House Extensions Brisbane
Add the space you need without the hassle of moving - seamless extensions that feel like home
Delivery Extensions that blend perfectly with your home
On Time No surprises, just quality workmanship
A house extension in Brisbane should feel like it was always part of the home, not bolted on as an afterthought, and getting extensions for homes right comes down to thoughtful design working with your existing house rather than against it. If you’re weighing up a ground-floor extension for extra living space against a second-storey addition, the right answer depends on your block, budget, and how your family wants to live.
Bishop Construction has delivered house extensions across Brisbane’s Northside and Southside for over 20 years, family-owned and led by Barney since 2004. QBCC Licence 1074234, full member of Master Builders QLD. Every extension starts with a free consultation and a transparent, fixed-price quote.
Ground-Floor Vs Second-Storey Extensions, Which Suits Your Home
A ground-floor extension project usually costs less per square metre and is more straightforward to build, while a second-storey extension suits blocks where backyard space needs to be preserved. Our team at Bishop Construction talks you through which fits your home and budget at the consultation stage.
Every block carries its own quirks, and the right design decision often comes down to what’s already sitting under the roof. Homes with generous space underneath, like many older Queenslanders, tend to suit second-storey extensions, while new homes on tighter blocks sometimes gain more living space by building out instead. Builders look at footings, drainage and how the new addition fits the way a household actually spends its time, and builders will usually flag structural limits early rather than partway through the projects.
Costs vary with each project. A ground-floor build tends to move faster since there’s less structural work involved, while second-storey projects need extra time for engineering checks before building can begin, and both types of building projects suit different homes depending on what the family needs. The total cost reflects that extra work, so understanding the likely cost early avoids surprises once a project is underway. Whether you’re planning house extensions for a growing family or simply want a new everyday living space, Bishop Construction talks through the design, the likely costs and the build process before you commit.
Thinking about extensions for your own Brisbane home? Barney and the team can walk you through the numbers for your block.
What Drives The Cost Of A House Extension In Brisbane
Ground-floor extension pricing on our projects typically cost around $2,500 to $4,000 per square metre, depending on finishes, complexity, and site conditions. Kitchen and bathroom inclusions, structural requirements, and council approvals all factor into the final fixed-price quote.
Getting a fixed-price figure is one thing, but what that number actually buys can differ a lot between builders. Some quotes bundle in higher-spec finishes for the kitchen or bathroom from the start, while others leave those as separate costs to add later, so it pays to ask exactly what’s included in extensions before comparing figures side by side.
Staying in the home while building work happens is also worth factoring in early. A ground-floor extension often lets a family keep living in most of the house throughout, whereas larger building jobs might mean shifting rooms around or living with reduced access to parts of the property for a stretch. This affects timing as much as it affects cost, and it’s worth raising with your builder before locking anything in.
Bishop Construction sets out these details clearly in every quote, so there are no surprises once the new space starts taking shape. Want a clearer picture of what your project would involve? Reach out and the team can talk you through it.
Designing An Extension That Feels Like It Was Always There
Matching rooflines, materials, and window styles to the existing home is what makes an extension feel cohesive rather than obviously added on. Our design approach starts with the existing house, not a generic extension template.
Council planners often look closely at how a new addition sits against the streetscape, especially in older Brisbane suburbs where character homes are common. A design that respects the original roofline and proportions can make the approval process smoother, since it shows the building fits within the existing neighbourhood rather than standing out awkwardly from the street.
This attention to detail carries a cost, and it’s worth budgeting for from the outset rather than treating it as an add-on once building and extensions are underway. Matching brick tones, window proportions, and trim details typically pushes costs higher than a simpler, mismatched build, but it pays off in how naturally the new space reads as part of the home rather than an obvious extension.
For the people living in the home, the payoff is a house that feels whole again, not two structures stitched together. Our team of builders at Bishop Construction factors this into the design from day one, so the finished build looks like it was never any other way.
Extending A Queenslander Without Losing Its Character
Extending a Queenslander means protecting the front-facing character of the home, often through rear extensions, while adding the space a growing family needs behind it.
Re-stumping or adjusting the underfloor height is often part of the picture too, since many older Queenslanders have settled unevenly over the decades. Levelling the original structure before tying in a rear addition adds to project costs, but skipping it usually means the join between old and new sits awkwardly, with floors that don’t quite meet.
Verandahs deserve early attention as well. They’re often the most recognisable part of a Queenslander’s front face, so any rear extension needs a stair and access plan that doesn’t compromise that street view. Getting this wrong can push costs up later if access needs reworking once the build is underway.
Bishop Construction looks at these structural details from the outset, so a Queenslander keeps its character while gaining the space a family needs.
Our Process For House Extensions, From Design To Handover
Step 1: Consultation and design. We assess your home and talk through your goals, budget, and costs.
Step 2: Approvals and fixed pricing. Council approvals are managed and a fixed-price contract agreed.
Step 3: Construction to handover. One team builds the extension, with consistent communication throughout.
Managing Council Approvals For An Extension
Extensions generally require council approval, and requirements can vary depending on your site, block size and any heritage overlay. We manage this process as part of the project.
Extending On A Sloping Or Narrow Brisbane Block
Sloping and narrow blocks need extension designs that account for retaining walls, drainage and access constraints. Our experience with Brisbane’s difficult sites means these factors are planned for from the design stage.
What Brisbane Homeowners Say About Extending With Bishop Construction
Homeowners regularly tell us that transparency around cost, knowing where the money is going, made the biggest difference to how confident they felt through the project.
How Long A House Extension Typically Takes
Timelines vary with the size and complexity of the extension, and we provide a realistic schedule as part of your fixed-price quote.
Common Questions About House Extensions In Brisbane
What’s the typical cost per square metre?
Ground-floor extensions typically run around $2,500 to $4,000 per square metre, depending on scope.
Can you extend a Queenslander without losing its character?
Yes, this is a regular part of our extension work.
Do you manage council approvals?
Yes, as part of the extension process.
Ready To Plan Your House Extension?
Contact Bishop Construction for a free consultation and transparent, fixed-price extension quote. We reply within 24 hours to every enquiry.
