Deceptive in its external simplicity, this apartment building in South Delhi internalises three interlocking, yet separate, duplex apartments. While all three apartments cover an equal area of 200 square meters, each unit varies from the other through a precisely and uniquely located private duplex staircase, which in turn generates a unique layout for each apartment. The building form is a direct manifestation of complex internal geometries.

An internal courtyard, located centrally in plan and expanding in section, draws light deep into the core of each apartment. A dense repository of trees, shrubs, and creepers grow, and are visible from all three apartments, making the courtyard into a green “lung”, a breathing space that is both aesthetic and performative.