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.

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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.

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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.

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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.