Casa 9X20, a private residence in Monterrey, Mexico, has a brutalist design that makes it stand out starkly from the other more conventional houses that surround it in the neighborhood. A nearly perfect cubic volume extends outward from the back side of the house, and the street-facing wall of this volume is covered in untreated cinder blocks — an industrial material plainly counter to the terra cotta and stucco that girds the other residences.
The brutalist aesthetic continues inside Casa 9X20. The ceilings of the house's various rooms are made of exposed cement slats, and the floor is made of polished granite. With a generally white and grey color scheme and large windows that face towards the back of the property, the interior stays bright and airy.