Deciding what to do with your home
Extension vs Knockdown-Rebuild
Keep the home you love and add to it, or start fresh with a brand-new build? For established homes across Melbourne's bayside and inner suburbs, the answer usually comes down to the condition of your home, the character of your street, and the life you want inside it. Here is how to think it through.
In short
So which one is right for you?
Lean towards an extension when your home is structurally sound, you are attached to its character or its location, and you want to add space without the cost and upheaval of starting over. A knockdown-rebuild earns its place when the existing structure is tired beyond sensible repair, or the floor plan can no longer be reworked. For the majority of homes in the bayside area, a thoughtfully designed extension gives you the modern living you are after while holding onto what made the home worth buying.
The two routes
Same destination, very different journeys
Both paths end with more space and a home that suits how you actually live. They just get you there differently - at their own pace, price and level of disruption. Weighing them up starts with an honest look at what you already own.
Extend your home
- Holds onto the character, position and story of your home
- You invest in the new space, not in replacing what already works
- Typically faster, with less mess and fewer moving parts
- Often lets you stay living in part of the house
- Less environmental waste
Knock down & rebuild
- A fresh home shaped entirely around today's needs
- Complete freedom over layout, orientation and flow
- The sensible answer when the existing structure is failing
- Requires demolition and moving out for the full build
- Less likely for unknown variations such as asbestos
At a glance
The two paths, side by side
A quick reference across the things that tend to tip the decision one way or the other.
| What to weigh | Extension | Knockdown-Rebuild |
|---|---|---|
| What you spend on | The new space alone - the rest of the home stays | An entire new dwelling, plus demolition the existing property |
| Time on site | Generally, the less time consuming option | Longer - demolition, new footings and a full build |
| Living during the build | Often possible to stay in part of the home | You move out for the entire duration of the build |
| Approvals | Can be more straightforward, depending on overlays and boundaries | Full planning and building approval every time |
| Your home's character | Original features and streetscape can be maintained | The existing home is gone for good |
| Environmental footprint | Keeps the existing structure in use | New build to today's energy standards, however, more waste from demolition |
| Best when | The foundation is good and you want more space and/or better flow | Repair no longer stacks up against a clean start |
What moves the number
The things that shape your budget
Whichever path you choose, a handful of realities do most of the work on the final figure. Knowing them early lets you compare the two options on fair footing rather than a hunch.
Scale and design
How much floor area you add or rebuild, and how ambitious the design is, sets the starting point for everything else.
Going up vs going out
A second storey brings structural work that a ground-floor addition often avoids, and that difference shows up in the quote.
Your block
Tight side access and sloping sites - common right across the bayside suburbs - make the build more involved.
Planning controls
Heritage and other overlays can add design work and lengthen approvals, and are worth understanding up front.
Fixtures and finishes
Joinery, tiling, glazing and the materials you land on move the total more than most people expect.
Demolition and elsewhere-to-live
A rebuild carries the cost of clearing the site and renting somewhere while it happens - costs an extension can minimise or possibly avoid.
A clear way through
How to settle the question
Guesswork is where budgets get away from people. This is the order we work through with the homeowners to help them decide if an extension is right for their property.
Look honestly at what you have
We assess the structure, stumps, roof and services so you know what is genuinely worth keeping and what is not.
Get clear on the life you want in it
Rooms, layout and how you actually live day to day. The brief should drive the decision, not the other way around.
Check what the planning controls allow
We confirm any Council restrictions and/or heritage overlays, since these can impact your options.
Put realistic numbers against both
Honest figures for an extension and a rebuild, side by side, so you are comparing like with like - not best case against worst.
Talk it through with our design team
Sit down with a member from our architecture and design team, free of charge, and pressure-test the decision before you commit.
Our honest take
For most Bayside homes, a considered extension wins
Across Brighton, Hampton, Sandringham and Melbourne's established inner South-East suburbs, so much of a home's value lives in the street character. A bespoke extension lets you add the space and comfort of a modern home without trading any of that away.
Our architecture and design team builds additions that read as though they were always part of the house. And where a rebuild really is the smarter move, we will say so plainly. The honest answer comes before the sale.
How we workCommon questions
Questions we hear most
What Bayside homeowners tend to ask when they are weighing an extension against a rebuild.
Is extending really cheaper than a rebuild?
Which one takes longer to build?
Will I need council approval to extend in Melbourne?
Can we keep living at home while it is built?
Which adds more to the value of my home?
My home is in a heritage overlay, what changes?
