The nineteenth season of Australian reality television series The Block premiered on 6 August 2023 on the Nine Network.

[1] Hosts Scott Cam and Shelley Craft, site foremen Keith Schleiger and Dan Reilly, and judges Shaynna Blaze and Darren Palmer, all returning from the previous season, with Marty Fox stepping in as partial guest judge for Neale Whitaker.

In September 2022, it was reported Nine had bought five classic brick homes in Charming Street, Hampton East, Victoria, for an estimated amount of $14.3 million.

[3] Construction began on the houses in mid-March 2023, and a series promo with a 1950s theme was filmed on the street with the unconfirmed contestants in the same month.

For the first time in any season, the contestants were given the entire renovation schedule for the duration of the build on day 1.