Second Storey Extensions Brisbane
End-to-End Solutions
Quality Craftsmanship
Reliable Finish Times
Direct Builder Engagement
Call Diana To Get A Free Estimate
(07) 3130 0309
Second Storey Extensions Brisbane
End-to-End Solutions
Quality Craftsmanship
Reliable Finish Times
Direct Builder Engagement
Call Diana To Get A Free Estimate
(07) 3130 0309
Second Story Extension Builders Brisbane
Need more room but want to keep your backyard intact?
When your home starts to feel tight but your location still feels right, building upward can change how you live. A second storey extension creates the extra space you need while keeping your backyard and Brisbane lifestyle intact.
Our second storey extension service is for Brisbane homeowners who want more space without giving up the lifestyle they love. From inner city suburbs like Woolloongabba to outer suburbs across Brisbane, we work with brick veneer homes, post-war houses, and modern single-storey builds that suit second storey additions.
Why choose us for your double story extension project?
- End-to-End Solutions – We handle the full second storey extension process, from design and approvals through to construction.
- Quality Craftsmanship – Your second level is built with care by experienced trades who understand structural upgrades and finishing details.
- On-Time Delivery – Clear planning and communication keep your project moving smoothly and on schedule.
- Local Family Business – Work directly with a Brisbane builder who takes a hands-on, personal approach to your home.
Make room for what’s next while keeping the home, yard, and lifestyle you already love.
Call us today for a 100% free builder consultation and cost estimate!
Call Diana To Get A Free Estimate
(07) 3130 0309
Don’t get lost in the maze of second storey extension planning and execution.
Navigating the design, engineering, approvals, and construction involved in a second story addition can quickly feel overwhelming. Without a cohesive, end-to-end approach, homeowners often find themselves juggling multiple consultants and trades, leading to confusion, stress, and project delays.
Seamless Second Storey Extension Solutions
When you’re considering a second storey extension, it’s normal to feel torn between excitement and uncertainty. You might be imagining the extra space and how it could change your daily life, while quietly worrying about approvals, timelines, budget blowouts, and whether everything will come together the way you hope. For many homeowners, the stress doesn’t come from the build itself, but from not knowing what comes next, whether it will be delayed or end up costing much more than you planned for.
That’s where having the right team beside you really helps. Instead of trying to juggle a host of independent professionals and trades and dealing with the local council for approvals, plus balancing work, family, and everyday life, you have one experienced team coordinating the entire end to end process for you. You’ll know what’s happening next, who’s handling it, and when key stages are coming up, and your project costs before construction even begins, making the whole process more organised and easier to live with.
Here’s what you can expect when you choose our team for your second floor addition project:
End to End Solutions
We manage every stage of your 2nd storey extension, from design and engineering through approvals and construction. This end-to-end approach keeps your project aligned and removes the stress of coordinating multiple consultants.
Quality Craftsmanship
Whether you’re adding a second story to a house or upgrading an existing upper level, your home is built by experienced trades who understand the structural demands of building upward.
On-Time Delivery
Clear planning and proactive communication keep your double story house extension moving forward without unnecessary delays. You’ll always know what stage your project is at and what’s coming next.
Direct Builder Engagment
As a Brisbane home extension builder, we help homeowners turn a single-storey into a two storey home with a hands-on, personal approach. Working directly with our team means your project is handled with care, clarity, and accountability from start to finish.
Building upward opens up new possibilities for your home and the way you live in it. With experienced hands guiding the process, the journey feels manageable and exciting.
Create the space you need right where you are.
Get in touch today for a 100% free builders consultation and estimate!
You're In Excellent Hands with ADG
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ADG Construction was easy to deal with and their tradies were very good. The extension we planned was very well done with any unexpected problems dealt with. The only problems we encountered were with the sub-trades who kept coming and going causing some delays due to them not completing their part of the job. Overall I would recommend ADG Construction for any renovation project. Very pleased with the end result. Our dream project coming to reality has been an overwhelming experience. Our renovation was huge with an extension over our media room, main bathroom, ensuite and powder room. This has substantially added value to our home. A massive thanks to Arron and his team; Alex and your staff ~ a job well done.
Lucia Townsend
12 November 2025 -
Alex and his team are great to deal with and I’d highly recommend them. There were some delays and hiccups along the way, but all issues were resolved without too much fuss. The home extension looks great and the family is happy.
John Ho
1 November 2025 -
Alex and his team do an amazing job, can’t recommend them enough
Jack Cuthbertson
5 June 2025 -
I recently engaged in a house extension project, went through 2 previous builders who weren’t fit for the job. After a quick search I contacted ADG, Alki specifically and obtained an estimate within 2 days. Extension went very smoothly and their trades had even done extra work after hours to make up for multiple rain days where no work was done. If anyone is looking to renovate ADG should be their first choice. Alki and Alex did a wonderful job.
Parea
9 May 2025 -
Loved working with these guys! Always communicated really promptly and very professional.
