Home Extensions Sydney That Grow With You
Add a level. Build up. Stay where you love.
Need more space but don’t want to move?
A custom home extension could be the perfect solution. Whether you’re adding a first floor, second storey or just need more room to breathe, we help Sydney families expand their homes without the stress.
At First Floor Additions, we specialise in extensions that work with your existing home, not against it. We design and build thoughtful upper-level extensions that bring more comfort, better layout, and real value to your property.
Smart, Seamless Home Extensions in Sydney
A home extension is more than just extra space. It’s a way to future-proof your home for your growing family or lifestyle without giving up the location you love. We help you get the most out of your block by building up, not out.
Whether you’re short on space, battling block restrictions, or simply want to make your home work better, we’re here to help.
We offer:
- First floor additions Sydney
- Second storey additions Sydney
- Upper level extensions Sydney
- Design-and-build home extensions Sydney-wide
Why Building Up Makes Sense
Many Sydney homeowners are turning to vertical extensions to solve their space problems. Here’s why:
- Keep your backyard
No need to sacrifice your garden or outdoor space. - Work with your block
Ideal for smaller or sloped blocks where ground-floor extensions aren’t practical. - Improve functionality
Add extra bedrooms, bathrooms or living space that actually suits your lifestyle. - Cost-effective upgrade
Building up can offer better value per square metre than moving or extending outward.
With more families looking to add a level in Sydney, a smart second-storey extension can completely transform your home without the hassle of moving.
A Complete Service You Can Trust
We’re not just a builder. We’re a full design-and-build team that handles everything under one roof, from concept planning to construction. Our team takes care of:
- Architectural design tailored to your home
- Council approval for first-floor additions and extensions
- Fixed-price quotes with no hidden costs
- A smooth, well-managed construction process
We’ve worked with families across Sydney, from the Inner West to the Hills District, delivering extensions that feel like they’ve always been part of the home.
Design
Renovate
Extend
How It Works
- Chat about your goals
We’ll discuss your vision, lifestyle needs, and what’s possible for your site. - Plan your extension
We’ll prepare concept designs, help with council approval, and give you a clear quote. - Build your new space
Our experienced team manages the entire build, keeping you informed every step of the way.
Enjoy your upgraded home
Once complete, you’ll have a beautiful, functional extension that works for your family now and into the future.
What Our Clients Say
“This business did our bathroom renovation last year. We were very happy with the work; the job came in under budget and within the time specified. Recommend this business.
– Paul and Carmen
“We used Glenn to remodel a bathroom and remodel a laundry, extending it to add a bathroom. Working with Glenn was easy and congenial. We were informed and advised well at every level. Glenn not only fulfilled his obligations but also offered relevant advice from his experience and always with good humour. We have called on Glenn for additional jobs since and will continue to do so.”
– Janice and Andrew
Let’s Plan Your First Floor Addition
If you’re planning a first floor addition in Sydney and want to work with a team that handles it all, design, council approval, build, and everything in between, we’d love to hear from you.
Call (02) 8896 4324 or get in touch here to request a personalised consultation.
We’ll help you explore the best first-floor addition ideas for your home and provide a clear quote with no hidden fees.
Frequently Asked Questions
It depends on the size, layout, and materials, but most builds start from around $150,000. We offer early-stage concept and budget reviews to help you understand the full cost before you commit.
Yes. Council approval for first floor additions can be complex, but we manage it all for you, including design documentation, compliance, and submissions.
Not always. Depending on the scope of work, many homeowners stay in their homes throughout the build. We’ll walk you through the logistics upfront.
Once design and approvals are complete, construction typically takes 4 to 6 months. Your project manager will keep you updated at every step.
Want to stay local and upgrade your space the smart way?
Get in touch with the best first floor addition builders in Sydney.
Call (02) 8896 4324 or visit firstflooradditions.com.au
Move or Relocate?
At first this may seem like the easiest and cheapest option. If you don’t like the neighborhood it is maybe a no brainer. However if you love where you live this may not be a consideration. Often movers don’t calculate the true cost of moving. With stamp duty, sales, relocation implications, bridging finance and moving can be an expensive alternative.
Moreover costs are not realized until it’s too late. These costs will never be recovered. They could be 50% of the cost of renovating the existing home. Savvy home owners are discovering that in many instances the best option is to invest into their existing home, therefore enjoying both financial and lifestyle gains.
There is also the cost of upgrading to a bigger home. Another problem can be markets can change quickly which in the long term is not an issue. However in the short term when you’re buying and selling it may work to your advantage or cost you an “arm or a leg”.
Extend or Renovate
If you love where you live, this is one of the two choices you are left with. There is (and has been) a large amount of marketing dollars to convince the public that this is the most cost effective way to go and quote square metre rates to add grey to this area.
This in fact could not be further from the truth and in fact if a square metre rate was the answer we would all be living in factories as this is in fact the cheapest to build per m2.
Living through a renovation will certainly have its challenges.
Knock Down or Rebuild
In a very limited number of cases this will be the only option. If the existing home has major structural defects (not minor maintenance issues) it will certainly need to be considered. Whilst KDR has been marketed as the be all and end all, is it?.
It is definitely easier for the builder however, Is it best for you? Knocking down and building new is also a very expensive option. It will cost from $500000 to $700000 to complete. There is the additional demolition, landscaping, rent and moving cost. Not to mention the cost of building an entire home from scratch.
Unfortunately though, new homes are only ever brand new the day they are finished. From that day on the new home can continue to depreciate (land appreciates and homes depreciate, ask the bank) at a much faster rate than existing homes, year after year, for up to five to ten years. This is due to housing styles going in and out of fashion, depreciation, as well as the unavoidable difference between cheap, modern materials and durable, long-lasting older home construction.