Isay Weinfeld's 111 House Wraps Four Floors in Continuous Planters

A continuous ring of perimeter planters wraps every floor slab of 111 House, a four-level residence in São Paulo by architect Isay Weinfeld, running unbroken from the ground-level entryway to the rooftop terrace and swimming pool.

The numbers frame the project's priorities. The house packs 517 square metres of built area onto a compact urban plot, yet dedicates 280 square metres to garden — more than half its footprint again in planted surface. That's the mechanism of the design: greenery isn't decoration applied afterward, it's the facade system itself.

Weinfeld designed the house for a family of contemporary art collectors, and the plan works double duty as a gallery. The building organizes its footprint along the left site boundary, leaving a full-depth garden strip along the right side. Primary living spaces, the breakfast room, and upper-level bedrooms all open directly onto that greenery. The arrangement optimizes natural light and cross-ventilation on every level.

A rear setback does quiet work below grade. It opens up the lower level into a sunken lightwell court, pulling daylight into spaces that would otherwise sit in the dark.

How does the facade handle the sun?

Along the northwest elevation, perpendicular concrete wall projections extend outward at varying depths. They function as structural brise-soleil, shading interiors from harsh afternoon sun. The same projections organize the ground-floor social areas and compartmentalize the upper-floor bedrooms — one concrete move doing structural, thermal, and spatial jobs at once.

Inside, a neutral material palette and clean geometric lines keep the architecture quiet so the family's art collection can lead.

What grows in the planters?

Landscape designer Rodrigo Oliveira made a pointed botanical choice. Instead of the broad-leafed tropical flora typical of Brazilian landscapes, he specified wind-resistant, cold-climate species, fine-textured foliage, and varied flowering plants.

The payoff is textural and functional at once. As the vegetation grows, stems and leaves overflow the planter edges and dissolve the structural concrete boundaries. The layered greenery filters natural light entering the home, softens interior views, and forms a privacy screen along all four levels — without cutting the house off from its surroundings.

The project team includes coordinator Monica Cappa; design team Felipe Zene, Nara Diniz, and Bruno Levy; and interior designers Lucas Jimeno Dualde, Carolina Miranda, Daniela Hoffrichter, and Gabriela Chow. Fran Parente photographed the completed house.

As the planting matures and spills further over its concrete edges, 111 House's facade will read less as architecture dressed in green and more as a single vegetated volume — a working model for how dense urban plots can carry substantial gardens without sacrificing a square metre of floor area.