A person standing inside a modern home looking out a large window at a view of the ocean and rocky coastline.

GRANNY FLATS

KILLARA

Agathē builds quality granny flats in Killara, bringing expert craftsmanship and Upper North Shore knowledge to create spaces that add value and work for your lifestyle.

GRANNY FLATS IN KILLARA

See how we turn backyard spaces into beautiful, self contained homes. Our granny flat gallery shows careful building, modern design, and how we blend new structures with your existing property, creating practical solutions for family living, guests, or rental income with quality finishes and clean design.

Elegant dining room with panoramic windows revealing coastal balcony and ocean beyond, reflecting the sophisticated design of granny flats in Killara renovations
Sleek modern home with black facade and expansive glazing surrounded by manicured landscaping, exemplifying the premium standards for granny flats in Killara
Homeowner captivated by stunning coastal panorama from modern living space, illustrating the transformative lifestyle benefits of granny flats in Killara developments
Contemporary black residence with wraparound patio set within leafy surroundings, showcasing the architectural integration typical of granny flats in Killara projects
Architecturally refined structure featuring private terrace and generous windows set among native trees, representing the design excellence of granny flats in Killara
Contemporary black building with concrete patio and metal detailing in natural bushland setting, demonstrating the quality craftsmanship of granny flats in Killara builds

WONDERING WHERE TO START?

A prestigious suburb on Sydney's Upper North Shore, Killara features quiet, leafy streets with stunning modern and heritage homes surrounded by beautiful gardens. With excellent schools, parks, and convenient transport, many properties in this sought after area have generous backyards ready for granny flat development. Whether you need a compact studio, a spacious two bedroom home, or a dedicated office space, we design and build granny flats that suit the area while creating independent living that adds comfort, function, and property value.

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DISCOVER OUR SERVICES

Open sliding glass door to dining area with wooden table and chairs, potted plants outside, white siding, and small porch with wooden steps.

HOME RENOVATIONS

From partial to full-scale renovations, our services are designed to transform your existing spaces into stunning, family living environments.

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Front view of a house with a blue front door and a small porch, surrounded by colorful flowering bushes and a well-maintained lawn.

CUSTOM EXTENSIONS

Expand your Northern Beaches Home with our bespoke extension solutions that seamlessly integrate with your home’s current design, enhancing both space and value.

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PRE CONSTRUCTION

Start your build the right way with our PAC-certified pre-construction process – a collaborative approach that aligns your design, budget, and timeline.

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A man in a black jacket with the logo 'AGATHÉ BUILDERS' on the back walks towards a modern house with wood and stone exterior walls and large windows.

ALTERATIONS & ADDITIONS

Refresh your existing space with thoughtful alterations and additions that enhance flow, functionality, and the way your home supports your lifestyle.

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View through a window showing plants and bushes with pink and green foliage in a garden.

HEALTHY HOMES

Prioritise wellness and sustainability with our Healthy Homes approach – designed to improve air quality, light, and overall comfort in every corner.

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Interior of a modern living room and kitchen area at night with people preparing food and setting the table, large glass windows showing the dark night sky, and contemporary furniture and artwork.

ARCHITECTURAL CONSTRUCTION

Bring your architect’s vision to life with precision. Our expert team delivers complex builds with clarity, care, and exceptional craftsmanship.

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Two men in matching black t-shirts and shorts are standing in a bright, white kitchen, smiling and having a conversation.

PROJECT MANAGEMENT

From design to delivery, we manage every detail of your build to ensure a smooth, on-time, and on-budget build that reflects your vision.

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Modern house with large glass windows and black metal siding, overlooking a garden with rocks and trees, under an overcast sky.

GRANNY FLATS

Create flexible, modern living spaces with our custom-designed granny flats – ideal for multigenerational living, guests, or extra income.

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A man kneeling on the ground installing a verticale support beam between a brick and stone wall, with a power drill in his hand and construction tools around him.

CHALLENGING SITES

No site too steep or complex – we specialise in building on challenging terrain with smart solutions that maximise space, access, and design potential.

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