This compact extension at the rear of a suburban house in Melbourne, Australia, includes a ground-level garage on its street-facing side, a studio guest suite on the first floor, and a roof deck—all of which are designed to be versatile and convertible. 
What's more, is that on the ground level, the north face of the building is connected to a pool and outdoor terrace that links the extension to the main house.  Photo 3 of 11 in Dwell’s Top 10 Outdoor Spaces of 2017 from A Creative Brick Extension That’s Designed to Adapt With a Growing Family’s Needs

Dwell’s Top 10 Outdoor Spaces of 2017

3 of 11

This compact extension at the rear of a suburban house in Melbourne, Australia, includes a ground-level garage on its street-facing side, a studio guest suite on the first floor, and a roof deck—all of which are designed to be versatile and convertible.