18m² steel cabin frame kit
Bolts together in a weekend — no welding. The structure for a studio, office or granny flat, at our yard right now.
collect from Mickleham
- Secure checkout. Pick-up or delivery is chosen at the next step — delivery priced separately.
- Tax invoice with GST emailed with your order.
- Rather see it first? Come to the yard. Nothing to pay until you're happy.
- Bawa Builders
building in Australia 20+ years - ABN 75 156 245 484
registered Australian business - A real yard
5 Cranesbill Lane, Mickleham - Inspect a frame
before you pay a cent
Up close
See what you're getting.
Tap any photo to enlarge it.
Bolted corner joint, close up
Shoot: a column meeting a corner fitting with the bolts in. Phone macro, daylight, wipe the dust first.
Stand-in prompt
Label “Illustration”: Close-up photograph of a black-finished steel corner fitting joining a square column to two beams with galvanised hex bolts, sharp focus, natural daylight, shallow depth of field, no text.
Someone standing inside the frame
Shoot: a person in the doorway line, arms out, so buyers feel the 2.8 m height. This is the shot people share.
AI stand-in?
Take this one for real — generated people look wrong, and this will be your most-shared image.
A finished build — labelled as an impression
Caption it exactly: “Artist's impression of a finished build — not a Bluestone Kits customer project.”
AI prompt (fine to use)
Architectural visualisation of a small modern backyard studio, 6 m × 3 m, flat roof, black vertical steel cladding, one large glazed sliding door, small timber deck, Australian suburban backyard with a gum tree and lawn, late-afternoon light, photorealistic, no people, no text.
Why a steel frame kit
The structure is the hard part. This is the structure — done.
A studio, office or granny flat starts with a frame that's square, strong and stays that way. Timber burns, rots, warps and feeds termites. Ordering a kit from overseas means months of waiting and no way to see it first. This is 3.0mm galvanised steel, bolted — and it's already in Mickleham.
Won't burn.
Steel is non-combustible. A timber frame is fuel.
Won't rot or warp.
No moisture movement, no twisting studs. Straight walls stay straight.
Termites can't touch it.
There's nothing in the frame for them to eat.
We publish the gauge.
Most sellers don't. Ask them why.
What you're buying
One product. Published specs.
The numbers, the drawing and what's in the crate — because you'll ask anyway, and most sellers won't say.
| Footprint | 17.85 m² |
|---|---|
| Length | 5950 mm |
| Width | 3000 mm |
| Height | 2800 mm |
| Steel | 3.0 mm galvanised |
| Finish | Black |
| Assembly | Bolted — no welding |
| Crew | Two people, one weekend |
| Packed | Flat-pack |
| Stock | 40 frames · Mickleham VIC |
What's in the crate
- 4 columns, with top and bottom corner fittings
- Long and short roof beams
- Long and short floor beams
- Roof purlins (secondary roof beams)
- Floor joists (secondary floor beams)
- Bottom bracing and connecting plates
- Rainwater pipes for the columns
- Every bolt and fixing
Full manufacturer's specifications and drawings supplied. Engineering certification for your site available as an add-on — ask us.
Straight answer
What you get — and what you don't.
Honesty here saves everyone a bad week later. This is the structure, not a finished building.
You get IN THE KIT
- Complete galvanised steel frame — posts, rails, purlins
- All fixings and bolts
- Full manufacturer's specifications and drawings
- Tax invoice with GST
- Inspect one at Mickleham before you buy
You add YOUR BUILD
- Cladding and insulation
- Roofing
- Flooring, doors and windows
- Footings or slab, to your footing design
- Electrical, plumbing and fit-out
- Your building permit
This is the structure, not a finished building.
You add cladding, insulation, roofing, flooring, doors, windows, footings and fit-out. Most people get the frame up in a weekend and finish it over a few months. If you want a turnkey building, we're not the right fit — and we'll tell you that.
Supply only. We don't install and we don't manage builds. We can point you to independent installers — we don't take a cut.
The question everyone asks
Yes, you'll need a building permit.
Here's the plain version. We'd rather tell you now than after you've paid.
It's over the shed exemption.
At 18m² this is above Victoria's 10m² exemption, so a building permit is required. That's normal — it's the same for every shed, studio and granny flat this size in the state.
You probably won't need a planning permit.
Since December 2023, a second dwelling under 60m² on a lot over 300m² needs no planning permit in most of Victoria. Just the building permit.
Your surveyor will want documents.
Structural computations plus a site certificate, a soil test and a footing design. We supply full manufacturer's specifications and drawings with every frame. Engineering certification for your site is available as an add-on — ask us.
Two costs are yours.
The soil test (about $400–900) and the footing design (about $500–900) are site-specific, so they're the owner's cost. Every block is different — there's no honest way around that.
Not sure what your block needs? Send us your address and we'll tell you straight.
Ask what my block needsAssembly
Two people. One weekend. No welding.
Watch the team put one together, then the four steps below. A socket set, a level, a ladder and a mate.
The team bolting a frame together
Your assembly video goes here. 60–120 seconds, phone footage is fine, no music needed — the sound of spanners is the point.
How to add it
Shopify: Content → Files → upload the MP4, then Customize → Theme settings → Installation video → pick it. Or upload it to YouTube (Unlisted) and paste the link in the same place. Standalone page: put the file next to index.html and set VIDEO_SRC at the bottom of the page to its name (or a YouTube link).
- 1
Footings
Pour your slab or set your footings to the footing design your surveyor signs off.
- 2
Floor frame
Bolt the long and short floor beams into the bottom corner fittings, then drop in the floor joists.
- 3
Columns and roof
Stand the four columns and bolt the roof beams on through the top corner fittings.
- 4
Purlins and bracing
Fit the roof purlins and bottom bracing. The frame's done — clad it, roof it and fit it out at your pace.
