Conversion of an apartment into a duplex

To enlarge their existing property, the owners acquired a two-room apartment on the upper floor in order to create a spacious 150 sqm duplex. The objective was to design a more fluid and comfortable space, adding two bedrooms, two shower rooms, one bathroom and two separate toilets, while maintaining the architectural coherence of the whole.

The interior architect designed a linear circulation layout running alongside the windows, revealing a nearly 13-metre perspective connecting the entrance, kitchen, dining room and living room.

A central walnut volume structures the entire space and conceals doors and storage areas, creating rhythm between uses without visually partitioning them.

This interior design project pays particular attention to the choice of materials and their implementation: parquet layout, alignment of large-format tiles and orientation of the wood grain. Every detail contributes to the overall harmony.

Bespoke joinery elements optimise every square metre of the duplex. These storage units enhance the volumes and adapt to spatial constraints. A home office area was created within a raised alcove in soft tones, preserving a wide opening onto the circulation spaces.

Conceived as a sensory experience, the project unfolds progressively along the journey:

• the mirrored cabinet at the entrance gradually transitions to white lacquer towards the living room;
• the bookcase with contrasting materials interacts with the “Fracture Cosmic X” table (Erwan Boulloud);
• a metal veil (Sophie Mallebranche) filters the light between the kitchen and the staircase.

This project perfectly illustrates a precise, fluid and expressive approach to interior architecture, where materials and attention to detail shape a contemporary living space.