basement conversion and construction london


Basement Conversion and Construction – London Experts

At Callender Howorth, we have a long-term expertise in converting and constructing basements in London. From wine cellars to libraries, en suite bedrooms to living rooms, the possibilities for creating your own dream underground space are endless.

With our innovative design ideas, excellent project management skills and premium network of suppliers, we commit to constructing your new basement to meet your personal requirements and specification. Our team is incredibly passionate about interior design and we have a great understanding and communication with our clients.

With 20 years of experience, we can offer you a high-quality service and a commitment to deliver your project on time and within budget. We pride ourselves on offering innovative designs together with well-organised project and financial planning.

Basement Conversion in Chelsea and Kensington

Kensington and Chelsea boroughs have recently introduced restrictions on basement extensions and require professional team of basement architects to get a planning permission.

Callender Howorth has been transforming basements in Chelsea and Kensington areas for many years so you can trust us to successfully manage the entire process from start to finish.

If you are interested in converting or renovating your basement in London, we would be delighted to hear from you. Call us on +44 (0) 20 7336 8560 for more information.

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Why work with us

Over 20 years’ experience designing award winning UK homes

Unique and personal approach to interior design ensuring that our clients homes reflect their personalities

In-house Stylists that source the latest and most exciting products globally

Leaders in smart home technology and the latest “must have” audio visual elements for the home

Dedicated Project Managers that ensure all projects are to budget and on time

A fun team that loves what we do!

From clients

Just want to say a big thank you to everyone at Callender Howorth. We love our new home and you made the whole renovation go so smoothly and finished dot on time for the birth of my daughter! Especially thanks for the quirky design ideas that really have made our new home so special.

Our villa in the hills of Nice is perfect!!! Thank you all at Callender Howorth. We loved working with you so much and will miss the “rose fuelled” design meetings! Merci Beaucoup