Trusted Granny Flat Builders Sydney
Smart Space Solutions | Award-Winning Quality | Delivered with Pride and Precision
At Monument Projects, we’re not just granny flat builders —we’re transformation specialists. Whether you want to expand your property with a high-return rental, accommodate extended family, or create a private office or retreat, we help you build a granny flat that complements your lifestyle and adds lasting value.
With decades of experience in home renovations, new home construction, and custom additions, our experienced team has delivered hundreds of completed projects across Sydney. Our secret? Our secret is a proven, hassle-free, and fully managed process—from in-house architects and approvals to final selections and handover.
We believe great design lives in the details. Every granny flat we build reflects your vision, tailored to your budget, block, and goals. Expect stylish finishes, smart layouts, and standard inclusions that other flat builders treat as extras.
This is more than construction — it’s about putting your plans into motion and your dreams into reality.
Let’s Get Your Home Transformed!
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Why Granny Flats Are the Smartest Investment for Modern Sydney Homeowners
Granny flats have become a smart property move for Sydney homeowners in a housing market where flexibility and functionality are more important than ever. Whether you’re seeking more money through rental income, looking to support ageing parents, or wanting to make better use of unused backyard space, the benefits are clear, immediate, and long-lasting.
The demand for granny flats has skyrocketed across urban and suburban Sydney, and for good reason. These self-contained dwellings provide an ideal solution for downsizers, first-time investors, or families wanting to live under one roof while maintaining privacy. They're legal, versatile, and quicker to build than a full extension — all without the complexities of selling and relocating.
Our clients include savvy investors, retired couples, growing families, and business owners creating detached studios and home offices. Many combine their granny flat project with larger home renovations, creating a cohesive, value-packed transformation across the entire block.
We’ll cater to your goals, budget, and lifestyle from inspiration to installation.
From Concept to Completion
Our Award-Winning Granny Flat Build Process
When building a granny flat, the last thing you need is confusion, delays, or hidden costs. We deliver a streamlined, proven process backed by an
award-winning team of experienced granny flat builders, project managers, and in-house architects— all working together to bring your vision to life.
Free Site Assessment & Concept Design
Every successful build starts with smart planning. Our team visits your property to evaluate site conditions, access, services, and orientation. We’ll discuss how you plan to use your granny flat—whether for family, rental, or business—and offer custom design ideas to match your goals.
Layout Planning, Approvals & Compliance
Our in-house architects and planning experts create a practical and aesthetically pleasing layout, tailored to suit your block, preferences, and council requirements. We take care of all approvals, zoning regulations, and compliance on your behalf.
Fixed-Price Quote & Contract Transparency
Our proposal does not include ambiguous allowances or budget overruns. We provide a fully detailed, fixed-price quote outlining every inclusion, material, and milestone. You’ll also receive various upgrade options, colors, and finishes to suit your style and budget
Construction Begins with Dedicated Project Managers
Once you're ready to start building, we assign a dedicated manager to guide your project through every construction stage. Expect timely updates, clean sites, and professional crews that deliver at the high standard our clients know and trust.
Final Touches & Handover of Your Completed Project
This is where your dream granny flat becomes a reality. We add the finishing touches—from clever storage to premium interior design details—and ensure everything is compliant and ready for occupancy. We deliver your home away from home punctually and without any surprises.
Enjoy your brand-new granny flat, crafted with care and built to stand the test of time.
What Sets Our Granny Flat Builders Apart from the Rest
Selecting the appropriate granny flat builders can make a significant difference between a stressful construction process and a smooth and successful outcome. We’ve earned our reputation as a reliable, innovative, and client-focused company by consistently delivering high-quality granny flats that exceed expectations and add long-term value to your home.
With over 40 years of experience in home renovations and custom design projects, our team has worked across various sites, families, and budgets. We’re fully licensed and insured to build Class 1a dwellings, guaranteeing compliance, durability, and craftsmanship.
Unlike other builders who rush through projects or outsource their design, we take pride in offering in-house planners and a fully integrated design process. Our experienced designers and project managers work closely with you from day one, helping you browse plans, select colors, and refine finishes that suit your space and goals.
We don’t just focus on construction; we focus on people. Our promise is simple: clean worksites, transparent timelines, and respectful trades who treat your property as their own.
Get a high-standard build with zero shortcuts — just craftsmanship and peace of mind.
