House Extensions London | Jeffery and Wilkes

// Spaces to grow

House Extensions London

Our contemporary lifestyles need living spaces that are flexible and practical, but also creative and inspiring. 
An extension provides the space to grow…


Why Have A Home Extension?

Even with concerns over the dropping price of properties in the London market, property prices are still comparatively high so London is still the ideal place to own a home. Rather than finding a new home within London many people are choosing to extend their house instead.

If the living space in your London house is cramped and cluttered, or you’ve fallen out of love with your home, an extension can transform the way you live.

Do you crave light and airy, open-plan living spaces? Adding a conservatory or extra glass is the way forward to brighten up the home. Imagine a side-return extension with new windows, bifold doors and roof lanterns

Can you picture yourself entertaining in a spacious ‘wow-factor’ kitchen-diner home extension? How about a seamless integration of outside spaces and internal living areas? Or would a cosy den for watching movies, a playroom, or a studio for work or creative passions complete your dream house?

Our specialist team, based in Kensington, London, will work with you to implement your ideas and create your dream lifestyle house through our complete design and build service.

From day one to completion, Jeffery and Wilkes make it our mission to remove the stress of a home extension project. We achieve this by fully managing the entire process, from creating your unique design plans by our in-house architects and gaining full council approval, to applying those finishing touches to your new house extension in London.

Space is a precious commodity in London and a home extension is one of the best ways to make the best use of that precious space.

Perhaps you live in London and would like more space in your house? Let’s explore what home extension options are available for your house in London.

  • We take care of every stage - from initial design to completion
  • We cater for your individual requirements – from small single-storey to large double extensions
  • We offer complete peace of mind, with full insurance and a unique lifetime guarantee on all our builds.

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our process

An extension will give you the chance to modernise your home. More space will allow you to change the layout and create better living areas. Our Specialist House Extensions Team Operate In Ealing And West London.

What makes Jeffery and Wilkes different from other design and build firms?

Jeffery and Wilkes Are Experts in Designing and Building Home Extensions

With nearly half a century of experience of building extensions in London, and helping our customers come up with unique design ideas, we will ensure, right from the initial consultation to completion, that your project runs smoothly. Our dedicated team in London have extensive reviews and testimonials from previous clients who are delighted with their extensions - all designed and built by us.

Our London team will assign you a project manager who will take care of your project and make the process simple. Our project managers come with a wealth of experience and have overseen hundreds of extensions. They will ensure you are fully updated with where your project is at; ensure we are providing you with the best service; ensure health and safety is adhered to on site. We will listen to your ideas are listened to, whatever your preferred style, whether it be contemporary, modern etc. This is why we are an award-winning company, and a leading design and build firm in London, specialising in extensions. We have full insurance and public liability cover. Find inspiration for your London house extension here in our portfolio where you will find pictures of extensions that we have completed for previous customers in London.

Types of Home Extensions

Rear Extensions

Below are some of the rear extension options that you may be able to have if you are living in a detached, semi-detached, terrace property that has NOT already been extended.

Extending Further

In the early 1900s in London, many houses were built with, or closely followed by, a rear addition.
Your London property may already have this; can you extend further? In many cases, yes you can; the planning department often regard this as part of the original house.
See below for some examples of extensions you can add to these types of properties.


House extensions in London are more popular than ever; whether it be side-return extensions, single-storey extensions or double-storey extensions, conservatory extensions or glass extensions, rear or wrap around. If you own a property in London, adding one of these extensions to your house could vastly increase the value and, of course, enhance your lifestyle especially if you have a growing family. Based in the heart of London, in Kensington, Jeffery and Wilkes, the experts in home extensions will design and build your project for you with our experienced team.

If you have looked through the extensions we have suggested above and feel that none of these are suitable for your London property, still get in touch with our team. There could be other types of extensions suitable for your property, for example a loft conversion, garage conversion or basement conversion. Call our friendly team based in Kensington, London, today on 020 88193883 to discuss your project or email

A selection of our latest House Extensions London projects


Jeffery and Wilkes is an accredited design and build company encompassing a full design to completion service, inspiring and supporting clients to create exciting spaces and safe environments to live, work and play.


micro-giving impacts created

Our greatest wish is to make a tangible, positive difference - not only with the environments we create for our clients, but also for the wider community.

To this end, we’ve partnered with B1G1 Business For Good. For every build we complete, we make a donation to a community project – transforming the lives of our clients and the lives of various communities that need our help.