Argentinian architect Hernan Landolfo has extended an apartment in Buenos Aires and reorganised the living spaces around a double-height atrium with an olive tree growing in the centre.

Landolfo was enlisted by his clients to expand their living space to include a home office. He determined that the best way to increase the useable area would be to enclose the volume defined by its courtyard, thereby adding a floor to the apartment.

"The main operation is to complete the volume by means of a light, transparent structure, as well as the colonisation of the terraces with a simple flooring," explained the architect. The project is dubbed Casa Juramento, after the street it is located on.

Visitors enter the 90-square-metre apartment via the double-height, glass-enclosed atrium, which was previously the open courtyard. This space centres around an olive tree. Landolfo said the tree and courtyard provide a visual connection between interior spaces. "On the ground floor, the olive tree visually affects the rooms it articulates," Landolfo said.

The newly-enclosed space is finished with hardwood floors, creating a more comfortable interior surface. Above the kitchen is a home office, which can open completely onto the courtyard to overlook the olive tree.

On the opposite side, above the living room, is the owner's new bedroom. This space is wrapped with translucent glass, which offers them some privacy, while still admitting plenty of daylight.

"On the...