Should you Extend Up or Out?

Deciding whether to extend up or out can be a difficult task. Where do you need the space the most, and what will add the most value to your home?

We’ll take you through the things you need to consider when you’re deciding on a loft conversion or an extension.

Questions to ask yourself when you’re thinking of extending

To help you decide whether you should extend up or out, there are some other things you should consider:

  • What will I use the extra space for?
  • How will the space fit with the rest of the house?
  • How will the project fit with my long-term plans?
  • How can I get the most daylight in the new space?
  • How much will it cost, and is it cost-effective?

If you answer these questions to yourself honestly, the answer to whether you should have an extension or a loft conversion should be pretty straightforward.

Loft conversions

Most of the time, loft conversions are cheaper than extensions because the builders won’t have to dig foundations and the structure is already there to work with. But there are other issues you need to think about to see whether a loft conversion will add value to your home:

  • Headroom: You don’t want to have to crouch every time you’re in the room!
  • Staircase position
  • Balance of space: Some say that loft conversions unbalance a house because the loft usually becomes a bedroom
  • Trusses: Will you need new attic trusses or can builders work with what they’ve got?


Extensions usually give you more living space, which is why a lot of homeowners decide to opt for them. To ensure that you don’t decrease the value of your home, you should consider a few things:

  • Your garden: You can’t develop more than 50% of your garden, but this might still be too large. Consider how much of your garden you’re willing to lose.
  • Size of extension: You could have a full width, three-quarter width extension or a 2-storey extension.

So should you extend up or out?

To make your final decision, you’ll want to think about how much daylight the new space will get. Another thing to remember is that the new addition will need natural ventilation to avoid damp and mould. You’ll also need to consider whether the extension or loft conversion is a project to accommodate your current needs or whether it fits into a long-term plan.

To ensure that your property increases in value, you should make sure that your loft conversion or extension becomes a vital part of the home instead of always seeming like an add-on.

Made your mind up? Looking into a loft conversion? Or perhaps you want to compare quotes for a loft conversion and extension? Fill in our form below to get up to 4 quotes from local companies.

Emily Rivers

Emily Rivers is the Customer Experience Manager at Quotatis. She informs customers of the latest developments in a range of products so they can make the best choice for their homes and ensures they get the best out of our service.