Cost of conservatory vs extension

If you need more space in your home but don’t want to move, you have two main choices: add a conservatory or build an extension. Both options enable you to expand your living space without relocating, allowing you to create a property that suits you perfectly. But which option is kinder to your bank balance? We have decided to find out.

Planning permission

Extension: You’ll need to secure planning permission before getting started on any major extension and it’s important to factor the cost of acquiring planning permission into your budget. The exact cost of your application will depend on the size and scope of your project. If your application is denied, appealing the decision could be costly, putting a further dent in your build budget.

Conservatory: Most conservatories will come under the umbrella of ‘permitted development’. This means that, as long as your conservatory is within a certain size limit, you don’t need to secure planning permission before you start your build. As well as making your build cheaper, not having to seek and secure planning permission will allow you to complete your project a lot faster.

Build cost

Extension: According to @MyHomebuilding, “Depending where you are in the UK, the cost of a straightforward extension should allow for around £1,000–£2,000/m².” So if you’re planning a 30m2 extension, you’ll be looking at spending between £30,000 and £60,000. If you’re based in London, the cost of building your extension could be even higher.

Conservatory: While it’s possible to spend up to £40,000 on a large, luxurious conservatory, the average cost of a conservatory in the UK is closer to £15,000. If you’re on a budget, you can bring the cost of your conservatory in even lower by opting for a smaller build and more simple finish. This makes a conservatory an incredibly affordable option for homeowners who want to improve their property but not break the bank.

Running cost

Extension: The running costs for your extension should be roughly the same as those for the rest of your property. If your new extension is well-insulated and well-built, you may even find it’s cheaper to heat than other, older parts of your home. If you’ve opted for a large extension, it could well add a considerable amount to your monthly utility bills. Talk to your architect or project manager before beginning the build to find out more.

Conservatory: Modern conservatories are very affordable to run. Unlike the models you may have seen on older properties, today’s conservatories are made from solid materials and are designed to be as energy-efficient as possible. What is more, because you can often simply close the doors to a conservatory and cut it off from the rest of the house, you don’t have to heat the space when it’s not in use.

Find out more about adding a conservatory to your property, and find the design that is right for you, by exploring our site today.