The creative team at Carr Design Group gave this Edwardian terrace house in Melbourne, Australia, a modern two-story extension. The Cube House project was designed for a young couple and their two children.

“The couple purchased the site with the intention of creating something extraordinary,” the architects said. “Living in the house for two years gave them a better understanding of the type of spaces they wanted to inhabit — spaces with an emphasis on raw materials, natural light and a sense of openness.”

The modern addition consists of two rectangular concrete volumes stacked behind the original home. The upper level cantilevers over the bottom floor, creating a partially covered outdoor area. The main floor features open-plan living areas.

“Referencing the external facade, the kitchen is monolithic in form with plenty of storage,” the architects said. “Floor-to-ceiling glass doors frame the back garden, blurring the threshold between inside and out.”

The simple color palette in gray, white and black is in tune with the minimalist furniture and decor. This approach sets the tone for a bright and spacious home.

“In contrast to the open spaces downstairs, the new master bedroom wing is a play of contrasts; it is big yet intimate, enclosed but open, luxurious and minimal,” the architects said. [Photos and information provided by Carr Design Group]