Custom Granny Flats, Designed for Modern Living
At Crestani Built, we specialise in crafting granny flats that combine comfort, style, and functionality, perfect for extended family, rental income, or a private retreat. From concept to completion, our expert granny flat builders manage every stage of your project with transparency, attention to detail, and high-quality workmanship.
Whether you’re looking to build a granny flat for independent living or to enhance your property’s value, we deliver spaces that are stylish, durable, and designed around your needs. We provide clear guidance on the cost of a granny flat, ensuring your project stays on budget without compromising on quality.
Your Trusted Granny Flat Builders
Designed for Modern Living
At Crestani Built, we specialise in designing and building granny flats that blend functionality, comfort, and style. From planning to handover, our expert granny flat builders deliver quality workmanship, clear communication, and lasting value.
We provide transparent advice on the cost of a granny flat and ensure every project meets your lifestyle, budget, and expectations.
Why Homeowners Choose Crestani Built for Granny Flats
Personalised Design
Every granny flat build is tailored to your space, lifestyle, and budget for a result that feels truly your own.
End-to-End Management
From planning and council approvals to handover, our experienced granny flat builders handle every stage with precision and care.
Quality Craftsmanship
We use premium materials and proven building techniques to deliver granny flats that are durable, stylish, and built to last.
Transparent Pricing
We offer honest guidance on the cost of a granny flat, so you can plan confidently without unexpected surprises.
What We Offer?
Custom Granny Flat Design
We create personalised granny flat designs that maximise space, comfort, and functionality. From layout to finishes, every detail is crafted around your lifestyle and property needs.
Granny Flat Construction
Our experienced granny flat builders handle everything from site preparation to completion, ensuring your new space is built with quality craftsmanship and precision.
Affordable Granny Flats
We make it easy to build within budget with transparent guidance on the cost of a granny flat. Get premium quality without the premium price tag.
Luxury Granny Flats
Upgrade your property with a modern, self-contained retreat featuring high-end finishes, open-plan living, and custom styling all built by Sydney’s trusted granny builders.
Dual Living & Investment Builds
Turn your extra space into income with a dual-living setup. Our granny flat builders specialise in smart, profitable property extensions designed for comfort and long-term return.
Extensions & Additions
Need more room? Our expert team also handles home extensions — from single storey extensions to full double storey home additions, adding space and value to your property.
Hear It From Our Customers
From small updates to full house renovations, our clients appreciate our clear communication, reliability, and expert craftsmanship that set us apart from other local builders.
But don’t just take our word for it, hear from homeowners who’ve trusted us to turn their visions into reality and discover why we’re one of the most recommended renovation companies in the region.
From the first consultation to the final touches, Crestani Built delivered on every promise. Our home extension is exactly what we wanted - spacious, modern, and beautifully finished!
Crestani Built transformed our outdoor space with a beautiful garden path. The work was completed on time, and the finish is excellent. A great team to work with!
I couldn’t be happier with my loft conversion. The attention to detail and quality of work were outstanding. Crestani Built made the whole process smooth and stress free!
Crestani Built did an incredible job on our kitchen. The craftsmanship was top-notch, and the team was professional from start to finish. Highly recommend!
Brilliant service from start to finish. The team was professional, communicative, and the results exceeded my expectations. My new bathroom looks amazing!
Fantastic workmanship! The team renovated our bathroom with precision and care. It now feels like a luxury space. Would definitely use Crestani Built again.
Our Work
Granny Flats & Home Extensions Reimagined
Every granny flat and home extension we deliver tells a story of craftsmanship, precision, and care. From compact backyard builds to modern two-storey extensions, each project is thoughtfully designed to enhance comfort, functionality, and value.
As trusted granny flat builders and home extension specialists, we bring the same commitment to design excellence, transparency, and quality, ensuring every build blends seamlessly with your home’s existing style.
Explore our recent projects to see how we combine innovation, practical design, and lasting quality to create granny flats and home extensions that truly redefine modern living.
Expertly Built Home Extensions that Elevate Everyday Living
Every home extension we create is more than additional space, it’s a seamless blend of style, structure, and craftsmanship. From single storey extensions to double storey additions, our builds are designed to enhance your home’s comfort, value, and modern appeal.
At Crestani Built, we take pride in delivering home extensions that feel natural, not added on. Whether you’re after a modern home extension, an open-plan living expansion, or a custom house addition, our expert extension builders ensure every project is functional, timeless, and built to inspire.
Expand Your Home with Style and Purpose
Designed for Space. Built for Life.
At Crestani Built, we believe a home extension should blend seamlessly with your existing architecture, enhancing both space and lifestyle. Our experienced home extension builders design and construct with precision, functionality, and a focus on lasting quality.
From single storey extensions to double storey additions, we handle every aspect from concept design to final build, ensuring a smooth and transparent process. Whether you need more living space, a new bedroom, or a modern open-plan layout, our expert team delivers extensions that look natural and feel effortless.
✓ Custom Home Extension Designs
✓ Experienced Extension Builders
✓ Quality Workmanship & Transparent Communication
Expand Your Home Beyond Walls
Your home deserves more than stunning interiors it deserves an outdoor space that elevates your lifestyle. At Crestani Built, we bring expert craftsmanship and design precision to every outdoor home renovation, transforming unused areas into beautiful, functional extensions of your home.
From backyard renovations and patio builds to complete house exterior renovations, we create seamless indoor–outdoor flow with modern finishes and timeless appeal. Whether you’re envisioning a new outdoor entertaining area, a custom patio extension, or a stylish outdoor space renovation, our team ensures every detail enhances comfort and adds long-term value.
As trusted patio builders and outdoor renovation specialists, we design exteriors that combine practicality with elegance, built for living, and crafted to last.
Designed for Outdoor Living You’ll Love
Ready to Start Your Granny Flat or Home Extension Project?
Turn your vision into reality with Crestani Built, Sydney’s trusted team of granny flat builders and home extension specialists. Whether you’re expanding for family, adding rental potential, or creating your dream space, we bring craftsmanship, transparency, and design precision to every build.
From a custom granny flat build to a seamless single or double storey extension, our expert team handles everything from design to completion — ensuring your new addition complements your lifestyle and enhances your property’s value.
Let’s create a space that feels like home, built with quality that lasts.