Callender Howorth Interior & Architectural Design

We are in the final stages of revamping a recent purchase in Nice, France working with Mark and his team at Callender Howorth. It has been a delight to work with Mark and his associates. At each step of the way, Mark, Nathalie and Jade have been nothing less than professional, competent, and really a delight to collaborate with. They have found really lovely and unique pieces that make our place sparkle. The construction work that has been done so far (a bathroom refresh, painting and repairing plasterwork and walls, electricity, etc) all have been to the highest standards. We are looking forward to seeing the final completed project and to settle in to our new place. We would not hesitate to recommend Callender Howorth for your design needs.

Highly recommend Callender Howorth. They are the most professional interior designer we have ever worked with and we have worked with many! Great job guys, we are so happy with the results! Barry Green

We are delighted with the work that Callender Howorth did for our listed home in Hampstead. The project was quite large and technical and they did a spectacular job. Thank you to the team! Tip top! Chloe Davis

We have been working with Callender Howorth over the past 2 years on our villa new build project in the South of France, due to be completed October 2024. We mainly knocked down our old villa, keeping only the exterior walls. In this region, it’s not uncommon to have delays due to administration, permits etc. and we were no exception. However throughout this process the entire team at Callender Howorth provided us with solid support, professional service and flexibility Their high level of service, patience and responsiveness would have been difficult to find in another design firm. The entire team stayed on top of the project at all times, making frequent visits to the site and to other contractors for coordination of works. Their interior design and space planning from their London offices was excellent, thanks Michael!! And Howorth himself – with the keenest of eyes and greatest of talent was so much fun to work with. Him and his team worked tirelessly to create beautiful spaces throughout the villa, whilst always respecting our personal style. I would recommend Callender Howorth hands down to anyone. Additionally would hate to imagine what direction the project would have gone without their involvement.

We used Mark and his team for two full scale renovations and couldn’t be happier. We also recommended them to friends who were thrilled with the interior design of their house. Mark and his team, (in particular architect Michael Lawrence) did first rate work, designing spaces that were both beautiful but also perfectly functional and comfortable for our family. In both cases they created totally new layouts, optimizing space and views. They managed the construction process brilliantly, through meticulous planning and oversight of our builders, keeping the contractors to a tight schedule. Their interior design was very much in step with our wish list (they really listen to their clients) but a million times better. They literally reimagined empty, gutted spaces and transformed them into beautiful, airy, stylish and extremely functional homes, while being a lot of fun to work with. We recommend them with enthusiasm and gratitude. (Two projects done for us in 2017 and 2019 respectively. Friends’ house done in 2021).

I found Mark and the team at Callender Howarth to be an absolute delight. They navigated and worked with our relatively compact space with enthusiasm, creativity and great attention to detail. I would highly recommend.

I must congratulate the professionalism and quality of the work provided. I highly recommend.

I was thrilled with the design and execution of the renovation of my apartment in Monaco, Mark and his team are highly recommended! Many thanks Mark!

Very pleased with the results at our Villa in Vence. Callender Howorth done a fantastic job.

We just moved to the French Riviera after renovating and selling our home in Mayfair. Callender Howorth did such a spectacular job on the renovation and we sold our home for much more than we originally expected. We are now working with them for our new home in Villefranche-sur-Mer which is quite technical as it’s an old Provençal villa overlooking the bay. They are doing an amazing job since French building regulations can be tricky. We are so excited and absolutely love working with Mark and his team! Margaret Kelley

We have been working with Callender Howorth for years for our main home in London and recently for our vacation home in Malibu, California. Mark and his designers carefully listened to our preferences and helped us create a new vision and style of our home that we absolutely love! We highly recommend them as they are so professional, trustworthy and talented beyond measure. Excellent team !!! Paul K.

Callender Howorth ont réalisé un travail d'excellence dans ma maison à Cannes. Je recommande absolument.

Moving now into our wonderfully renovated home. Over the moon with the final result. It's been an absolute delight working with the team at Callander Howorth.

I was matched with Callender Howorth on Houzz and had a disappointing experience. The team was unprofessional and inattentive to basic details, which was surprising since this company markets itself as "high end." They consistently imposed their ideas without regard for my preferences, wasting an excessive amount of my time during calls by revisiting the same topics, asking redundant questions, and presenting poorly thought-out designs that were nowhere near aligned with my vision. It felt as if they weren't even listening or taking notes during our meetings. During these calls, in Mark's absence, his team cited their heavy workload with other Callender Howorth projects as an excuse for the issues encountered. Additionally, Mark failed to disclose that a lead designer had relocated to Australia, expecting me to accommodate her timezone. When I raised this issue, he responded dismissively, making me feel uncomfortable for even bringing it up. Hiring a British firm was important to me for a reason. Echoing the experience of another reviewer, I also encountered a frustrating lack of responsiveness and helpfulness from the team, with many of my queries going unanswered for days or weeks and receiving ideas from the team that lacked thoughtfulness. When I raised my concerns with Mark, he responded defensively, attacking me instead of addressing the issues at hand. It became abundantly clear that Mark does not handle feedback well. Consequently, I decided to terminate my engagement with Callender Howarth. Afterward, Mark initially refused to refund the pre-paid funds for design work, leading to a prolonged and uncomfortable resolution process. This confirmed that my decision to end the engagement was right. While I anticipate a critical response to my review, similar to what was left for the reviewer "JB" below, I want to emphasize that I intentionally waited over a year to write this review to ensure objectivity and remove any emotional bias. I am simply sharing my experience for others to consider when selecting a designer.

