About us

Extend is a design-and-build company based in Fulham, South-West London, specialising in loft conversions, kitchen extensions and basements as well as high-end full home refurbishments. 

Offering a complete ’end-to-end' service, all projects are personally overseen by Managing Director and qualified engineer James Quinn. James has been working in the construction industry since 2002, supervising over 1000 domestic projects. 

At Extend, we pride ourselves on the consistent delivery of great quality developments, on time and on budget. 

We regularly attend to the initial planning, structural calculations and building control submission for clients’ expansions and renovations. On a number of projects, we also work as the main contractor in association with top architects and interior designers experienced in luxury home transformations. 

All contracts are are made directly with the client (no sub-contracting) and we guarantee our works for a period of 10 years. 


Loft Conversions

Extend can transform your existing dusty loft space into a new bedroom, playroom or other spaces such as a home office. We complete a range of loft conversions including dormers, mansards, pod rooms and hip-to-gable loft conversions. Many lofts (not in a conservation area) can be completed under permitted development. We can visit your property and can offer a free consultation on your planning requirements. Contact us to book an appointment.


kitchen extensions

Extend can build a ground floor extension to create a larger kitchen/dining space or to increase the square footage of the property and re-design the layout. Many of our clients say their kitchen extensions creates a new "hub" for the family with generally an open-plan layout. Planning permission is required for many side-return kitchen extensions but the majority of local authorities approve these under certain conditions. Some types of extensions can be completed under permitted development or the neighbourhood consultation scheme. We can visit your property and can offer a free consultation on your planning requirements. Contact us to book an appointment.

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Kitchen Extension in Fulham, London.jpg

basement conversions

Extend can create a retro-fit basement under your existing property. Basements are a large engineering project and your project would be overseen by an engineer for the duration of the project. All basement conversions require planning permission. Extend are experienced in dealing with the many requirements that the local authorities require to grant permission. We can also advise on the Party Wall requirements of a basement and also ensure that we are considerate contractors during the build phase. A basement is a great way in adding a large amount of square footage to your property without dramatically changing the visual appearance. A wide range of rooms can be installed from cinema rooms to the humble utility room!



Extend offer a full range of services in refurbishing your home. We pride ourselves in delivering a high level of finish. We appreciate that we need to work within your budget but we do not compromise on quality. We offer a complete end-to-end service and can complete all aspects of your works without the need for you to engage several contractors and to avoid the normal builder/client pitfalls. We want the end product to be a well designed home that is practical and great value for money. If you do end up wanting to add a feature or a "wow-factor" we will be happy to oblige!