes with panel systems | Difficult | No |
| Maintenance | Fastener and coating checks | Rot, insect, paint cycles | Cover tension and UV degradation |
Service life figures are typical expectations rather than guaranteed values, and they depend heavily on coating specification, maintenance, and exposure. Fabric buildings win on speed and initial cost for equipment cover and commodity storage. Prefabricated steel buildings close much of that speed gap, because the frame is fabricated in the shop while site work proceeds. Steel wins wherever the building has to be insulated, washed, climate controlled, or expanded, and a well-maintained steel frame is built to last past the equipment it houses.
Ontario Design Factors That Change Your Build
Local conditions shape agricultural steel buildings more than most operators expect.
Southwestern Ontario puts farm structures through harsh weather conditions. Canadian winters load a roof with heavy wet snow, wind comes off Lake Erie with little to break it, and freeze-thaw cycling works on the foundation from November through March. Snow loads and wind loads are set by location under the Ontario Building Code, drawn from the climatic data in Supplementary Standard SB-1, and the governing figure comes from your municipality rather than a provincial average. Those numbers belong in the structural design from the start, not in a general allowance added later.
Essex County sits on heavy clay soils. The Brookston series covers roughly two thirds of the county and is poorly drained, which is why the region is so heavily tile-drained. On a building site that often drives deeper footings, engineered fill, or pile foundations under high-load slabs. Sites near existing greenhouse operations frequently carry drainage and grading constraints that have to be resolved before foundation design is finalized.
How the 2024 Building Code Classifies Your Farm Building
Ontario’s 2024 Building Code took effect on January 1, 2025 and changed how agricultural projects are reviewed. It added a new Part 2 covering farm buildings and a new Group G occupancy classification with four divisions:
• Group G, Division 1, high-hazard agricultural occupancies, which hold large volumes of flammable or explosive material. Barns with under-floor manure storage fall here.
• Group G, Division 2, agricultural occupancies not otherwise classified
• Group G, Division 3, greenhouse agricultural occupancies
• Group G, Division 4, agricultural occupancies with no human occupants, such as silos, digesters, and manure storage
The threshold that matters most is size. To be treated as a farm building under Part 2, a Division 1, 2, or 3 project must be under 600 square metres, roughly 6,500 square feet, and under three storeys, with an occupant load no greater than one person per 40 square metres. Division 4 buildings qualify regardless of size because nobody occupies them.
Most commercial-scale agricultural projects clear 6,500 square feet easily, which puts them on the large farm building side of that line. A 30,000 square foot warehouse or a 75,000 square foot packing facility does not get the relaxations a small equipment shed gets. Plan for full code review, professional design, and the general review requirements the 2024 code added for agricultural buildings.
Two further provisions are worth knowing before you budget. Underpinning an existing foundation must now be designed by a professional engineer. Smaller farm buildings of low human occupancy can still conform to the 1995 National Farm Building Code, so a small shed and a large warehouse on the same farm may follow different rules.
Permitting adds time that belongs in your schedule from the start. Municipal building departments across Essex County, Chatham-Kent, and Norfolk County each apply the same provincial building codes but run their own review timelines, and agricultural projects often require site plan approval, conservation authority review, or both. Applications need engineered drawings, and a building at commercial scale must be designed by a licensed architect or professional engineer. Agriculture runs on seasonal windows, so a permit delay in spring can push occupancy past the harvest you built the facility to handle. Agricultural building projects should carry permitting time in the schedule as a real line item.
Design-Build Compared to Coordinating Separate Contractors
Most farm building projects use three or more separate parties: an engineer, a steel supplier, and a general contractor. Each holds a separate contract, and the gaps between those contracts are where delays and change orders come from. Integrated building companies replace that structure with one contract and one accountable party.
Enqor works as a single contract covering design, engineering, steel fabrication, and construction. Fabrication begins while design details are still being finalized, which compresses the schedule. Enqor reports project timelines 20 to 30 percent faster than sequential delivery, 98 percent of projects within 3 percent of contracted budget, and 95 percent on-time delivery. These are company-reported figures.
For a farm operation, the practical benefit is accountability. One team answers for the foundation, the frame, the envelope, and the finish date, so no one is waiting on a shop drawing that a third party has not released. The same model applies to our industrial building construction work.
Frequently Asked Questions
How long does an agricultural steel building take to build?
Most farm buildings run 4 to 9 months from contract to occupancy, depending on size, permitting, and whether the building is insulated or refrigerated. Foundation work and steel fabrication can overlap when one contractor controls both.
How fast does the structure itself go up once the steel arrives?
Steel buildings go up quickly at the erection stage. Frame and envelope work on a mid-size farm building is usually measured in weeks, not months, because the components arrive cut and marked. The longer parts of the schedule sit in design, permitting, fabrication, and site work.
What is the largest clear span available for a farm building?
Clear spans of 150 feet and beyond are achievable with rigid frame steel construction. The practical limit is usually cost rather than engineering, since frame weight increases as span increases.
Can an existing farm building be expanded later?
Yes, if it is designed for it. A steel building with a bolted endwall and a foundation sized for the future footprint can be extended in bays. Retrofitting expansion capacity into a building that was not designed for it is significantly more expensive.
Do agricultural buildings need a building permit in Ontario?
Most do. A building permit is required for any structure larger than 10 square metres, about 108 square feet. Farm buildings often also trigger site plan or conservation authority review, and livestock buildings require an MDS data sheet, so confirm the full approval path before you set a construction start date.
Does my building qualify as a farm building under the Ontario Building Code?
Only if it meets the size and occupancy limits. A Group G Division 1, 2, or 3 building must be under 600 square metres, under three storeys, and occupied at no more than one person per 40 square metres. Above those limits the project is classified by its major occupancy and reviewed as a large building. Group G Division 4 buildings, which have no human occupants, qualify at any size.
What is the difference between a storage building and a processing facility?
A storage building holds product. A processing facility handles it. Processing adds food safety requirements, drainage, sanitation surfaces, refrigeration, and staff flow separation that storage buildings do not carry.
Plan Your Agricultural Building Project
Enqor delivers agricultural building construction for farms and food producers across Windsor-Essex County and Southwestern Ontario. Bring us your building needs and we will design a building around them rather than fitting your operation into a standard footprint. We size building solutions around throughput, clearances, and the equipment you already run, then engineer and fabricate the frame to match. You can also review our completed project portfolio.
Call 519-322-5995 or email sales@enqor.ca to discuss your agricultural building project.