ABOUT US
We design and build spaces that help you stay in the home you already love.
A family business, by design
With over 35 years of experience
in the building industry, we bring expertise, reliability, and a personalised approach to every project.
At QR Homes, we specialise in home extensions and granny flats that create more space, better flow, and new opportunities — without the need to move.
Whether it’s room for a growing family, independent living, or additional income, every project is approached with a clear focus on how your home needs to function — not just how it should look.
QR Homes is led by builder Cosimo Petrolo and interior designer Mariia Komarova — combining decades of construction experience with a thoughtful design approach.
As a family business, we care deeply about the spaces we create and the people we create them for.
Because at the end of the day, it’s not just about building — it’s about creating a home that truly works for you.
Cosimo: Builder & Construction Lead
With over 35 years of experience in the building industry, Cosimo brings deep practical knowledge and a hands-on approach to every project.
From structural planning to final execution, he ensures every extension or granny flat is built with precision, care, and long-term durability in mind.
His focus is simple — to create spaces that not only look right, but work properly and stand the test of time.
Mariia: Design & Client Experience
Mariia brings a thoughtful design perspective to every project, ensuring each space feels cohesive, functional, and aligned with how you actually live.
Rather than focusing on decoration alone, her role is to help shape the layout, flow, and overall feel of your home — so the final result integrates seamlessly with the existing space.
She works closely with clients throughout the process, helping translate ideas into clear direction and ensuring every detail supports both practicality and lifestyle.
Our Difference: A Smarter Way to Expand Your Home
At QR Homes, we don’t believe in one-size-fits-all solutions. We specialise in creating well-considered home extensions and granny flats in Perth that improve how your home works — not just how it looks.
We focus on:
Home extensions that create more space, better flow, and long-term functionality
Granny flats designed for family, flexibility, or additional income
Thoughtful layouts that feel like a natural part of your existing home
A clear, guided process — so you always understand what’s happening and what comes next
Our approach is grounded in practicality and care. We take the time to understand your home, your block, and how you live — so the outcome feels cohesive, intentional, and built to last.
Let’s explore what’s possible for your home
If you’re considering an extension or granny flat but aren’t sure where to start, we’ll help you understand your options and what makes sense for your space.