Serene deck with ocean outlook and comfortable interior living space for granny flats in Mona Vale

GRANNY FLATS

MONA VALE

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

GRANNY FLATS IN MONA VALE

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.

Refined dining room with oceanfront balcony and sculptural accents ideal for granny flats in Mona Vale
Sophisticated black granny flat in Mona Vale featuring expansive windows and established landscaping
Open kitchen with sweeping water views and cloudy coastal skies for granny flats in Mona Vale
Contemporary black granny flat in Mona Vale with glass-enclosed balcony and natural greenery surrounds
Modern granny flat in Mona Vale with rooftop terrace seating and leafy tree backdrop
Sleek granny flat in Mona Vale with large glazing and contemporary outdoor seating area

WONDERING WHERE TO START?

Centrally located on the Northern Beaches, Mona Vale offers vibrant village living with pristine beaches, the iconic Mona Vale Basin, and excellent shopping and dining. Many homes, from original beach cottages to modern family residences, sit on generous blocks with development potential. Whether you need a compact studio, a spacious two-bedroom home, or a dedicated office space, we design and build granny flats that suit Mona Vale's relaxed coastal lifestyle 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.