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Use our free extension cost calculator to find out how much your build will cost – get your answer in just a few minutes

By Jason Orme Last updated

Use our free extension cost calculator to find out how much your extension will cost to build

Extension
A digger digging a trench for drainage with a red brick house in the background and pipes in the foreground
Why your extension's drainage needs planning before a build — and the problems that could happen if you get it wrong

By Mark Stevenson Published

The low-down on how to get your extension's drainage right to avoid any expensive and time-consuming mistakes

Extension
A white rendered kitchen extension with a large glass door that opens out on to a patio
'This is the secret to ensuring your kitchen extension timeline stays on track, and you avoid lengthy delays,' says self build expert

By Mark Stevenson Published

When planning a kitchen extension, it's important to correctly assess how long the project might take, not only for practical reasons but also for budgeting

Extension
A stone cottage with glass box extension to extend the ground floor as well as link the cottage areas more effectively
I discovered my home’s extension potential in seconds – here's how you can too

By Megan Milstead Published

In less than a minute, find out whether your home can be extended – plus get insights on costs and planning risks

Extension
single storey rear extension on semi-detached brick house with patio and outdoor seating area
How much does an extension cost in 2026? Here I break down all the factors involved, so you can work out exactly where your budget is needed

By Michael Holmes Last updated

From single storey to double storey, size to spec, your extension costs will differ depending on a number of variables. Here's how much you can expect to spend

Extension
10 small orangery kitchen extension ideas for even the most compact culinary spaces – uplifting, bright and a joy to spend time in

By Natasha Brinsmead Published

Thought you needed a sprawling space for a small kitchen orangery extension? Think again – these examples are proof that some of the best things really do come in compact packages

Kitchen Extension
builder showing male and female plans in extension being built
Can you build an extension from SIPs? Yes says build expert, but you need to weigh up if it's right for your project

By Mark Stevenson Published

Using SIPs to build an extension is not without its benefits. But is it the right material for you? Mark Stevenson explains what to consider before you choose

Extension
Why your home extension could cost more under proposed architect rule

By Joseph Mullane Published

Labour is considering plans that would make hiring a qualified architect mandatory for home extensions – a move critics warn could increase costs and bureaucracy for homeowners

Extension
blue brick L-shaped extension with sliding doors
Want a spacious, bright new kitchen that feels connected to your garden? An L-shaped kitchen extension is exactly what you need

By Natasha Brinsmead Published

If you want to add maximum space with your extension without eating into valuable garden space, an L-shaped design could be the answer

Kitchen Extension
Wasted space be gone – 10 ingenious side return kitchen extensions to turn an awkward passageway into the heart of the home

By Natasha Brinsmead Published

Check out our inspirational collection of kitchen side return extensions – the perfect way to make use of an otherwise dark, neglected space

Kitchen Extension
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