Nothing − except worrying about what time his kids will be home after dark − keeps Darren Steinberg up at night. It's a big call from the chief executive of Dexus. As the man at the helm of one of the biggest owners of commercial real estate in the country, Steinberg is ultimately responsible for $34 billion worth of property that 27,000 shareholders and 79 capital partners have entrusted to the real estate fund manager.

Dexus, the nation's biggest office-building landlord and third-largest industrial landlord, is riding the wave of demand for real estate – be it city skyscrapers, industrial estates, shopping centres or, more recently, medical centres – as investors look for somewhere to put their capital in a low-interest-rate environment.