Archello Awards 2026 · Enter your projects before 30 September 2026
Archello Awards 2026 · Enter your projects before 30 September 2026
SPONTINI
Hapi Photography

Spontini, a wood and stone story

The building is located in the 16th arrondissement of Paris, on an atypical plot created by the early 20th-century opening of Rue Thiers, where a small corner garden once stood. The building comprises 5 residential units totalling 500 m² and two office spaces totalling 1,000 m², for a combined floor area of 1,500 m². The design favors sobriety and dialogue with the existing post-Haussmannian fabric. Rather than maximizing the buildable envelope allowed by planning rules, the project deliberately steps back to preserve the visual legibility of the neighboring 19th-century building's gable wall. The facades curve and fold to follow the urban perspectives typical of a corner plot, while echoing the horizontal rhythms of adjacent buildings at varying street levels. Nearly 100 m² of planted rooftops and terraces extend Paris's green network and contribute to stormwater management.

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An innovative hybrid structure

The construction combines massive stone facades, timber framing, steel structure, and concrete. Its structural originality lies in the load-bearing stone facade, which directly supports CLT timber floor panels resting on transverse steel frames. Concrete beams and walls handle the cantilevered facade overhangs and upper-level setbacks. A timber-framed wall with external insulation is used on the courtyard side as it is a pragmatic and economical approach echoing historical construction logic.

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Two local stones

Two regional stones were selected for their mechanical and aesthetic properties. Euville limestone (Meuse), denser and more compressive-resistant, is used at ground level to carry the upper floors' loads, as well as for window sills. Saint-Maximin stone (Oise), lighter and smoother in finish, clads the upper levels and harmonizes with the surrounding buildings' color palette. The transition between the two stones is marked by a recessed joint, continuing the Parisian tradition of a robust base topped by a lighter facade. Stone blocks are large-format, with bed heights ranging from 43 to 60 cm, widths up to 120 cm, and depths of 30 to 40 cm. Wide bays feature flat-arch lintels with a mullion concealing the aluminum window frames, while the underside of the cantilevered section is clad in stone panels bonded to a honeycomb backing, aligned with the overall facade coursing pattern.

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The project has been awarded the Prix de la Construction Pierre 2025 - Catégorie Logement and presented in multiple events. 

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Project credits

Architects
Engineers
Engineers
Engineers

Sustainability

Prix de la Construction Pierre 2025 • Catégorie Logements
2025

Product spec sheet

Ceramic Floor
Acoustic Walls and Ceilings
Interior Doors

Project data

Project Year
2025
Category
Apartments
Primary Building Material
Stone
Wood
Building Area
1500 m2
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