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About Us


At Happy House Co., we are a Perth-based interior design studio specialising in pre-start preparation for homeowners building with project builders.

As qualified interior designers, our goal is to simplify what is often one of the most overwhelming stages of the building process.

In a short amount of time, you’re required to make a large number of important - and often expensive - decisions. Without the right guidance, this can quickly feel unclear and stressful.

We guide you through the pre-start process step by step, helping you plan your electrical layouts, cabinetry, and selections in advance so you can walk into your builder meeting feeling confident, prepared, and in control.

We take the guesswork out of selecting colours, materials, and finishes, ensuring your home feels cohesive and thoughtfully considered from the very beginning.

Most of our clients come to us feeling overwhelmed and unsure where to start - and leave feeling clear, confident, and excited about the home they’re creating.

We believe great design starts with understanding how you live. By building genuine relationships with our clients, we create homes that feel beautiful, functional, and uniquely yours.

Ready to bring your vision to life? Head to our contact page to book a discovery call.

We can’t wait to meet you.

Meet Susan


Founder of Happy House Co., Susan started the studio with one goal: to take the stress out of pre-start.

Her bright, optimistic approach makes even the most complex decisions feel simple, and she loves seeing clients leave feeling confident and excited about their home.

Meet Sienna


Sienna has a strong eye for colour and design, and is passionate about creating a positive, supportive experience for every client.

Her approachable nature helps clients feel at ease throughout the pre-start process, making what can feel overwhelming far more enjoyable and stress-free.