Project

Courtyardhouse Extension Bläsiring

- Basel, Switzerland

A timber-frame extension in Basel's heritage-listed ensemble, preserving commercial ground use.

Building with timber-frame extension and balconies surrounded by greenery and climbing plants.

A multi-story building with a timber-frame extension and balconies, surrounded by greenery and climbing plants.

Story

Courtyardhouse Extension Bläsiring

A timber-frame addition in Basel's heritage-listed ensemble The Courtyardhouse Extension at Bläsiring 15b in Basel represents a sensitive approach to urban densification within a heritage context. This project, led by squadra, sought to enhance an existing structure with a vertical timber-frame extension while maintaining the commercial viability of the ground floor. The design process was closely coordinated with heritage conservation authorities to ensure the historical integrity of the ensemble was respected. Set amidst a lush courtyard, the new extension introduces a delicate layer of balconies that harmonize with the existing architecture. The project was executed with squadra's dual role as both designer and craftsman, allowing for meticulous attention to detail and seamless integration of various trades on-site. This hands-on approach facilitated a collaborative environment, resulting in a cohesive and contextually aware architectural intervention.

Design Highlights

Timber-frame construction respecting heritage guidelines Preservation of commercial ground floor use Integration of delicate balconies enhancing spatial quality Close collaboration with heritage authorities On-site craftsmanship ensuring precise detailing

Key Facts

Detail Description
Location Basel, Switzerland
Year 2025
Architect squadra
Structural Engineer Schmidt+Partner Bauingenieure AG
Landscape Architect Saum GmbH
Fire Protection Winter + Walther AG
Building Physics Kuster + Partner AG

Technical summary

Updated 3/24/2026

Finishes

  • facade: White plaster facade with wooden balconies.
  • interior: Wooden floors and ceilings with modern finishes.

Materials

  • timber — Used in the timber-frame extension and balconies.
  • glass — Used in windows and doors for natural lighting.
  • metal — Used in railings and structural elements.

Construction / Systems

  • timber-frame: The extension is constructed with a timber-frame system, allowing for precise on-site detailing.

Products

  • Not specified

Palette / Lighting

  • Colors: white, natural wood tones
  • Lighting: Abundant natural light through large windows.

Images

Building with timber-frame extension and balconies surrounded by greenery and climbing plants.
Exterior view of a building with white facade and wooden balconies, surrounded by leafless trees and a courtyard.
Balcony with metal railings and white fabric panels for shade, supported by wooden beams.
Wooden balcony with table and chairs, wooden ceiling, and glass doors.
Modern interior with wooden floors, dining table, stove, and kitchen area with large windows.
Room with wooden ceiling, blue door, and large open window with exterior view.
Room with wooden-framed glass doors leading to a balcony, overlooking buildings and trees.
Exterior view of a building with brick and wood elements, balconies, and trees in the foreground.
Building with ivy-covered walls and a metal staircase on the roof.
Aerial view of a city block with a central courtyard surrounded by buildings and a nearby waterfront.
Floor plans of a building with roof, upper floor, and ground floor layouts.
Section drawing showing a building extension with balconies and a tree.
Section drawing of a building extension with detailed annotations and construction elements.

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