First Floor Additions Sydney
Add Space, Stay Put, And Love Where You Live Need more room but don’t want to leave your neighbourhood?
A first-floor addition is the perfect way to expand your living space without giving up the garden or your location. At First Floor Additions, we help Sydney families stay in the homes they already love, while making them more practical, spacious, and suited to the way they live today.
From concept to completion, we take care of everything. No handballing between trades, no guesswork, just a clear process, expert advice, and a home you’ll love coming back to.
Why Go Up Instead Of Out?
Adding a second storey to your home doesn’t just add space, it can add value, comfort, and long-term liveability. And for many Sydney suburbs where block sizes are tight, going up just makes sense.
- Keep your backyard and outdoor space
- Add extra bedrooms or a separate living zone
- Improve flow and layout
- Increase property value without moving suburbs
- Avoid the cost and stress of buying and selling
If you’re planning for a growing family or future flexibility, a first-floor addition is a smart, tailored solution that works with what you already have.
What’s Included In Our Full-Service Builds
We’re a design and build team, which means everything is handled under one roof. No chasing down council paperwork or trying to coordinate different trades, we manage the lot.
Here’s what’s included:
- Concept design and architectural drawings
- Costing and budget review with transparent breakdowns
- Council approval for first-floor addition projects
- Structural engineering, planning, and documentation
- Construction by licensed, experienced builders
- Dedicated project manager from start to finish
You’ll get detailed first-floor addition quotes, honest communication, and a clear plan before any work begins.
How Much Does A First Floor Addition Cost In Sydney?
Every home is different, but most first-floor additions in Sydney start from around $150,000, depending on the size, finishes, and complexity of the build. That cost can increase if you need to reconfigure the ground-floor layout, upgrade structural supports, or want premium finishes.
At First Floor Additions, we provide transparent, realistic pricing upfront. Our concept and budgetary review service is designed to help you understand what’s possible for your home and your budget, no surprises down the track.
Looking for a reliable estimate? We’re known for our accuracy and transparency when it comes to quoting.
Design
Renovate
Extend
Why Homeowners Choose Us
We’re proud to be one of the most trusted names in Sydney when it comes to first-floor additions. Here’s why homeowners come to us and refer us to others:
- Over 30 years of experience building across Sydney
- Specialising in first-floor and second-storey additions
- Detailed planning and fixed-price contracts
- Full council and compliance management
- Quality craftsmanship with minimal disruption
- Local team, fully licensed and insured
We’re not just builders; we’re top-storey addition specialists focused on making the process easier, faster, and better for you.
See What’s Possible
Browse some of our recent projects across Western Sydney, the Hills District, and surrounding suburbs to see how a first floor addition can completely change the way a home works.
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.