Here’s why H. Wayne Huizenga’s mansion and others may benefit from selling through auction

They can be described as dream homes, these two waterfront mansions in Fort Lauderdale that take luxury to new heights.

One is a sprawling $27 million estate owned by the late billionaire H. Wayne Huizenga, whose auction begins Tuesday. The other is the $36.25 million Bella Fortuna estate, patterned after a Venetian palace.

So why are the owners of such trophy properties turning to auction companies to make the sale? Despite the presence of millionaires and billionaires across South Florida, the available pool of people who can pay lofty prices is thin. So it takes a special marketing and sales effort to generate enthusiasm for the properties, experts say.

Concierge Auctions of New York and Austin is working with local brokers to attract buyers for each.