The Boacava House sit on the banks of Pinheiros River, design by Una Arquitetos. The concrete wall supports construction and divides longitudinally the site giving independence to the facilities areas. This colored block was pigmented with iron oxide. The presence of this molded wall is extended from the reflections of light and follows a transition from external to internal areas. Two concrete columns complete the supports of this level allowing apparent asymmetry in the regular structure.