Design Matters — Creating a Dream Granny Flat That Feels Like Home
Great design isn’t just about what looks good — it’s about how a space works, feels, and supports your day-to-day life. That’s why our granny flat design process starts with your lifestyle and ends with an entirely livable, high-performing home that enhances your property and brings peace, comfort, and joy.
Our collaborative approach ensures every detail aligns with your vision. Whether you're building for a relative, planning to lease, or creating a creative retreat, we’ll guide you through custom design options that work — from the big-picture layout to the tiniest finishing touch.
Choose from one-bedroom, two-bedroom, or studio-style layouts — all with full kitchens, modern bathrooms, laundry setups, and ample storage. Love open-plan living? Need better natural light flow? Our team designs spaces based on your lifestyle preferences or leasing needs.
Sustainability and functionality are inseparable. We use energy-efficient materials and smart storage solutions, and build with long-term durability in mind. And the finishes? They're stylish, sophisticated, and aesthetically pleasing, blended with neutral palettes and on-trend colours that stand the test of time.
Expect form and function in perfect balance — a granny flat built to impress.
Types of Granny Flats We Build Across Sydney
No two families—or blocks—are the same. That’s why Monument Projects offers a range of granny flats to suit your needs, land shape, and lifestyle goals. Whether you're supporting elderly parents, housing your adult children, or adding income-generating accommodation to your home, we have a purpose-built solution that fits.
Our award-winning team specialises in:
Detached Granny Flats
This is the most popular and flexible option available. These self-contained dwellings offer total privacy and are ideal for multi-generational living, tenants, or guest accommodation. They are fully independent and feature their kitchen, bath, and access.
Attached Granny Flats
These flats are ideal for individuals seeking to create a space that seamlessly integrates with their existing home. These flats share a wall with the main house but still offer privacy, making them a great choice for families supporting an ageing granny or older child.
Above-Garage Flats
Make the most of tight spaces with a second-level flat built over an existing or new garage. This design is especially popular on smaller urban blocks, delivering function without sacrificing yard space.
Custom Studio-Style Granny Flats
These flats are ideal for singles, couples, or those seeking a minimalist footprint. They are compact, beautifully designed, highly efficient, and often used by creatives, professionals, or downsizers.
Dual-Access Flats for Airbnb or Rentals
Designed with separate entries and independent utilities, these flats allow you to host tenants or guests without impacting your primary living space. They're rental-ready and fully compliant.
Our smooth process, expert approvals, and design finesse support every flat, regardless of its type. We take pride in delivering quality builds that look excellent and add long-term value.
Explore the perfect granny flat solution for your block, family, and future.
The Benefits of Building a Granny Flat with Monument Projects
Adding a granny flat isn’t just about space — it’s about smart planning, long-term thinking, and real returns. When you choose Monument Projects, you're working with a company that delivers more than just construction — we provide peace of mind.
Our granny flats consistently increase the value and liveability of Sydney properties. Whether you’re upgrading your own home, investing in rental potential, or helping your granny age in place with dignity, we’ve got your goals covered.
Here’s what you can achieve:
Boost Market Value
A professionally designed and built granny flat enhances resale appeal and appraised property value.
Rental Income
Lease it out to long-term tenants or short-stay guests for passive income.
Family Support
Keep loved ones close, especially ageing parents or young adults, without sacrificing independence.
Reduce Living Costs
Save on aged care, student accommodation, or costly property purchases.
Complement Major Renovations
If you're already improving your home, now is the perfect time to incorporate a flat into the plan.
Our team makes the entire process seamless—from design and approvals to build and final handover. You're preparing not just for now but also for the future.
One smart investment. Endless possibilities. Let’s talk about your granny flat build.
Ready to Build Your Dream Granny Flat? Let’s Get Started!
We’re proud to be the builder Sydney families turn to when they want to transform their backyard into something truly functional, beautiful, and high-value. Whether you’re adding a rental unit, creating space for loved ones, or simply planning ahead, we’re here to help you start the journey with clarity and confidence.
Your first step is simple: book a free consultation and site inspection with our expert team. We’ll visit your property, assess the layout and access, and discuss your goals in detail. You’ll receive a concept sketch, a transparent quote, and a detailed breakdown of your build timeline, inclusions, and options.
You can also browse our completed projects to get ideas, compare layouts, and feel confident about the design and finishes you can expect. We’ll answer your questions, walk you through our services, and help you secure a start date that suits your schedule.
Call (02) 8598 8594 or click here to book your free granny flat consultation today.
