edit the existing render without changing architecture geometry or composition facade material ground floor only replace the stucco on the ground floor facade with exposed concrete use architectural concrete with visible formwork panels the panel modulation should be medium size not too small not too large with a clean and simple grid include subtle panel joints and a few tie holes properly aligned and realistic in scale the concrete should be light gray smooth with slight texture and natural imperfections windows keep windows simple and clean no decorative moldings or frames the concrete must meet the window edges directly flush detail preservation do not modify upper facade roof tiles keep terracotta pavement doors or lighting minimalist architectural style clean and realistic photorealistic high detail