Thinking about adding more space to your home but not sure whether to ‘build up’ or start fresh? It’s a big decision, and there’s no one-size-fits-all answer. As a builder, I get this question all the time: Should I add a second storey or knock down and rebuild?
Both options have their pros and cons, and the right choice depends on your home, budget, and long-term plans.
Why a Second-Storey Extension Might Be the Way to Go
If you love your current location but need more room, a second-storey extension could be the perfect solution. This option lets you expand your living space without losing your backyard or dealing with the hassle of moving.
What Makes a Second-Storey Extension a Great Choice?
- Stay in the Neighbourhood You Love: If you’re attached to your area, schools, or community, adding a second storey lets you keep all that while gaining more space.
- Potentially More Cost-Effective: A second-storey addition can often be more affordable than rebuilding, since you’re keeping your home’s existing structure.
- Less Disruption: In many cases, you can still live in your home while the work is being done.
- Faster Build Time: Compared to a full rebuild, adding a second storey is usually quicker, meaning less time dealing with construction.
When a Full Rebuild Might Be the Better Option
There are times when starting from scratch just makes more sense. If your house is old, has structural issues, or needs major upgrades beyond just extra space, rebuilding might be the way to go.
Signs That Rebuilding Might Be the Smarter Move
- Your Home Has Structural or Foundation Issues: If your existing home needs serious repairs, it might be more cost-effective to rebuild rather than patch things up.
- You Want a Fully Custom Home: A rebuild gives you a blank slate to design exactly what you want, without having to work around existing structures.
- Local Regulations Favour a Rebuild: Some areas have height restrictions or zoning rules that make adding a second storey tricky.
- The Costs Are Too Close to Call: If the cost of a renovation is approaching that of a new build, you might be better off starting fresh with a modern, energy-efficient home.
What About the Costs?
Budget is often the deciding factor. Here’s a general idea of what you can expect to spend:
- Second-Storey Extensions: Anywhere from $2,500 to $4,000 per square metre, depending on materials, structural requirements, and finishes.
- Full Rebuilds: Generally start at $400,000 and can go well over $600,000+, especially if you’re going for high-end finishes.
Of course, these numbers can vary, and it’s always best to get a detailed quote based on your specific home and needs.
Making the Right Call for Your Home
So, how do you decide? Here’s my advice:
- Talk to a builder who can assess your home’s structure and give you a clear idea of what’s possible.
- Think about your long-term goals. If you plan to stay for decades, a rebuild might make sense. If you just need extra space for the next 10–15 years, an extension could be the better choice.
- Factor in approvals and zoning laws. Every area has different rules, so make sure your plans align with local regulations.
- Consider how much disruption you can handle. A second-storey extension might let you stay put, while a rebuild means moving out temporarily.
At the end of the day, both options can add significant value to your home — you just need to choose the path that works best for your lifestyle, budget, and future plans.
With all of this and more to consider, it’s essential to do your research to ensure you’re making an informed, smart choice for your home.
