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.


by Jenny Mcfarlane

March 20, 2018

Extra bedroom ideas to increase your home's value

Improve your home and increase its value with ideas from converting your loft to a garden guest room Image: Granit Architects The need for an extra…

Take a home tour of a courtyard style pool house and studio extension

A dilapidated Georgian villa and a collection of ramshackle outbuildings in Cheshire gave Ben and Jo Morley the chance to create a unique courtyard-style home.

On-screen inspired London terrace basement extension

Film executive Niels Swinkels and his wife Erica took inspiration from on-screen interiors to turn their London terrace into a bright, open home.

Case study: Multipurpose pavilion with outdoor kitchen

This multipurpose pavilion with outdoor kitchen has become the hub of this west London home.

Case study: Sustainable extension to a Victorian flat in London

The addition of a kitchen-diner turned this Victorian flat in London into a airy, modern living space.

Case study: Small home office extension

This small but perfectly formed office extension in London has an instant connection with the outdoors.

Kevin McCloud on how our homes give us the chance to reflect and have new experiences

Our editor-at-large ponders how our homes can give us a chance to reflect and have new experiences.

End-terrace house extension outwards and upwards

Two new feature staircases link the levels of Marie-Eve Poget and Richard Jones’ end-terrace house, which has been extended outwards and upwards with dramatic effect.

Wrap around basement extension

An enveloping basement extension in Oxford brings dramatic views from all angles.

Change of plan: a new, light-filled extension

How Clare and Gharad reworked the layout of their London home and added a light-filled extension that created a better flow and link to the...

How much does an extension cost?

Any build project can be a big financial investment, so it's essential you put a lot of thought into how much your extension will cost.

A step-by-step guide to planning a kitchen extension

Make relaxed, multifunctional living a reality with a sociable and spacious open-plan addition. Read our step-to-step guide on how to plan and build your house...

Shower room extension to a garden studio

Adding a tiny shower room extension to an existing garden studio has transformed it into a secluded and practical woodland retreat.

Building an extension on your existing property is a great way to add extra living space to your home as well as increase its value. Extending your home is a popular way of adding more space to your property, so you don’t have to incur the costs of moving house.

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There are considerations that need to be made before constructing an extension; the plans of your project need to be taken into account. Will it be single or double storey? Will it be a loft extension or built at the rear of your house? Does it have suitable road access? What is the surrounding land like? How is the soil condition of site? Financing the project is another important consideration. It is worth looking into using your home as a way to make money if you are worried about paying a potentially large sum of money on property building works.

The proposed project might need planning permission before it can go ahead as well as needing to meet building regulations. You will need to find out all of this essential information before starting any building. Finding an architect to help with design and building of your extension will normally ensure a much smoother project.

If your extension has been approved then you can start designing and building. Many people design their own build depending on the nature of their existing property, as well as their own living space requirements. This will determine whether you build up in to your loft, down into your basement, extend your kitchen out, or even build a garden room outside.