The Left-Over-Space House, located in the inner-city Brisbane suburb of Paddington, has won first prize in the Completed Building House category at the 2013 World Architecture Festival (WAF), which took place last month in Singapore.

The project was created by Cox Rayner and Australian architects Casey and Rebekah Vallance, who spent 10 years designing and building this home on a three-metre-wide lot they bought after getting married in 2003. Set within an inner-city suburb where empty lots are in high demand, the project was built…