Creating Distinctive Homes of Scale and Style
At 1.61 London, we specialise in mansion interior design, creating residences that combine architectural grandeur with personal character. Our expertise spans super prime mansions in London, heritage estates, and contemporary new-builds, each project tailored to reflect the individuality of its owner while celebrating the scale of the property.
As one of London’s leading studios for luxury homes interior design, we bring together creativity, technical knowledge, and development expertise to deliver interiors that are both spectacular and enduring.
Bespoke Mansion Interiors
No two mansions are alike. Some carry the weight of history, with listed status and original features; others are modern residences defined by glass, light, and contemporary architecture. Our role as mansion interior designers is to shape interiors that enhance the essence of the property while reflecting the lifestyle of those who live there.
Our work incorporates handcrafted joinery, bespoke furniture, statement lighting, and tailored finishes – each chosen for quality, longevity, and elegance. This bespoke approach ensures that every mansion interior we design is one of a kind.
Super Prime Residences
As specialists in super prime interior design, we bring cohesion to projects of extraordinary complexity, ensuring every detail contributes to a single, coherent vision.
Mansion Projects Across London
Our portfolio of mansion interiors includes residences across London’s most prestigious neighbourhoods:
- Belgravia – historic mansions reimagined with modern luxury.
- Kensington and Chelsea – family homes that combine grandeur with liveability.
- Mayfair – contemporary mansions defined by exclusive finishes.
- St John’s Wood and Hampstead – expansive private estates tailored for modern living.
Beyond London, our work extends internationally, delivering the same high standards of detail and discretion.

Why 1.61 London For Your Mansion Project
What sets 1.61 London apart from other luxury interior design companies is our ability to unite design with property development. Mansions often demand more than decoration; they require architectural reconfiguration, extensions, or even new wings. Our integrated expertise ensures a seamless process – from vision to construction to interior completion.
With more than 273 projects delivered, we are trusted for our discretion, innovation, and ability to create some of London’s most exclusive mansion interiors.
Begin Your Project
Every mansion deserves interiors that match its scale and presence. At 1.61 London, we create homes that are both grand and deeply personal, setting the standard for mansion interior design in London.
Contact us today to discuss your project and discover how we can transform your mansion into a residence of exceptional elegance.