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Sydney Home Addition Builders You Can Trust
Why leave a home you love when a simple addition or alteration can make it suit your changing lifestyle? Whether you need more room for a growing family or you just want to add value, a home addition can take your living space to the next level.
Firmus Building is the Sydney home additions and alterations expert you can trust to help you navigate the building process. We can help you maximise space with a new layout, modernise outdated interiors, or add a deck to enjoy the great outdoors.
For expert alterations that blend in seamlessly with your existing property, choose the home addition contractors at Firmus Building.
Alterations and Additions Made Simple
Already love where you live? With over three decades of experience in alterations and additions, our expert team can help you make your home even better. We’ll help you:
- Add a second storey: get more space without expanding your home’s footprint or giving up your backyard.
- Build an extension: design the spacious living room of your dreams, or add new bedrooms for a growing family.
- Create multigenerational living: add a granny flat with all the creature comforts so your family can live together comfortably.
- Renovate: update an old home with modern features and smart upgrades that improve your lifestyle and add value.
The Firmus Building Difference House Alterations Delivered With Care
Making alterations and additions can be a time-consuming process, but the team at Firmus Building is here to make it as stress-free as possible. We’ll take the time to understand your vision before planning out the project in a way that minimises disruptions and keeps your budget on track.
As second-generation family builders, these projects aren’t just a job for us – they’re a labour of love. An alteration is your chance to tailor the home you already love to better suit your lifestyle, and we’ll keep you involved every step of the way to make sure your dream becomes a reality.
Whether you want seamless entertaining areas or extra living space, partner up with Firmus Building to create a home that’s uniquely yours.
Explore Our Past Sydney Home Alterations and Additions
Frequently Asked Questions
What’s the difference between a home alteration and an addition?
A home alteration involves modifying your existing floor plan — such as removing walls, updating layouts, or redesigning living spaces.
An addition extends your home’s footprint, adding new rooms or levels. Many Sydney homeowners combine both to modernise their home and add more space.
Do I need council approval for a home alteration or addition in Sydney?
Many alterations and additions in Sydney require approval, depending on the project’s scope. Smaller internal works may be exempt, while extensions, second-storey additions, or structural changes often require formal approval. We’ll guide you through the process and manage all required documentation with your local council.
Can I live in my home during the renovation?
In many cases, yes, although it depends on the scale of the work and safety requirements. For major additions or structural changes, temporary relocation may be recommended. We’ll discuss all options to minimise disruption to your household.
Will my home addition match the existing style of my house?
Absolutely. We take great care to ensure that new structures blend seamlessly with your home’s existing architecture, materials, and finishes.
Explore Our Build Areas
Daniel and Chris Touma lead a team dedicated to delivering bespoke homes, renovations, and additions across Metro Sydney. From the Inner West to the Eastern Suburbs, North Shore, and Sutherland Shire, Firmus building brings transparency, craftsmanship, and care to every project
Explore how we can help bring your dream home to life. Built with integrity, precision, and personal attention from start to finish.
