Steel carports, granny flats, drafting and building support

Straight Edge Steel Frame Homes supplies Western Australian owner-builders with impressively designed steel frame kit homes. Our kit home service makes your job of building a home simple and convenient. There is no time allocation against budget and no misperceptions when it comes to how you want your home constructed. We provide homes of various sizes and designs as well as granny flats, chalets and home additions. Whether you choose to build your own home or hire a trusted builder to do so, the benefits of building a steel frame home are numerous, and we offer a variety of services to assist you when you purchase your new kit home.

At Straight Edge, we offer a range of services to assist owner-builders with the design and construction process, including:


This service is available to anyone who wishes to build his or her own custom-designed home. We have standard options available but we find that as families grow, so do their needs, which is why we have professional, skilled draughtsmen who can design your dream home. Your home is a true reflection of your personal style and what better way to unite your family than a uniquely designed kit home. Our drafting service provides full working drawings for building approval purposes as well as an engineer certification and energy assessment.


  • Design based on clients sketch – $1200 + GST
  • Design from scratch using a design brief – from $2400
  • Granny flats and other structures on a slab up to 100m² – $3800 + GST
  • Single level home on slab – $4900 + GST (add $880 for a stumped floor)
  • Two story home on slab – $5900 + GST


All Straight Edge’s steel frame homes come with a user friendly owner builder’s manual to help you construct your home with ease and confidence, regardless of your level of building experience. Should you experience any problems throughout the process, do not hesitate to contact the expert team at Straight Edge.


Even though we do not build the kit homes for you, depending on your area, we are happy to introduce you to contractors or registered builders who have worked with our clients before to construct your home. Our homes can be built on concrete slabs and steel suspended floor systems, depending on your chosen site. Upon purchasing a kit home from us, we can advise you on what the best option would be to begin construction. We suggest that you provide us with a contour survey and a soil test report.


We have a wide range of new home designs on offer, and are always working to increase the quality of our designs for new living spaces. Our plans are fully customisable, and we provide free quotes for any changes you wish to make to our standard home options.


If you have always wanted an addition on your property, a steel frame kit granny flat or studio from Straight Edge is ideal. Whether it is for visitors, the in-laws, a growing teenager or just a hobby room, a kit granny flat or studio is the perfect solution to solving space restrictions in your home.


Protect your vehicle from the harsh Australian weather with standard and custom steel kit carports. If you are wetting your toes in the DIY department then this is a great first project.





We told Scott when we met him that we were high maintenance clients and that we had high expectations and researched everything. No matter how annoying we were, they helped us with our design and the major surprise was there were no charges for changing our minds midway. As long as the steel had not been ordered, we could adjust the design. Even when the steel was ordered and minor changes were required because some aspects would not quite work with some adjustments we had made, they found some way to resolve the issue.

They accommodated our research and embraced new things we found that added to the design of the house. When we had a few stumbles because of non delivery (not Straight Edge’s fault) there was calm support as together we worked out how to resolve our special orders as owner builders, and not big time builders with power.

This journey was all the more pleasant because of Straight Edge Steel Frame Homes.

Thanks Scott

The Cheeseman’s.


This is the second time we have done plans to build a home, and being the second time around we really knew what we were after but also needed expert advice as we have lots of ideas. We wanted to work with a draftsman that provided steel frame home kits that would also work with rammed earth.

When first was looking around we came across Straightedge homes website and noticed they accommodated and supported owner builders – which was also what we had planned to do again. First time meeting with Scott I was so happy, he really knows the product and is very accommodating to what we wanted to do, extremely flexible in changing plans (many times!!) plus also fantastic at just general building advice on what will and won’t work. Scott has a very calm and easy going approach he is working on getting our ideas to work in the design not what works best for him.

So far we are close to our final plans, and we couldn’t recommend working with Scott enough. Most importantly to us he also has taken a great interest in our vision and is so helpful and is capable to support us through this project, which is important to us as we are building our home now just a house. Thanks Scott!



As a young couple looking to build we did extensive research into suppliers of steel framed homes and found that Straight Edge were not just faultless but were a stand out among all other steel framed home suppliers in Western Australia.

With their customer service, attention to detail and willingness to go the extra mile, you certainly will not be disappointed. If you’re looking for prompt, detailed answers to your building and design questions (as we were), you’ll be pleasantly surprised with Straight Edge’s consistency. We highly recommend Straight Edge to anyone who is looking to design and build a steel framed dream home.

Our Address

35a Contour Drive, Mullaloo, WA, 6027

Our Contact

Our Telephone

0416 167 553