GAD Editorial · Published · · English study · Chinese summary · Study dated 2026-10-05
A balcony is often discussed at the scale of an elevation, where repeated edges create rhythm or a changing outline. Residents encounter it through a door, a piece of furniture, a neighbouring window and the decision to step outside. Aqua Tower in Chicago and the Grand Parc housing transformation in Bordeaux can be compared at that smaller scale. Their different contexts make a shared question clear: what turns extra exterior space into a useful part of a home?
An edge shaped for different conditions
Studio Gang describes Aqua’s varying floor slabs as responses to views, sunlight and use. The terraces are intended to extend outdoor connections into a tall building, including oblique relationships between neighbours and views through the surrounding city. These are the practice’s stated design aims, not independent measurements of residents’ social lives. Aqua project record
The variation matters because it resists treating a balcony as the same narrow strip repeated everywhere. The shape can be read in relation to the room behind it and the particular view beyond. Yet a wider projection alone cannot establish comfortable occupation. Door positions, furniture clearance, exposure and privacy still affect whether the space can support an ordinary activity.
A Smithsonian collection record preserves an early Aqua drawing for mobile privacy screens on terraces. Its status as an early concept is important: it demonstrates that privacy was explored during design, without proving those screens were installed. Smithsonian drawing record
Additional space alongside an existing home
At Grand Parc, Lacaton & Vassal, Frédéric Druot and Christophe Hutin transformed occupied housing by adding winter gardens and balconies while retaining the main existing building. The architects emphasise spaces generous enough to be used, extending the apartment’s relationship with outside rather than simply changing its appearance. Architects’ project record
This produces another kind of inhabited edge. The comparison must distinguish the winter garden from the open balcony, since their enclosure and possible uses differ. Calling both exterior space would conceal the layered relationship that makes the intervention worth examining. The added depth sits alongside existing rooms and therefore changes how their edges can be occupied.
Choice is a design requirement
Our reading is that both projects offer more than a view from behind glass, but they reach that position differently. Aqua shapes the new building’s perimeter around variable conditions. Grand Parc adds a new spatial layer to an inherited residential arrangement. The appropriate comparison is the resident’s range of choices, not the similarity of their facade photographs.
Draw one room and its adjoining outdoor or intermediate space in each project. Locate the access door, a plausible seated position and the nearest neighbouring view. Keep furniture illustrative and dimensions tied to published drawings. Then ask whether someone can choose contact or withdrawal without losing the use of the whole space.
This small-scale reading makes privacy as important as sociability. It also prevents a design intention from becoming a claim that neighbours necessarily interact or that every season offers equal comfort. The Aqua Tower and Grand Parc records are strongest as prompts to examine an inhabited boundary, where architectural generosity has to become practical choice.