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Second Storey Or Ground Floor Extension – Which Is Right For You?

You desperately need more space and you’ve got three choices: you can move, extend your ground floor or build a second storey.

You love your neighbourhood and don’t want the stress of searching for a new home, moving and adjusting to a new area. Maybe you don’t want to shift the kids away from their school or their friends.

That leaves you with two choices: do you extend outwards or go up a storey? It’s a tough choice, but with over 40 years in the industry, Supa Group has the expertise and experience to help you understand the pros and cons of both options.

Here’s what you need to think about:

Extending your ground floor


  • This is usually the most cost-effective option, and ideal if your budget is limited but space isn’t.
  • The builders won’t have to make any serious structural changes to your existing home other than where the ground floor extension has to tie in with the existing structure.
  • You won’t have to move out during renovations.



  • You will lose space from your outdoor area.
  • In terms of overall value and space utilisation, the ground floor option may not stack up as well as an upper storey extension.


Building a second storey


  • It’s a great way to extend without losing any of your garden areas. This is a good option if you’re short on space.
  • You can increase the presence of natural light with more windows.
  • It enables you to make the most of a great view, which will increase the value of your home.



  • The need for stairs or a lift will cut into your ground floor space. Be prepared to sacrifice some space out of your existing structure in order to create a lot more space overall.
  • Because of the extra weight on your foundations and engineering assessment has to be made. Newer homes on waffle slabs may not be able to support an upper storey extension.
  • If you’re building in winter it can get pretty brisk during the period until the upper storey gets to lock up the stage.


A major consideration is the council planning scheme which will set out what restrictions exist such as planning overlays and setbacks. You also need to consider the condition of the existing home and its existing foundations. Another common approach is an extension that combines both a ground floor with an upper storey extension over the ground floor.

Once you’ve considered these pros and cons, you’ll be better positioned to make the right decision. Our design consultants have a wealth of experience to guide you in the right direction to help you make the right decision. Whichever option you go with, choose Supa Group Construction to build the perfect single storey renovation or second storey extension for your home. Contact us today!