Granny Flats Perth

Granny Flat Designs By Concept Steel Constructions

We are a family owned business with over 30 years building experience and specialise in building quality Granny Flats. Whether constructed from brick or steel frame we guarantee to give you the best quality granny flat designs at an affordable cost.

Granny Flat Designs

The standard plans we have designed as seen on this website are just an example and can be built as drawn in steel frame or double brick and can be altered to suit your needs. Please select from the following designs:

Our sales team are all experienced tradesmen and are happy to give 'real' advice to help you achieve your goal without the 'hard sell'.

Registered Granny Flat Builders

CSC are registered builders and we pride ourselves on building correctly the first time to Australian Standards. All our designs are 6 star energy compliant and you will notice the difference. Build time to lockup is generally around 2-3 weeks after council approval.

Our main aim is for customer satisfaction, we do the entire job from drafting/council submission to building/handover (including earthworks, unlike some companies). We use only skilled tradesmen who take pride in their work and get the job done right the first time.

As well as granny flats, CSC also build quality room additions, new custom houses, patios and gazebos. See the links from this website to our other sites to get more details.

Click here to contact us for more information about our granny flat designs in Perth, Western Australia.

Free Quotes

Please fill out the form below and we will get back to you with a response shortly.

Full Name *
Email Address *
Phone Number *
Type of Granny Flat
Additional Information
Enter Word Verification *
Captcha Image

Teenage Retreat

$61,202.28 inc GST

The ideal solution when your teenager needs privacy and you need peace! All the necessities for cleanliness whilst still being part of the family at mealtimes, this retreat provides the additional space necessary for a growing teenager or young adult not yet ready to leave home.

A large wardrobe and plenty of living space makes it ideal for friends to gather and the undercover veranda provides dry storage for outdoor activity equipment.

The Dongara

$77,728.00 inc GST

The Dongara is a compact comfortable home with all the facilities needed for an independent lifestyle.

A choice of bathroom tiles and exterior finishes lets you customise the home to suit and a lined veranda and boxed eaves gives a quality appearance.

This house can be in double brick and render or on stumps with a hardiplank exterior finish to match the main home. Superb insulation keeps your home cool in summer and warm in winter.


$86,289.68 inc GST

A delightful midrange home with all of Concept's superior features including glass shower screens, laundry with linen cupboard and lined eaves to the outside.

A spacious lounge/kitchen area makes this a comfortable entertaining room with custom kitchen bench and lockable window security with fly screens.

This home can be built in double brick and render as well as our standard steel frame configuration or modified for handicapped use if required.

The Moora

$86,378.25 inc GST

An attractive from veranda sets off the spacious interior of this delightful home. Designed for maximum room, the compact kitchen area gives a large living area and neat bathroom and laundry facilities. The bedroom features a robe with sliding doors and could be customised with mirrors to suit. All of our interiors can be altered to meet your personal requirements, giving an individual touch to every home.

The Coorow

$90,155.81 inc GST

The Coorow is a great mid range home with loads of living space as well as private entry to the shared bathroom. A great choice for seniors needing undisturbed sleeping arrangements!

It comes all of Concept's quality finished including solid core front door, secure windows with locks and fly screens and a glass shower screen.

All our homes meet handicapped requirements with a little modification and all council applications are included in the price.


$101,580.36 inc GST

Top of the range for the discerning owner, this unit offers 2 bedrooms for restful nights or occasional visitors and flexible living areas to meet all requirements.

Robes to both bedrooms and a comprehensive kitchen and meals area makes this an ideal home for retirees or a young family.

All of Concept Steel's homes offer a high quality in fixtures and fittings, a solid core front door and lockable windows with fly screens.

A choice of structural materials is available to match the existing building and 6 star energy efficiency is automatically achieved with our high quality insulation.