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Contemporary extension design ideas

So, you’ve decided to add an extension onto your property, presumably as you need the extra space. But without having a clear design in mind, it can be hard to know how to approach an architect. Here at KJ Architects, we’ve carried out a huge variety of work over the years, and our design team can help you whether you have a clear idea in mind, or just an indication of the space we have to play with.

Here are some contemporary extension designs to help get your creative juices flowing:

1.Transformation of a tired bungalow

Bungalows are one of the most common properties that require extensions. Many people like to extend into the roof space to add some additional bedrooms, giving them more living space. This particular extension was carried out on a 1920s bungalow, where the owner required wheelchair-friendly access and an upgraded design.

As you can see from the photo, the extension enabled the kitchen, dining and living room all to become open-plan and open onto the garden with a beautiful set of French windows. It’s a modern extension that has completely revamped the entire property.

2. New kitchen-garden room, maximising space and light

We recently carried out an extension on a property in Newmarket where the client wanted to not only replace their existing conservatory but also allow more light to flow into the kitchen. We improved the space within the conservatory by building the new wall further forward, which also meant the kitchen was enlarged, allowing for a greater flow of light and air.

The conservatory was completely replaced with a kitchen-garden room which was slightly larger, and new sliding doors were integrated to allow easy garden access. It isn’t just the external appearance you need to think about when building a contemporary extension though, you also need to think about roof finishing, doors and added extras such as underfloor heating

3. Using different shapes to enhance your layout

If you want to go for an innovative, modern look, consider the shape of your extension. Rather than opting for a bog-standard square or rectangular addition to your house, you could always mix things up with some jutting out walls. They are a great way to maximise space too. Curved glass creates a real statement, while this property utilises a dramatic roof to add extra height to the extension, without exceeding the height of the original property.

4. Cost-effective side return extension

If you’re on a limited budget, but desperately need to add space to your existing property, you may want to consider a single-storey side return extension. What’s even better, is you probably won’t require planning permission either, as current permitted development allows you to build up to a maximum of 4m high, and a width of less than half of the original house. It’s the perfect way to transform a dark, unused side passage into a slightly larger kitchen-dining area.

We hope that has given you some inspiration on your new extension design. Please feel free to browse our case studies where you can see some of our expert creations. The @Modern House has tweeted some fantastic ‘contemporary extension designs’ in the past too.



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96 Kensington High Street London W8 4SG
Studio 2 4 The Highlands Exning Newmarket Suffolk CB8 7NT
T: 01638 662393
Contemporary extension design ideas