Design meets animal wellbeing.
And nothing gets compromised.
The story behind the brand.
The One Off® is a Paris-based design studio crafting sculptural, high-end furniture for pets and their humans.
Founded in Paris by designer and brand strategist Diane B. de La Serve, the studio offers a collection of sculptural, functional, and ethically crafted pieces that seamlessly blend into refined interiors — and elevate the daily lives of our four-legged companions.
Driven by a passion for aesthetics and animal behaviour, Diane has designed every object with a double ambition: to meet the natural needs of pets (climbing, scratching, hiding, resting) and to serve as collectible design pieces — inspired by minimal art and crafted with French savoir-faire.
I wanted to turn the cat tree into a desirable object — one that speaks to aesthetes, art lovers, and design collectors, as much as it does to animals.
A new language of form — for modern pets.
Born from the idea that beauty and function are not mutually exclusive, The One Off® reinvents pet furniture through the lens of sculpture, architecture and material innovation. From vertical columns to modular cushions and wall-mounted steps, each piece creates a harmonious space for both humans and animals, without compromising on comfort, durability or visual identity.
Crafted in collaboration with renowned partners such as Victoria Artis Art Foundry and Coulon Tapissier, the collections celebrate excellence in French manufacturing and sustainable craftsmanship. Whether in brass, oak or wool felt, materials are sourced with care and made to last.
Before founding The One Off®, Diane honed her creative eye at agencies like Peclers Paris, Monoprix, and Galeries Lafayette, working alongside set designers and architects to translate trends into timeless interiors.
In her own Parisian loft — between a bouclé fabric bench and a wooden stool by Charlotte Perriand — Diane lives with her three cats and dog, testing every prototype at home. From the 4 Steps to Heaven to the Cloud Nine cushion, each item is tested and approved by Neron, Pia, Titus and Haska, her most demanding design critics.
From Paris loft to design statement.
Craftsmanship & French savoir-faire
At The One Off®, every object is born from a commitment to quality, meaning and emotion. Each piece is handcrafted in France in collaboration with esteemed partners who embody excellence in artisanal manufacturing — including Coulon Upholstery, known for its legacy with the Mobilier National, and the Victoria Artis art foundry, specialists in metalwork for artists and designers.
We honour time-honoured techniques and ensure every detail reflects our commitment to quality, durability, and beauty.
Design with purpose
At The One Off®, function and form are inseparable. Our objects are designed to serve the instinctive needs of animals — climbing, hiding, scratching, resting — while enhancing the space they inhabit.
By blending sculptural aesthetics with behavioural insight, we elevate pet furniture into a new category: collectible, functional design for the home.
Our values.
Sustainability, always
We favour local production, sustainable materials, and a low-impact approach across the entire creative process. From sourcing natural fabrics and recyclable metals, to collaborating with nearby workshops, every decision is made with longevity and responsibility in mind.
Empathy as a design principle
Because animals are more than companions — they are muses, cohabitants, and emotional anchors.
Our creative process begins with observation, testing, and interaction. Diane’s own cats and dog play a vital role in refining each prototype, ensuring every object responds to real needs — with generosity and care.
More than a brand, The One Off® aims to build a cultural space where design meets animal care. Diane’s ultimate dream? Creating an art foundation that welcomes abandoned animals, a kind of Château La Coste where art and empathy coexist.
A vision beyond objects.
Because animals have always been muses — silent companions of creation, poetry and peace.
What began as a personal need has become a new design language — one that gives animals the place they deserve in the world of art and interiors.
The One Off® is more than a design studio — it’s a growing ecosystem of creativity, care and connection between humans, animals and the objects that surround them.
Want to know more?
Whether you're a collector, interior designer or fellow pet lover, you’re welcome to reach out.