Good to Know

House Extensions

Discover easy ways to create more living space and add value to your property with an extension. Whether you extend your home upwards, outwards or into your garden, find out from Grand Designs how you can transform your home and take advantage of the latest permitted property development rights.

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An expert guide to costing, planning and designing a two storey extension

Double storey extensions give you double the space of a one-storey extension but you’ll spend less per square metre. Get yours right, and it might make better financial sense than moving to a bigger house. Here’s how.

double storey extension
(Image credit: Joakim Boren/Mulroy Architects)