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