Steel Frames WA

STEEL FRAMES FOR
GRANNY FLATS

by Steel Frames WA

WA'S PREMIER STEEL FRAMING BUILDER AND SUPPLIER FOR GRANNY FLATS

Building granny flats with steel frames offers long-lasting value and peace of mind due to their durability, cost-effectiveness, speedy construction, design flexibility, and resistance to fire, termites, and rot. If you’re looking for high-quality framing engineered with precision, you’ve come to the right place.

Steel Frames WA offers a complete in-house service for light steel framing, structural steel design, manufacture and delivery for any granny flat framing needs. Have a chat with our team to find out we can get your granny flat built to be a cut above the rest.

OUR GRANNY FLAT STEEL FRAME KITS

We offer a complete steel framing solution for any custom granny flat design or if you need a starting point, check out our existing granny flat framing kit design below. With our unbeatable after-sale service and available frame kit installation manuals, we make building granny flats simple for builders and owner builders alike.

BENEFITS OF STEEL FRAMING FOR GRANNY FLATS

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Termite damage is the leading cause of structural damage to granny flats. Steel frames are 100% termite and borer proof, with no need for ongoing treatment and maintenance.

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Steel frames won’t shrink, twist or warp, so you won't face problems such as cracked cornices, jamming doors or uneven roof lines, so over the life of your granny flat, ongoing costs are significantly reduced.

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By choosing steel, you're supporting the environment, as steel framing is 100% recyclable, requires no logging, and helps lower carbon emissions, promoting cleaner air for future generations.

Why Choose Our Solutions

With Steel Frames WA in your corner, you’re never alone, our after-sale service, use of state of the art 3D modelling and frame kit installation manuals, makes erecting our granny flat frame kits and floor systems simple for builders and owner builders alike.

When you get a project done with Steel Frames WA, you will enjoy:

  • Professional and experienced steel framing design, supply and install service
  • Custom steel framing design or build from one of our ready made granny flat framing plans
  • Complete framing solution: steel wall framing, roof truss systems, battens, strap roof bracing & tensioners, all associated brackets and fixings, and more
  • Delivery service to your desired site

OUR PREVIOUS FRAMING PROJECTS

OUR CAPABILITIES

Our granny flat steel frames, designed with advanced software to the highest standards, are precisely engineered for strength and performance, and come pre-braced and pre-punched with service holes, eliminating the need for drilling. Built for the future of construction, they are 100% non-combustible, termite-proof, and completely recyclable, ensuring durability and sustainability. Additionally, they won’t rot, warp, twist, bow, shrink, or settle over time.

Additionally, our frames are designed in accordance to the following standards:

  • AS/NZS 1170.0.0.2002 (Structural Design Actions Part 0 – General Principles)
  • AS/NZS 1170.1.2002 (Structural Design Actions Part 1)
  • AS/NZS 1170.2.2011 (Structural Design Actions Part 2 – Wind Actions)
  • AS 4055-2012 (Wind Loads for Housing)
  • NASH Standard:2006 (Residential and Low Rise Steel Structures: Part 1)
  • AS 3566.1:2002 (Self Drilling Screws)
  • AS 4100:1998 (Steel Structures Code)
  • AS/NZS 4600:2018 (Cold Formed Steel Structures)

Our Process

Do you need framing for your building? Follow our five-step process to order your framing today:

  • Specify
  • Design
  • Finalise Order
  • Production
  • Build

Give a detailed description of your requirements. It's helpful if you know the needed framing shapes and varieties, but you can always seek assistance from our pros.

Based on the specifics of your project, engineered drawings and layouts will be provided. We follow Australian standards to ensure your structure is compliant.

Once the design is complete, we will send it to you for review. All needed revisions will be performed in this step.
With the design approved, we move on to the manufacturing process, which involves steel cutting, assembling, and welding.

Your granny flat steel frames are complete and will be delivered to your construction site.

About Steel Frames WA

Steel Frames WA is Western Australia’s premier framing supplier for builders. We provide an all-in-one service solution from supply, engineering, installation, detailing and prefabrication. In addition, our team is backed by more than 55 years of experience in the construction industry.

Our team at Steel Frames WA specialises in constructing steel-framed and prefabricated buildings across WA. From design, supply, to the fabrication and assembly of steel frames for these specialised environments, we’re committed to delivering a project that endures.

