The decision of a flamboyant property tycoon to squeeze more money from a development by shrinking apartments serves as warning to off-plan purchasers.

Salim Mehajer, who has recently been at the centre of tabloid media attention after staging one of Australia’s most ostentatious wedding ceremonies, plans to earn a staggering $45 million in additional profits simply by manipulating the walls of an apartment complex in western Sydney. Off-plan purchasers of units in Mehajer’s…