Vada Chant
8 May 2025 -
Would definitely recommend these guys for bathroom, kitchen and other renovations. The team are all very professional, genuine and honest compared to many others
Alex Dempster
26 October 2023 -
ADG have helped me build and design my dream home. They were super efficient and had great communication. We were always kept up to date with progress and were very lenient with our suggestions. ADG refuse to cut corners and are willing to spend more time and money to ensure everything was done professionally and according to the AS. 10/10. Would recommend to anyone wanting to renovate. Thank you so much to ADG and their responsive, friendly, experienced team
Thomas Clarke
26 September 2023 -
I provided ADG with a tough design and they surpassed my expectations - would highly recommend for any construction job. Very friendly service as well
Callum Wishart
26 September 2023 -
Working with ADG was frictionless and positive. Extremely satisfied with the amazing service and friendly support. The renovations turned out phenomenal
Hamish Nelson
26 September 2023 -
Had the team at ADG quote up and deliver an excellent final product on my town house renovation. Highly professional, with excellent attention to detail and excellent communication. Would 100% recommend anyone needing a ground up job or even just a basic renovation.
Chiara Castellani
26 March 2023
Call Diana To Get A Free Estimate
(07) 3130 0309
A Sample of Our Previous Projects
5 Steps to a Successful Double Story House Extension in Brisbane
Free Consult
Alex, the director and owner of the company, will meet with you onsite to discuss your goals, lifestyle needs, and whether your home is suitable for building upward. As a licensed builder and qualified engineer, Alex provides clear advice along with a free estimate outlining expected costs, timelines, and early guidance on your second story extension plans. This consultation is completely obligation-free.
Design
Based on your project scope, you’ll work with our architects or draughtsperson to prepare all required design documentation. This includes site layouts, floor plans, elevations, and detailed drawings that ensure your new level integrates seamlessly with your existing home. We collaborate closely with you during this stage and allow for key revisions so the final design feels right.
Documents
We manage the entire pre-construction process, including council approvals, building approvals, engineering, and any required soil testing. All coordination with certifiers and council is handled on your behalf. Once approvals are in place, we provide a fixed-price building quote so you have complete clarity before construction begins.
Construction
Our experienced team delivers the build efficiently while working to minimise disruption to your day-to-day life. You’ll receive regular progress updates throughout construction, with all work completed by licensed trades and signed off by an independent building certifier.
Enhanced Lifestyle
Step into a home that offers more space, improved functionality, and long-term value. Your completed second storey extension is built to last and backed by our workmanship warranty for added peace of mind.
Call Diana To Get A Free Estimate
(07) 3130 0309
6 Benefits of a Second Storey Addition
Keep Your Backyard Space
Build upward instead of outward and preserve valuable outdoor space for entertaining, pools, and Brisbane’s outdoor lifestyle.
Stay in the Location You Love
Avoid the costs and stress of moving while staying close to schools, work, transport, and established neighbourhoods.
Increase Property Value
A well-designed second storey can significantly boost your home’s value, especially in established Brisbane suburbs with limited land.
Ideal for Growing Families
Separate living and sleeping zones help growing families enjoy privacy, quieter bedrooms, and better daily flow.
Better Use of Smaller Blocks
Perfect for inner and middle-ring Brisbane suburbs where land sizes are limited and extending outward isn’t practical.
Capture Breezes and Natural Light
Elevated living spaces can take advantage of Brisbane breezes, improved airflow, views and better natural light.
Brisbane Second Storey Extensions FAQs
What is the cost of adding a second story to a house in Brisbane?
The cost of adding a second storey in Brisbane can vary widely depending on the size, design, and structure of your existing home, particularly in suburbs with older housing stock such as Camp Hill, Ashgrove, and Holland Park, where structural upgrades are often required. As a general guide, most two storey house extension projects fall somewhere between $200,000 and $450,000+.
Second storey projects typically cost more than ground-floor extensions because they involve structural upgrades, engineering, roof alterations, and additional approvals. Factors like bathrooms, staircases, access, and finish level will also influence the final price.
The best way to get an accurate figure is through a site inspection and tailored design, which allows costs to be clearly defined before construction begins. Call us on (07) 3130 0309 to organise a Free onsite builders consultation and estimate today!
How long does adding a second story take?
Most second storey extensions in Brisbane take 6 to 9 months from initial design through to completion.
This includes time for design, engineering, council approvals, and construction. The build itself often takes 3 to 5 months, depending on complexity, weather, and access. Homes that require significant structural upgrades or more complex designs may take longer.
What kinds of houses are most suited to 2nd storey additions?
Many Brisbane homes can support a second storey, but some are better suited than others when it comes to 2nd storey additions.
Common candidates include brick veneer homes, post-war houses, and modern single-storey builds with strong foundations and clear roof structures, often found in areas like Carindale, Mansfield, and Wavell Heights. Homes on flatter blocks with good access also tend to be easier and more cost-effective to build upward.
Is it better to raise and build under or add a second story?
It depends on your home, block, and goals.
Raising and building under is often ideal for high-set Queenslanders, commonly found in Brisbane’s older inner and middle-ring suburbs, especially where maintaining character is important. Adding a second storey is usually better suited to homeowners looking to convert single storey to double storey, particularly in suburbs dominated by slab-on-ground or brick homes where preserving backyard space is a priority.
A site inspection helps determine which option offers the best value and outcome for your property.
Should I add a second story or just extend out?
The right option depends on your block size, budget, and how you use your outdoor space. Extending out is often simpler and can be more cost-effective if you have plenty of land available and don’t mind reducing your backyard. It’s also a popular choice for families wanting open-plan living areas on the ground floor.
Adding a second storey is usually the better option when land is limited or when keeping your yard is important. It allows you to add significant space without changing your home’s footprint and can also improve privacy and separation between living and sleeping areas.
If you’re unsure which option suits your home, our article breaks down building up versus extending out in Brisbane.
Contact Us
(07) 3130 0309
