The 7 must-know numbers of the week

The number of suburbs out 601 tipped as hotspots by Smart Investor magazine that are expected to show strong capital growth in 2012. Out of the 601 suburbs, only 19 are expected to show price appreciation of more than 5%, with eight each in NSW and Western Australia and three in Queensland. Hotspots in the other states are set for growth of 4% or above.

The reputed price achieved for Mosman estate Mandolong House, which sold despite a warning that Mosman is in a "huge state of distress". Its reputed buyer is to Markus Kahlbetzer from the polo playing pastoralist family headed by John Dieter Kahlbetzer.

The new price hopes for Jennifer Hawkins' Coogee pad. It was passed in at December auction on a $2.5 million vendor bid, and Hawkins paid $2.27 million for it in late 2008.

The estimated cost of Australia's first Frank Gehry-designed building. The 12-storey structure was designed for the University of Technology, Sydney and was greenlit this week. Construction is due to start within months.

The amount per week that Melbourne comedian Libbi Gorr is asking for her North Bondi house. Gorr has returned to Melbourne with her partner, freelance film and television producer Stewart Burchmore, and their two children.

The gross rental yield a private investor has secured for Docklands premises of James Squire Restaurant and Bar, which sold for $4.3 million. James Squire Restaurant and Bar pays a current net rental of $400,000 per annum with fixed annual 4% rental growth.

The expected rental growth for Perth CBD offices over the next four years, according to CBRE. Perth is expected to be the strongest-performing office market, but Melbourne risks oversupply.