Callender Howorth is one of the United Kingdom’s leading luxury interior design firms and is renowned for its stunning portfolio of inspiring and timeless residential designers. Discover more about this in this article.
Heath Drive Hampstead
Callender Howorth has offices in London, the French Riviera and New York, with its multi-disciplinary team of award-winning architects and designers becoming a beacon in the current luxury interior universe.
Belsize Lane
With 25 years of pure design experience, unshakable passion and unique commitment to excellence have led Callender Howorth to deliver exceptional design and restoration of listed London townhomes to contemporary penthouses in Manhattan.
Country House
Callender Howorth’s clients experience an enjoyable personalized approach based on an empathetic understanding of their desires and lifestyles. Superior client relations are at the heart of every project focusing on a service-led manner.
Mayfair Mews House
Callender Howorth was founded in 1997 and is led by Mark Howorth, who continues to create and transform uniquely tailored homes with an epic design that embraces the best of the art of composition.
Swiss Chalet

Essex Mansion
Callender Howorth offers tailored architectural interior design, build, renovation and project management services to both residential and commercial properties throughout the United Kingdom, Europe and North America.
The Boltons
Their dedicated team of award-winning designers interior architects, stylists and project managers deliver innovative and bespoke solutions to each of Callender Howorth‘s clients.
Belize Park House
Regents Park House
At Callender Howorth, they design for residential and commercial sectors, creating exceptional apartments, houses and offices worldwide. Their design services are diverse and include interior architecture, interior design, furniture and lighting design.
City Penthouse
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