studio vincent eschalier revitalizes historic parisian building for SIA partners' workspace

Studio Vincent Eschalier renovates 17th-century building in paris

Studio Vincent Eschalier completes the renovation of a 17th-century building near the Grand Rex in Paris to serve as the new headquarters for consulting firm SIA Partners. The renovation spans 3,000 square meters across five floors and a basement. On the street side, the original facades are restored to align with the character of the Grands Boulevards, while the commercial ground floor was redefined with new dark granite cladding. Inside, the layout was opened up to create flexible work environments. Exposed technical elements on the ceiling are painted white to reduce visual contrast, and many walls are deliberately left unfinished, revealing texture and construction traces.

all images by J.P. Vaillancourt

A Layered Restoration with Contemporary Elegance

Originally a private home, the structure had been modified repeatedly over the centuries, resulting in a mix of added wings, altered floor heights, and glass canopy insertions. These accumulated changes left the building in a fragmented state, but still with architectural elements worth preserving. The Paris-based architects approached the project by working with these layers, reorganizing the interior, and restoring historic features while introducing a more unified spatial and material logic.

Furnishings, coordinated by MVE-Collection, include light wood desks with linen rubber surfaces that are paired with selections from independent and established design studios. These include pieces by Axel Chay, Margaux Keller, Duplex Studio, and manufacturers such as Silvera and Petite Friture. In contrast to the raw surfaces, built-in cabinets and plants throughout the space introduce softer tones and a more domestic atmosphere.

Several distinct materials define different parts of the building, with terracotta tiles lining the restrooms, circulation zones marked by mineral finishes, and the central atrium paved in irregular opus incertum stone. This atrium, once a formal courtyard, is now enclosed with a glass roof and functions as a central gathering space. The rooftop of the rear structure, previously underutilized, has been converted into a planted terrace accessible to staff.

Studio Vincent Eschalier completes the renovation of a 17th-century building near the Grand Rex in Paris

the new headquarters for consulting firm SIA Partners

revealing texture and construction traces

exposed technical elements on the ceiling are painted white to reduce visual contrast

the commercial ground floor was redefined with new dark granite cladding

light wood desks with linen rubber surfaces are paired with selections from design studios

the renovation spans 3,000 square meters across five floors and a basement

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built-in cabinets and plants throughout the space introduce softer tones

the structure had been modified repeatedly over the centuries

this atrium, once a formal courtyard, is now enclosed with a glass roof

the original facades are restored to align with the character of the Grands Boulevards

project info:

name: SIA Partners Headquarters
architect: Studio Vincent Eschalier | @studiovincenteschalier

location: Paris, France

area: 3,000 square meters

design team: Caroline Puleo, Elisabeth Duboys Fresney, Mattéo Lécuru, Lili Mangin

client: SIA Partners | @lifeatsia

photographer: J.P. Vaillancourt | @jpvaillancourtimages

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edited by: thomai tsimpou | designboom