I was introduced to Callender Howorth by a friend in South of France to do my villa. I wanted a creative company but also have everything completely managed for the villa. Mark Howorth and his team have done a fantastic job. They are really good at what they do. their build team were excellent which is rare in the South of France! Very Happy.

Callender Howorth have just completed a major refurbishment of our penthouse in Paris – we are really delighted with the results and would highly recommend them to everyone!

Mark and his team at Callender Howorth did a phenomenal renovation on our bastide in the French Riviera. My wife and I are so delighted and they far exceeded our expectations. Highly recommend!!

thank you to your amazing work Callender Howorth- it has been a real pleasure to work on our house with you over the last year!

Callender Howorth Interior & Architectural Design did a fabulous interior design for my home on the Cote d'Azur. Everything was thought out down to the smallest details. My home is now cozy and beautiful thanks to Mark and his team. They are the best!

Callender Howorth went above and beyond to make our space unique and inviting. They took great care of us and made the whole experience fun and easy.

Mark has a great eye and was patient with all requests. Highly recommend Callender Howorth for big renovations!

Very pleased with the work from Callender Howorth - really beautiful!

I really recommend Callender Howarth for your home – we have just finished a major design and renovation of our house in West Hampstead and it was a real pleasure from start to finish. Mark was incredibly professional and provided expert advice throughout. We will certainly be using Callender Howarth for our other homes in the future!

Callender Howorth has just completed a major refurbishment of our house in Hampstead. We are so pleased with the results. They really listen to our ideas and made our house feel like us and look amazingly stylish. They also project managed the complete build. Look nowhere else! Use Callender Howorth.

Mark's transformation of my home was absolutely astounding beyond what I had imagined! I feel like my home really represents my spirit and lifestyle! I love how he included wellness into the design giving my space a zen yet stylish feel. Thank you Mark and your amazing team at Callender Howorth!

“Thank you for styling our home and bringing us up date. What a transformation. Thank you all so, so much for everything.”

10/10 CH team!! We love you. Thank you for our new house.

Just want to say a huge thank you to the team at Callender Howorth for transforming our home in Kensington. We love it!

What a difference you have made to our house and life! It's been an absolute joy to work with you all. Thank you so much for everything!

“ Want to thank the Callender Howorth team for all of their design advice on my house in Notting Hill. An amazing transformation!”

Our new home in Cobham is now finished and we are very happy indeed. Thank you to everyone at Callender Howorth for everything you have done.

We are over the moon with our finished penthouse in Knightsbridge. Callender Howorth’s styling team have found us some beautiful furniture and art. The completed look is so stylish. Highly recommended!

We bought our listed house in Hampstead just over 2 years ago. We chose Callender Howorth as they have much experience with the design and renovation of listed buildings. We are now moved in after extensive works to the house. We are simply over the moon with the results and just so pleased with all that Callender Howorth have done for us.

From start to finish we enjoyed having Callender Howorth work on our project. We were not sure what we wanted and Callender Howorth's team was very quick at catching up what we liked and what he could do. We purchased our townhouse because of the stunning location above Nice in the south of France. We thought there might be something interesting to do but couldn't have imagined the result. We love our new home. It's very modern yet it still has it's style with an original rocks wall in the main room, and kept the fireplace in the bedroom upstairs.

Mark and his team were really great throughout the process of our refurb. They tailored the design closely to our requests and filled in the gaps when we were open-minded. We're really pleased with the result. Our living room is a place that the whole family loves to spend time in.

What a fantastic experience we had in doing up our home in Sevenoaks. Mark and the team brought some really great ideas to the table - the end result is a wonderful space I and the family love to live in.

Callender Howorth were a pleasure to work with, thank you for all your assistance and professional approach when it came to collaborating on a blog!

I have been referred to Callender Howorth by a friend, who was really happy with their work. They've done such a great job in my Chelsea apartment, they have transformed it with their stylish touch into a chic and pleasant place. They've made such efficient use of space that my apartment feels so much bigger than before. The team was very professional and responsive. I would hire them again, in a heartbeat.

