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Large Scale Steel Portal Sheds

Large-scale agricultural sheds for implement storage and herd homes. Built to last a lifetime. Or two.
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quality for life

Built for Generations

For years, our standard timber pole sheds have served Kiwi farmers well, spanning up to 24 metres with our Alpine Structural steel rafters. For many, that’s plenty.

However, after speaking to a number of farmers around New Zealand,  the need for quality, long-lasting, large-scale agricultural sheds became clear.

If you need a shed with spans of 25 to 50 metres - and you want it to stand the test of time, an Alpine structural steel portal shed is built to last for generations.

01

Structural Steel

The structural steel system provides maximum durability and rust protection to provide a building that will last for multiple generations.

02

Clearspans from 25 to 50 meters

Our new steel portal design can achieve clearspans starting at 25 meters, ranging up to 50 meters for large-scale implement storage and clearspan herd homes.

03

Cost-Efficient Modular Design from $200 per m2

Thanks to Alpine’s buying power and practical knowledge after 30+ years in construction, this range has been value-engineered, making it incredibly cost-efficient. 

built for the future

Customised Storage for Your Farm

Whether you're storing hay, machinery, grain, or produce, the right shed drives efficiency and maximises your profits.

Herd Homes and Composting Barns

Increase cow comfort and milk production with an animal shelter built to last.

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Implement Storage

Maximise storage space and protect your machinery from weather exposure.

Alpine Steel Portal Implement Storage

Large-Scale Workshops

Minimise depreciation and reduce maintenance downtime for your equipment.

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Bird-Proof Option

Upgrade to a fully bird-proof option using the Alpine rafter design.

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Your Dream Shed, Brought to Life

Alpine’s refined system provides a seamless experience from concept to completion, delivering a shed that’s designed for your needs and built to last for generations.
Step 01

Consultation & Concept

Your ideas and needs come first. Receive personalised concepts and detailed cost estimates tailored to your project.

Step 02

Design & Consent

Our in-house team handles the design and consent process, saving you time and stress.

Step 03

Delivery & Build

Your kitset arrives clearly labeled for a smooth, straightforward and streamlined assembly.

Download Your Steel Portal Brochure

Download a brochure to answer your questions about your shed project.
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Phil May
"When we trade these machines in, it's that gap in the middle we're trying to bridge. And this shed is helping the gear look better and last longer. Alpine have been awesome to deal with, I'd definitely recommend them."
May Brothers Contracting

 

Phil and Tim May from May Brothers Contracting needed a large-scale implement storage shed. Learn why this smart all-steel system worked well for them and how they found the process working with Alpine.

View Project
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30m Steel Portal Clearspan

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Birdproof Design

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50-Year Building Consent

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Knowledge Hub

Got questions about your shed project? Explore the Knowledge Hub for expert advice, tips, and inspiration to guide you on your shed building journey.
Alpine Buildings new steel portal range

clearspan shed Shed Design

New Steel Portal Range: What you need to know

Discover Alpine Buildings' new Steel Portal range, designed for large-scale rural operations with unmatched durability, spanning up to 50 metres for machinery, herd homes, and workshops.

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Alpine kitset shed delivered in full

Tips & Tricks kitset sheds Shed Design

How Does a Kitset Shed Get Delivered?

Learn how a kitset shed is delivered and assembled, covering logistics, site preparation, and the final build process for a hassle-free experience.

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kitset sheds

What is the process from plans to delivery?

We break down the step-by-step process that happens after you purchase an Alpine shed. From plans & consent to construction, here's what you need to know.

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FAQs

Got questions? You’re not alone. Find clear, straightforward answers to the most common concerns about designing, building, and customising your shed.
Is the steel portal range bird-proof?

This standard Steel Portal range is not bird-proof. You can be upgraded to a bird-proof design for an additional cost. 

 

Get in touch to find out more.

How wide can the Steel Portal Range span?

Our new steel portal design can achieve clearspans starting at 25 meters, ranging up to 50 meters for large-scale implement storage and clearspan herd homes.

 
What width doors can I have on my implement and workshop shed?

The door size on your implement shed depends on the bay sizes. The common door sizes are 4.0 - 6.0m wide, depending on the size of your machinery. The wider the door, the more costly they tend to be. For extra wide door openings, sliding doors can be a good option. 

How long do Alpine's Steel Portal sheds last?

Alpine uses structural steel to get the most durable building. This means you get a 50-year building consent, while many cheaper options will only get a 25-year building consent.

 

Designed for durability and efficiency, quality materials ensure your shed will stand strong for generations to come.

Gallery

View more projects and shed images in our full gallery.
May Brothers Contracting 3 Steel Portal Implement Storage Alpine Buildings Kelvin Sinclair - IMG_2189ee-1 Renders_2 - Photo-1
Maximise the Return On Your Investment Alpine Call to Action
Invest in a structure that will stand the test of time and endure for generations.

Do it once. Do it right.