Eduardo Longo and the Casa Bola: when housing becomes a module

When he conceived the Casa Bola, between 1974 and 1979, in the Brooklin neighborhood of São Paulo, Eduardo Longo knew that the proposal was eccentric, but his thinking went far beyond aesthetics. The spherical structure was, above all, a housing prototype — a built manifesto that synthesized his vision of the city. More than a house, it was a module: a unit that could be mass-produced and connected to large urban structures, forming flexible and independent clusters.

The choice of form was not a mere formal gesture. The sphere, structurally efficient, distributes loads uniformly and reduces the need for internal supports. In Longo’s thinking, this meant spatial freedom and constructive rationalization. The Casa Bola was built with experimental techniques and industrial materials, and the architect himself took an active part in the construction — living there, working there, testing in practice the possibilities of what he advocated.

Exposição ABERTO5 na Casa Bola (Ruy Teixeira/CASACOR)

The residence functioned as a laboratory: zenithal lighting, compact vertical circulation, integrated projects. Every decision pointed to a less compartmentalized and more adaptable way of living. At the same time, the house challenged the city’s orthogonal landscape, asserting itself as a foreign body — almost a capsule set down on the urban lot.

Housing as an industrial product

The most radical aspect of the project lay in the idea of mass production. Longo imagined that his spheres could be manufactured like automobiles, on an assembly line, and later transported to support structures — megastructures where different modules would be "plugged in". Thus, each resident would have their autonomous unit, with no party walls, preserving privacy and identity, yet integrated into a larger collective system.

Maquete projeto habitacional de Eduardo Longo (Reprodução/CASACOR)

This vision resonated with the experimental spirit of the 1960s and 70s, a period marked by utopian proposals in international architecture. In Brazil, however, Longo diverged from the prevailing rationalism by seeking not only efficiency, but also to reinvent urban logic.

(Divulgação/CASACOR)

In practice, his utopia was not replicated at scale. The Casa Bola remained a unique exemplar. Even so, his thinking echoes in contemporary discussions about modular housing. In a context of housing crisis and ecological urgency, the idea of reducing waste, optimizing resources, and producing dwellings with greater industrial control is once again gaining strength.

A legacy that returns to the debate

The reopening of the Casa Bola to the public, now occupied by the ABERTO5 exhibition, rekindles interest in the experimental work of architect Eduardo Longo. The exhibition transforms the residence into an exhibition space and invites artists to dialogue with its architecture, allowing visitors to experience up close the project that marked the history of Brazilian architecture.

Exposição ABERTO5 na Casa Bola (Ruy Teixeira/CASACOR)

Longo’s proposal may not have come to fruition at scale, but it remains timely in its fundamental provocations. By revisiting his work — now accessible to the public for the first time — the Casa Bola ceases to be just a singular object in the São Paulo landscape and reaffirms its power as an architectural manifesto.