A friend introduced me to Mark at Callender Howorth after he had his London apartment redesigned. I wanted my space renovated into something more modern and in-style. I kept an open-mind while requesting a relatively minimalist design. I am really happy with the outcome, the CH team are amazing. They listened to my requests, stayed within budget and delivered on time. All I want to do now is stay home and enjoy the amazing ambience they created - all thanks to Mark and his team.

I chose Callender Howorth to renovate my penthouse in Chelsea. I wasn't entirely sure of the style I wanted to go for but Mark and the team brought my space to life and exceeded my expectations; I was so pleased with the finished product! They were so helpful throughout the project, and took care of every minute detail. I'd definitely use their expert services again if I am to renovate another property.

Our new basement conversion has completely changed the way we use our house. Thanks to the team at Callender Howorth who managed to create a really bright and spacious design that does not feel like you are in a basement –genius.

The team at Callender Howorth provided an exceptional service when I contacted them to redecorate my London townhouse. They delivered the project on time, they listened to what I wanted and they stayed well within my budget. Everyone on the team has an eye for what works. The textures, colours, and patterns they chose look fabulous. I especially love my new open-plan kitchen/ living room, which has totally opened up and created more space on the ground floor. Thank you so much to Mark Howorth and the rest of the team for my amazing home.

We used Callender Howorth to design and oversee the gut renovation of our apartment in Nice. Mark Howorth was recommended by a local realtor who had seen one of Mark's completed projects in Nice. We are convinced that the decision to hire Callender Howorth was the single greatest factor in the success of our project. Mark and his team transformed a dark, boxy and very dated space into a spacious, light, highly functional and sophisticated home, which showcases the glorious sea view and contained just the right amount of "wow." Mark brought to the project an uncanny ability to optimize space and functionality. His design opened the sea view to all major areas of the apartment and made the space look and feel much larger by removing walls, re-apportioning rooms and creating a series of unified spaces that flowed seamlessly with plenty of storage. Mark and the team had great style-their use of high quality materials and selection of furniture, colors and textures created an elegant, sophisticated space that was also comfortable casual and bright. Mark's sense of color and texture was that of a true artist. He highlighted the sea view by setting it off with light, natural and neutral colors and textures but accentuated the blue through strategically placed rugs, cases and a dramatic evocative blue accent wall that is loved by everyone who comes into the home. Mark also used dramatic and sophisticated lighting design, to create different moods. Callender Howorth not only provided exceptional design work but also provided excellent project management. Although we had renovated homes before, we were never able to be truly "hands off" as the designers, architects and contractors required close supervision to ensure we got what we wanted in the time and budget agreed. This was not our experience with Callender Howorth. They were organized, reliable, on top of everything, anticipated issues, and delivered on what they promised and managed professionally the contractor and subcontractors for the job. They brought in a first rate English speaking/run construction firm with deep experience in Nice. Between Callender Howorth and our Contractor, we felt like we had the "A team" whom we could trust completely to get the job done on time, on budget and as specified. Because of the distance for the the US, we used Callender Howorth to source all furniture and fittings and housewares. This was a God sent, as we were able to get off the plane and walk into a fully rennovated and equipped apartment just five months from design inception. We will never forget the feeling of walking into the sunning finished space for the first time. The work of Mark and Callender Howorth went way beyond our dreams and expectations. We can not recommend them highly enough.

Just want to thank all of the incredible team at Callender Howorth that have made our dream home in Kensington come true. We are really delighted.

Callender Howorth designed both my house in Windsor and more recently a holiday villa for us in Greece. We really enjoy the process of working with Callender Howorth because they ³got us² understanding our requirements, needs and aspirations. They really impressed at how well they handled and project managed the project in Greece, making it a more relaxing journey for us too. We now have two amazing houses in two beautiful locations I would highly recommend Callender Howorth.

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.

I bought a house in Marylebone that had lots of what I wanted but needed some creative thinking. I worked with Mark Howorth and his team at Callender Howorth for over a year on the designs and build. Am delighted with the end result. Mark interpreted my taste and style perfectly - he knew I wanted a contemporary home that could be used for both entertaining and relaxing. On his suggestion we removed a number of internal walls and added floor to ceiling glass windows facing into the courtyard - which really helped open up the space and make it light and bright. I love the kitchen which works for our lifestyle. I didn’t think that I would use this space as much as I do – the flow from kitchen into the courtyard or into the open dining area is great in summer especially. Where I think Mark really made the difference was with the personal touches - personalized art in particular which I wouldn't have found with mark and the team. in total - was weighing up whether or not to use a designer or wing it myself - total no brainer in retrospect - enjoyed the experience and so glad I used CH.

Callender Howorth provided us with a full design and project management service for an extension and full refurb of our maisonette. They liaised with planners, architects, building contractors, kitchen companies and advised on sourcing of materials and interior furnishings. The project took 1 year from conception to completion. The people at CH were creative, professional and importantly a pleasure to work with. I would and have recommended them successfully to friends.