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Premium Architecture for Hotels, Resorts, & Lifestyle Senior Living

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Our Expertise

Design That Balances Vision
and Performance

View Our Work

Sin&Co. is a boutique architecture studio shaping transformative environments for the hospitality and senior living sectors. With studios in London and Auckland, and strategic partnerships in Spain, we offer deeply considered design with global reach and local understanding. 

Architectural Design

Our architectural work spans hospitality and senior living, delivering creative, commercially driven designs from early concept to project completion.

Consultancy

We provide specialist advice and project oversight, helping clients define strategies, maintain quality, and achieve their goals with confidence.

Portfolio

Selected Projects

We partner with developers, operators, and hospitality brands to create environments that combine design excellence with lasting quality. Each project reflects our commitment to creativity, functionality, and enduring value. 

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The Beaumont Hotel

Art Deco Car Garage reimagined as a Hotel.
Hospitality
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Architects: ReardonSmith | Photo credit: Anthony Weller

Gracedale

Human-centred design that restores value to later life.
Senior Living
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L10 House

A Bizkaia home that frames nature through its garden and watchtower views.
Residential
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Architecture for Experience, Performance, and Care

Founded in 2025 by Jonny Sin, Sin&Co. is a practice built on over two decades of international experience. We design spaces that elevate experience, support wellbeing, and meet the commercial and regulatory demands of complex developments.

The Dorchester sketch
Architects: ReardonSmith

Testimonials

“I would like to acknowledge Jonny's contribution to the realisation of ROOM, his professional attitude and determination have been an essential part of this project. His creative and pragmatic approach to the architectural challenge contributed greatly to the quality of the final work. Jonny's energy and enthusiasm, combined with his architectural understanding and attention to detail, have been invaluable.”

Antony Gormley
Artist

“Jonny has an innate talent for learning, and he has leveraged this talent over the years, from his time as our Project Manager for the Dorchester Hotel renovation (2019) to his current role as Board Director at RSA. He has a deep understanding of what a hotel represents, especially in the luxury and high-end sector. This in-depth knowledge adds value to clients and hotel developers from day one.”

Antonio María Rodríguez 
Former Client | The Dorchester Collection
& The Reuben Brothers 

“It has been a pleasure working with ReardonSmith Architects on our Wanda Vista Hotel. In particular Jonny Sin who has been very helpful especially during our phase of redesign and space planning exercises in seeing what could be achieved with more economic layouts. As our changing brief evolved Jonny was constantly showing patience and alternative layouts to assist informed decisions to be made. I would gladly work with him again.” 

Tim Mills 
Design & MEP Director
| R&F Properties Group 

“During my time as Regional Director and General Manager at The Dorchester, I worked very closely with Jonny. Together with the wider group of interior design teams, corporate colleagues, contractors and I, Jonny collaborated on the conceptual redesign for the significant reimagining of this global icon.  Jonny came with creative design recommendations for new spaces as well as honouring the history and legacy of The Dorchester. At all times Jonny was the consummate professional; calm, poised and solution oriented.”

Robert Whitfield
Former Client | The Dorchester Collection
Insights

News, Insights & Recognition

A space for sharing updates from across the studio. Here, we highlight our latest projects, strategic insights, and sector commentary, alongside award wins and media features.

Sin&Co. Founder Jonny Sin Joins 2025 WIN Awards Judging Panel

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★★★★★ Unpacking the Stars: What Really Makes a Hotel "Five-Star"?

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Sin&Co. Launches: A Boutique Architecture Studio Specialising in Hospitality and Senior Living Design

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Let’s Start a Conversation

Whether you’re developing a hospitality destination or planning a senior living facility, we bring clarity, insight, and creative thinking to every stage of the journey.

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