Buyer's Advocate Night is one of the most important milestones on The Block. This is the night the Blockheads will get an idea of what other people (aside from the judges) really think of their handiwork. The feedback received will give the contestants a clear idea of whether they're on the right path, and most importantly, who the experts think will win at the impending Block auctions

In past seasons, only a trio of veteran buyers' advocates were allowed to view the apartments. These experts – namely, Greville Pabst, Nicole Jacobs and Frank Valenti – returned again this year for an exclusive tour of The Block 2019 houses , but this time, they were joined by a hundred potential buyers.

"We wouldn't usually take buyer's through something that was three quarters of the way finished," said Nicole Jacobs, "but I think it was imperative to get their feel and whether the contestants were on mark and whether or not they're meeting the market at the moment".