Peaceful outdoor deck with sweeping ocean panoramas ideal for granny flats in Bilgola Plateau

GRANNY FLATS

BILGOLA PLATEAU

AGATHĒ builds quality granny flats in Allambie Heights, bringing expert craftsmanship and Northern Beaches knowledge to create spaces that add value and work for your lifestyle.

GRANNY FLATS IN BILGOLA PLATEAU

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.

Airy dining space with seamless access to oceanfront terrace for granny flats in Bilgola Plateau
Striking black granny flat in Bilgola Plateau with floor-to-ceiling glass surrounded by native greenery
Breathtaking coastal panoramas from glass-walled living space in granny flats for Bilgola Plateau
Contemporary black granny flat in Bilgola Plateau elevated among trees with outdoor entertaining space
Designer granny flat in Bilgola Plateau featuring large windows and protected outdoor entertainment area
Metal-framed granny flat in Bilgola Plateau with contemporary patio and established woodland backdrop

WONDERING WHERE TO START?

Perched on the elevated plateau between Newport and Avalon, Bilgola Plateau offers spectacular ocean views, bushland surrounds, and a strong sense of community. Many homes, from classic coastal cottages to contemporary architect-designed residences, sit on generous blocks with natural beauty and privacy. Whether you need a compact studio, a spacious two-bedroom home, or a dedicated office space, we design and build granny flats that respond to the area's unique topography and coastal character while creating independent living that adds comfort, function, and property value.

DISCOVER OUR SERVICES

HOME RENOVATIONS

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

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.

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.

ALTERATIONS & ADDITIONS

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

HEALTHY HOMES

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

ARCHITECTURAL CONSTRUCTION

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

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.

GRANNY FLATS

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

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.