0421 348 136

An elegant and stylish home is more than a house.

Our climate in Perth offers the idyllic indoor-outdoor lifestyle. We have demonstrated time-and time again our ability to seamlessly integrate the indoor space with exciting external outdoor courtyards including swimming pools, attached and detached Alfresco, ponds & landscape designs to form an integral part of our home designs.

For our discerning clients, this design work is part of the comprehensive service that we offer. It’s FREE. 

The Finishes: Completing the Picture

We Love Challenges.

Freedom – The Key to Success

Architectural Design and TenderING Service

Comprehensive Service – Beyond the Design


With over twenty (20) years of professional architectural design and building experience in Perth, Extension-by-Design will deliver exciting, practical and cost effective residential design solutions that are sure to please. We work on

  • Single Storey Additions
  • Double Storey Additions
  • Single Storey New Homes
  • Double Storey New Homes
  • Split level homes for sloping blocks
  • Homes with under-crofts
  • Courtyard Homes

If you have a clear idea about how your home will look like, awesome, we will bring those thoughts together for you and work to make it a reality.  
If your vision is unclear, our strength and our experience is to discuss the many options with you, recommend the many practical options that can excite you and piece together all those things that will address your many needs.
Existing homes that require addition and refurbishments vary in age, size, structural integrity, shape and location. Building sites for new homes also vary greatly. Our function is to take your vision, look beyond the obvious, think outside the square to deliver creative home design solutions. We refuse to be beaten by home design challenges.
Regardless of how challenging your vision for the home addition or new Home may seem, at Extensions By Design we will work with you to deliver a modern and practical solution that will give you peace of mind. 

Extensions By Design – Home Designers Perth, Western Australia


Regardless of budget, we understand that our clients want value for money. They want to achieve the best possible price outcome for their home addition our new home.

Over and above our competitive design fees, Extensions-by-Design can also help you achieve the most cost effective build contract and the other expenses to interior decorate and landscape your home. As part of our service, we will happily arrange competitive tenders for your construction and finishes.

An Elegant Design for Any Home Extension or Vacant Block.

Value for Money

With the modern lifestyle, modern families have different needs. A successful home reflects and enhances the lifestyle choice that we make. Thus each home is different, each home is unique, individual and offers its owners lifestyle choices.
At Extensions-by-Design we understand individual needs and we work with you to deliver the best design for your home addition or your new home. Over the many years that we have designed Home Additions and New Homes for

  • Young families or families with mature children
  • Homes for executive couples
  • Baby-boomer Lock & Leave Lifestyle
  • Mixed residential/business development
  • Dwellings with attached aged care accommodation
  • Properties for rural settings

We value our clients and understand that people simply change their mind about something or would like to explore alternative design solutions, we give our clients the freedom to make design changes without the fear of adding huge expense.

Over and above the elegant design solutions that will prepare for our discerning clients, we are also happy to become a project partner that can assist with every aspect of the project from Start to Completion.
Beyond delivering the design, we can also assist with

  • All Statutory approvals
  • Surveys & Engineering
  • Energy Assessments & Building Certification
  • Construction Tendering – Selecting the most appropriate Builder
  • Owner Builder Mentoring
  • Home Finishes, Interior Decorating and Landscaping

Contact US - Obligation Free

             Email -

​​             Phone -       0421 348 136

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