Felipe Hess renovated Casa M, a family-owned residence in São Paulo. The original house had been altered multiple times and lost its architectural clarity, but the half-level interior layout and site position remained sound. When the owners acquired the adjacent lot, Hess redesigned both the house and the expanded property.

The renovation removed internal walls, one staircase, and the gable roof. New facade openings replace the old ones. The flat roof becomes usable outdoor space. A metal structure connects the levels, running from the new pool through the interior rooms to the rooftop. An elliptical volume on the roof houses mechanical systems and a living area. The structure also functions as a covered walkway and includes a slide and fireman's pole for moving between floors.

Hess added a garage, pool, sauna, and leisure area to the new lot. The outdoor spaces connect directly to the renovated interior. White dominates the material palette: Portuguese mosaic tile outside, painted walls inside and out, white-finished metal structure. Inside, gray polished concrete floors link the half levels. Exposed ribbed concrete slabs, revealed during demolition, remain visible throughout.

The project treats the house and landscape as a single system. The metal structure ties interior circulation to outdoor program, while the consistent white surfaces unify different materials and spaces.