Studio Anna Jach’s House with an Eye in Zurich is an extension and renovation project that centers around sustainable and efficient construction. Commissioned with a clear brief from the clients, a small family, the Swiss architectural practice has extended the home’s entryway, created additional leisure facilities for both residents and guests, and integrated a vast library to house a collection of over 500 books. With eco-consciousness as its driving force, the expansion seamlessly integrates innovative construction, locally sourced materials, and energy-efficient solutions.