KA11 is a boutique residential building located in central Sofia, in the Lozenets district. Designed by IPA - Architecture and more as part of the architectural design, it transforms the dynamic urban environment through a careful balance of scale, materials, and context. The building includes five residential floors, one of which is an attic level, a ground floor with commercial spaces, and an underground level. KA11 is part of the IPA - Architecture and more portfolio of residential buildings.
Located at a five-way intersection within an ensemble of cultural heritage buildings, KA11 acts as a mediator between contrasting architectural environments. The historic greenery of the old neighborhood with its low-rise buildings, the imposing presence of a 14-story socio-modernist block, and the silhouette of the nearby church form a unique context in which the volumes of the existing buildings range from low residential structures to high-rise blocks, creating an additional challenge for integrating the new project.
The main challenge in developing the architectural concept was defining a refined and precise architectural language that responds to the context of a small residential building within such a diverse urban environment. The titanium-zinc facade plays a central role in this architectural dialogue, combining a contemporary approach with references to historic elements and creating a strong visual presence. It directly references the nearby church, with the form of the titanium-zinc cladding and its irregular openings creating a fluid yet structured composition that allows the building to integrate organically into its surroundings. The use of two different colors for the titanium-zinc facade adds visual dynamics, while the upper part of the building features an irregular pattern that creates varying shades of gray. Titanium-zinc is highly malleable, easy to process, and durable.
The interior of KA11 redefines urban living through eight individually designed apartments. Moving beyond conventional layouts, the residences offer personalized spatial solutions that respond to the lifestyles of their occupants. The result is architecture that is not only visually distinctive but also responds to the needs of the contemporary city and its residents.
