Tonn Design is a design studio specializing in interior architecture, design consultancy, and custom-made furniture and textiles. Based in Miami and Istanbul, the studio works on a range of residential and commercial projects, blending global perspective with local craftsmanship.

​

Led by Owner & Lead Designer Ilhan Caylak, an interior architect known for a thoughtful and refined approach, Tonn Design offers a tailored, human-centered design process. Ilhan brings together spatial harmony, aesthetics, and cultural awareness in each project — believing that design is not only about how a space looks, but how it works and feels.

We provide end-to-end interior design services, from initial layout planning and material selection to custom furniture design and styling.

 

Our consultancy services support clients, developers, and fellow designers in decision-making processes — offering creative direction, sourcing guidance, and design alignment.

In addition to our interior work, we also develop limited-run furniture and textile pieces, crafted in collaboration with skilled artisans in Istanbul. These collections reflect the studio’s signature: tactile, refined, and timeless.

​

Tonn Design is committed to creating environments that feel authentic and intentional — places where form meets function, and where each detail supports a larger story. Whether you're building a new home, refreshing a space, or searching for distinctive pieces, we design with clarity, care, and character.