This project is characterized by the delicacy of the intervention. The existing house was commissioned to Oscar Niemeyer's office, but designed and signed by Carlos Lemos in the early fifties and even today conserved with few changes. The renovation and expansion to adapt it to an office and study centre tried to preserve as much as possible from the original architecture, both internally and externally.
The main entrance was moved to the area of least movement to better organize the pedestrian and car access, focused on valuing the large garden area. Two very light marquees of exposed concrete expand contact with the outside areas creating spaces for events around the auditorium. The existing lounge area incorporates the balcony space with columns to create a broad and full auditorium through the descending floor.
The slabs of the new marquees make clear the intervention using exposed concrete and structural lightness with an ingenious single line of columns, balanced by steel rods. A red concrete wall reinforces the separation of the parking courtyard and values the new landscape garden and access courtyard, revitalized with a reflecting pool. Upstairs, the old bedroom area was transformed into an integrated workspace supported by small meeting rooms.
Decisions on building materials followed some information from the existing house, the clarity of the proposed new volumes and also accessibility, comfort and acoustic quality required especially in workspaces and the auditorium. The new marquees and red walls in exposed concrete mark the strongest interference on the old structure. External floors are made of fulget (granite) and the interior floors are made of wood in the halls and passageways, auditorium and meeting rooms. The carpet was used exclusively in the area for workstations. Plaster lined acoustic plates in the auditorium generate comfort during meetings and lectures. The green garden over the two new marquees was the solution adopted for motion control, thermal control, and the view from the upper floor.
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