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OUR CLIENT TESTIMONIALS

James Mews
James Mews
00:50 21 Aug 26
Thanks Rigo and Luke at Steel Frames W.A. Nothing was ever too much trouble. Communication was excellent, and they consistently went above and beyond to keep my project running smoothly and on track.The only improvement I can think of is if Steel Frames W.A. somehow cloned them.
Hemanth Kotha
Hemanth Kotha
04:55 07 Aug 26
We have used SFWA, and the product itself was excellent. We were happy with the quality and overall performance and the team were very helpful during the modelling stage.The installation team that completed the trusses and frames did a fantastic job and were great to work with. The project coordination could have been better, as there were a few delays during the installation process.
Israil Claridge
Israil Claridge
08:26 22 May 26
Steel frames WA provided high quality steel frames for my two storey house build at a competitive price, and great communication through the process. Would highly recommend!
Kate Grogan
Kate Grogan
08:49 12 Dec 25
Big thanks to Steel Frames WA. Very happy with our steel frame. Went together really easily and quickly and looks great. Big shout out to Lewis who coordinated our delivery in two parts ensuring we could get started right away. Would recommend
Shona
Shona
09:08 04 Dec 25
We had the best experience with GM Jeremy and Production Manager Lewis.They always responded promptly to our queries! Production was very quick and delivery all happened within 2 weeks! Will definitely be returning to this business for future builds 5 star customer service and satisfaction! Well done WA Steelframes and thank youLance and Shona Annan
Ryan Bebich
Ryan Bebich
04:45 07 Aug 25
We have used SteelframesWA for our Scarborough second storey build.The product was extremely easy to use and erect.The service from SteelframesWA was also spot on with any communication or questions we had about the product they were always available and happy to help out.
Jake Ragno
Jake Ragno
09:35 08 May 25
Stoked with the service and assistance from Jeremy and his team. Highly recommend.
Alejandra Umana
Alejandra Umana
01:15 08 May 25
Super ! So glad I went with them, easy experience. Even after delivery these guys have been super helpful. As an owner builder I would highly recommend to others ! We installed it all ourselves. The install was simple and well put together, very clear. Comes with bracing on the frames already. Just super happy with the whole experience. Thankyou team!
Paul Smith
Paul Smith
07:20 12 Feb 25
Very professional and responsive, great communication. From the yard to office staff, everyone were very helpful. Highly recommended!
It was a pleasure working with a professional team at Steel Frames WA. All our expectations were met. The quality and durability of the steel frames and trusses are beyond compare. We have since found the structures on a smaller scale for other projects very useful and we were gladly accommodated.
Stephen Humphries
Stephen Humphries
05:16 10 Feb 25
As customer of Steel Frames WA, I can comment firsthand, that they provide excellent service, design, and manufacturing. Their finished product is second to none, with very strong and rigid frames which are precision built enabling one to have millimetre accuracy onsite. Also, their factory-built frames enable a quick and efficient build, saving a lot of time and expense. I can highly recommend Steel Frames WA and believe they are setting the benchmark for this industry in WA.
Nicholas Bishop
Nicholas Bishop
04:50 10 Feb 25
Excellent service, affordable and quality, they made sure it was right
Dominique Condo
Dominique Condo
10:47 08 Mar 23
Fantastic service from the team at Steel Frames WA, will be recommending to others
Yas Baxter
Yas Baxter
23:44 06 Mar 23
I recently had the pleasure of working with Steel Frames WA for a construction project, and I must say that I am thoroughly impressed with the quality of their steel wall frames and steel roof trusses. The team was highly professional and efficient in their work, and they delivered exactly what I had envisioned for my project. Overall, I would highly recommend to anyone in need of steel products for their construction needs. Thank you for the excellent service!
Adam Matthew
Adam Matthew
02:46 05 Mar 23
The team at Steel Frames WA are setting new standards for product and are exceeding expectations. I can't speak highly enough of them.
sam mcdonald
sam mcdonald
09:54 20 Feb 23
Great service from the team, design to delivery👍
Jakeb Wells
Jakeb Wells
02:00 19 Feb 23
Excellent service and quality steel frames and roof trusses! I am very happy with the outcome and will recommend!
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FAQs

Steel framing are strong and durable, they won’t rot, shrink, twist or bend over time. They are non-combustible, termite resistant and recyclable making them an environmentally friendly solution. They are prefabricated off site, reducing the amount of on-site labour required, meaning your project can be constructed quickly and efficiently.

Our detailers are highly skilled and will build your project in 3D on  the screen before we manufacture your frames.

As a rule of thumb, it takes around two days to provide a quote from the time you phone or email our friendly team ( 08-6205-9400 |  sales@steelframeswa.com.au). If your project is urgent, please call us and we will do our best to accommodate.

Yes, we offer installation of steel frames for commercial projects. 

Although we do not provide installation for rural projects, we provide prefabrication before delivery of the modular steel frames.

Steel is a naturally tough metal. Steel frames won’t shrink, twist or bend over time.

No, our steel is hot dipped in an aluminium, zinc, and magnesium alloy, Preventing rust from occurring.

At Steel Frames WA, we provide the following services for granny flats:

And more. Contact us to get a quote and to find out how we can best help you for your project.