Building a Second Storey Extension

Outgrown your single-story? It may be time to build up.

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Adding a second storey to a house

Besides adding a whole new floor of space, double-storey extensions will significantly boost the kerb appeal and value of your property, making it a great investment for the future. Adding a second storey to your house also offers the following advantages:

  • Great views from the upper level, ideal for bedrooms or recreational space
  • Leaves your garden or backyard untouched
  • In some cases it can avoid foundation or excavation work


What to consider before building

1. Local Building Regulations

The first thing you need to do before beginning construction work is to check with your local council about specific regulations for adding another level to your house. These may include height or design restrictions.

2. Your Foundation

Equally important is checking whether your existing foundations are capable of supporting the weight of another level. Not all single-storey properties can hold up another floor.

3. Construction Time

Depending on the new floor design and how elaborate the renovation will be, your second storey extension could take anywhere from a few months to a year or more to complete. It’s best to agree on the timeline with our construction team beforehand so you have realistic expectations.

4. Alternative Living Arrangements

Bear in mind that you might have to find temporary living quarters if the renovation gets too extensive or disruptive. Again, this should be discussed with our team before they commence construction so you can plan ahead accordingly.

How Much Does a Second Storey Extension Cost in Australia?

The cost of an upstairs extension depends on its size, style,  design,  access  and the materials used, and the overall condition of your home. The average cost of a two storey extension in Melbourne ranges between $340,000 and $640,000.

Second Storey VS Knock-Down Rebuild

Opting for a knock-down rebuild lets you start fresh with a custom-designed house, but it may be more expensive and you'll lose the old property's character and history.

Conversely, adding a second storey preserves the unique charm of an older home, but structural limitations apply. Your choice depends on how much change you want and local building regulations, which could restrict demolition or additional levels.


Is It Worth Adding a Second Storey?

If you’re on the fence about adding a 2nd storey to your house, here are a few compelling reasons to do it:

  • Significantly increases your floor space
  • Avoids disrupting your garden or backyard area
  • Adds dimension and grandeur to your house
  • Increases natural insulation to your lower level

Build Out OR Build Up?

House owners often face a dilemma when considering an extension: build out (expand current floor space) or build up (add another floor)?

Each option has pros and cons, with ground floor extensions potentially incurring costly excavation, disposal, and foundation work.

For a cost comparison, schedule a free consultation with Better Building & Construction for an obligation-free assessment of your home extension options!


Do You Need Planning Permission for a Second Storey Extension?

This depends on the renovation design and local building regulations, but you can trust our experienced team to liaise with the local council to ensure compliance with the council and government building requirements.

How to Get Started on Your 2nd Storey Extension

At Better Building & Construction, we understand that adding a second storey to your house is a massive commitment not just financially but in time as well, therefore, we aim to keep the process as simple and hassle-free as possible.

1. Consultation

Thanks to our extensive experience in second storey additions, we’ll be able to navigate you through the best options to suit your needs and expectations for your house extension.

2. Estimates

For a reliable cost estimate of your renovation, one of our experienced estimators can evaluate your requirements and deliver a comprehensive proposal.

3. Construction

We’ll keep you updated throughout the whole construction process so you have complete visibility of how your second storey extension is progressing at all times.

4. Handover

Now you can put your feet up and enjoy your brand new second floor! If you have any issues with your second storey extension, our dedicated customer support team is always available to provide complimentary assistance.
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Transform your dream home into reality with the team at Better Building & Construction. With 20+ years of expertise in Melbourne, specialising in second storey extensions and home renovations, we deliver impeccable service and top-notch workmanship.