Home Extensions, Loft Conversions & Refurbishments by Jeffery and Wilkes

We specialise in the design and build of loft conversions, home extensions and home refurbishments.

With over 45 years of experience and a love of our craft we are passionate about ensuring we create your dream home.

Every job we undertake is completed to the highest standard as you would expect from a company with such vast experience.

So, whether you're looking for a home extension for greater living space or you're converting your loft into an office, you can be sure that you are working with the industry leaders.

Our passion is creating inspired spaces for you to enjoy with your family, friends, and colleagues.

View our work

Speak to one of our team about how we can design and build your space.

// Spaces to grow

House Extensions in London

Create living spaces that are in harmony with your lifestyle. Extensions provide the scope to reconfigure your home and positively change the way you live.


// Spaces to live

Home Refurbishments

A shiny new kitchen or bathroom, a colour scheme makeover, or a better use of natural light can all dramatically transform your living or work space.


// space for communities

Commercial Building Contracts

We care about our clients and the communities we work in. Our goals are to enhance the architectural landscape and create happy and safe environments with minimal disruption to the public.


About Jeffery and Wilkes

You’ll notice straightaway that we’re a passionate bunch. Understanding and prioritising your needs is at the heart of everything we do, and we talk about little else!

We listen. We collaborate. And we create inspired solutions that provide exceptional spaces to live, work and play in – helping you enjoy life to the full.

We also guarantee a wealth of experience and have built an unparalleled reputation for reliability and trusted design & build solutions throughout London.


London is best

We love our base in the bustling and thriving borough of Kensington, London, and its surrounding communities.

We know the local Edwardian and Victorian style properties inside out, and have the experience to maximise their full design potential.



Our full end-to-end, project-managed design and build services are executed by highly experienced experts. This ensures that you benefit from exceptional time management, craftsmanship and value.

Whether your wish is to extend your home, convert that loft, refurbish the house, or transform a property or commercial development – we would love to hear from you!