The manufacturer's drawings in the kit show every member and every bolt.
Who we are
Backed by Bawa Builders. In Mickleham, not a PO box.
Bluestone Kits is backed by Bawa Builders — building in Australia for over 20 years. Our frames are here in Melbourne right now, and you're welcome to come and see one before you spend a dollar.
You at the gate, or the crew with a frame
Shoot: you (or Dad and the Bawa Builders crew) standing beside a frame at 5 Cranesbill Lane, looking at camera. Real faces are the strongest trust signal on this page.
AI stand-in?
No — this one has to be real. A stock or generated “team” photo is exactly what a wary buyer is checking for.
Questions
Straight answers.
If yours isn't here, call or WhatsApp — a real person answers.
Do I need a building permit?
Yes. At 18m² the frame is over Victoria's 10m² exemption, so a building permit is required. Since December 2023 a second dwelling under 60m² on a lot over 300m² needs no planning permit in most of Victoria — just the building permit. The plain-English version is above.
How long does it take to put up?
Two people, a weekend for the frame. It bolts together — no welding. Cladding, roofing and fit-out are then at your pace; most people finish over a few months.
What's the steel?
3.0mm galvanised steel, finished black. We publish the gauge; most sellers don't. Full manufacturer's specifications and drawings come with every kit.
Can I see one first?
Yes — please do. We're at 5 Cranesbill Lane, Mickleham. Message us and we'll set a time that suits you.
Do you install it?
No — we're supply only. We can point you to independent installers, but we don't take a cut and we don't manage the build. That keeps the price where it is.
How do I pay?
Card through our secure checkout — tap Buy the frame, then choose pick-up or delivery at the checkout. Prefer bank transfer or PayID? Message us and we'll send a tax invoice with GST. Every sale gets a proper tax invoice either way.
Do you deliver?
Yes — delivery is priced separately from the frame. Melbourne metro can be added at checkout. Regional Victoria is quoted per job, because a frame to Geelong and a frame to Mildura aren't the same truck — send us your postcode. Interstate — ask, and we'll tell you honestly whether it stacks up.
What if it arrives damaged?
Check it when it lands and tell us within 7 days — we'll replace the damaged part. Your rights under Australian Consumer Law apply regardless.
Can I get engineering for my permit?
Full manufacturer's specifications and drawings are supplied with every frame. Engineering certification for your site is available as an add-on — message us your address and we'll quote it.
Come and see one. Or buy today.
Collect from Mickleham; delivery priced separately. Tax invoice with every sale. Australian Consumer Law applies.
Not ready to buy?
Get a call back from the yard.
Tell us what you're building and a real person will call you. No newsletter, no spam, and we don't pass your details on.
The fine print
Plain English, no surprises.
The short version of how we sell, deliver and look after your details. Nothing here takes away your rights under the Australian Consumer Law.
Terms of sale
Who you're dealing with. Bluestone Kits is a business of Bawa Builders, ABN 75 156 245 484, at 5 Cranesbill Lane, Mickleham, Victoria. "We", "us" and "our" mean that business.
What you're buying. A flat-pack steel cabin frame kit, supplied as a kit of parts with the manufacturer's specifications and drawings. It is supply only. Cladding, roofing, insulation, flooring, doors, windows, footings, services, fit-out, installation, building and planning permits, and engineering for your site are not included unless listed on your invoice.
Prices and payment. All prices are in Australian dollars and include GST. A tax invoice is issued for every sale. An order is accepted when payment is received. Delivery, where offered, is charged separately and quoted for your address.
Your responsibilities. You are responsible for checking the kit suits your site and your plans, for obtaining any permits and site-specific engineering, for footings, and for assembling the frame safely in line with the manufacturer's drawings. We do not install and we do not manage builds; any installer you engage is engaged by you.
Descriptions and images. Specifications are the manufacturer's. Images may show a display frame, a factory frame or an illustration; the kit you receive is the one described on your invoice.
Consumer guarantees. Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. If something is faulty or not as described, contact us and we will put it right in line with those guarantees. Change-of-mind returns are at our discretion.
Liability. To the extent the law allows, our liability for anything not covered by the consumer guarantees is limited to replacing the goods or refunding the price paid. These terms are governed by the laws of Victoria, Australia.
Pick-up, delivery and damaged parts
Pick-up. Collect from our Mickleham yard by arrangement — message or call us to set a time. Bring a vehicle that can carry a strapped pallet; we will help load. The kit is yours from the moment it is loaded.
Delivery. Where offered, delivery is quoted per address and charged separately. Someone needs to be there to receive it. Kerbside or driveway drop unless agreed otherwise. Risk passes to you once the kit is unloaded at your address.
Check it when it lands. Count the parts against the packing list and look for transit damage. Tell us within 7 days of pick-up or delivery — with photos if you can — and we will replace damaged or missing parts. This sits alongside, not instead of, your rights under the Australian Consumer Law.
Privacy
What we collect. Your name, phone number, pick-up or delivery address, order details, and whatever you send us on WhatsApp or through this site.
Why. To answer your enquiry, process your order, arrange pick-up or delivery, issue your tax invoice, and meet our legal and tax record-keeping obligations.
Who else sees it. Our checkout and payment provider (Shopify) to process payment; a delivery contractor if you choose delivery; and WhatsApp (Meta) when you message us. We do not sell, rent or pass on your details for marketing, and we only send marketing if you ask for it.
Analytics. This site may use cookies and analytics tools to understand how people use it. You can block cookies in your browser.
Your details, your call. To see, correct or delete what we hold about you, message or call us on 0485 756 329. We keep records only as long as we need them for the purposes above and as tax law requires. We aim to handle personal information in line with the Australian Privacy Principles.