AGATHĒ builds quality granny flats in Kellyville, bringing expert craftsmanship and a genuine appreciation for this fast-growing family suburb to create spaces that add real value and work beautifully for the way your family lives.
At AGATHĒ, a granny flat is never a budget afterthought in the backyard. It's a Scandinavian-designed, high-performance home in miniature — built with the same building science, natural light, low-tox materials, and considered craftsmanship as our Scandi homes. Beautiful, healthy, and built to last.
We turn generous backyard spaces into beautiful, self-contained homes — thoughtfully designed, carefully finished, and built to sit naturally alongside the character of your existing home. The result is a practical, elegant space for ageing parents, adult children, a quiet home office, or quality rental income.
Blending new developments with established pockets, Kellyville is one of Sydney's fastest-growing family suburbs, with modern homes, metro access, and growing amenities. Properties here often have the room for a well-designed granny flat — whether you need an independent space for ageing parents, a retreat for adult children, a dedicated home office, or a quality rental in a high-demand area. We'll design and build something that fits Kellyville and adds genuine, lasting value to your property.
Partial to full-scale renovations that transform your existing spaces into healthy, beautiful family living environments.
Custom extensions that integrate seamlessly with your home's design, enhancing space, comfort and value.
Start the right way with our PAC-certified process — aligning design, budget and timeline before you build.
Scandinavian-inspired homes and cabins built to a healthy, high-performance standard.
Builder-led delivery of custom homes and certified Passive House builds, managed end to end.
From design to delivery, we manage every detail for a smooth, on-time, on-budget build.
Whether you are at the early thinking stage or ready to move, we are happy to have an honest conversation. No obligation. We will tell you if we are not the right fit.