Spoiler: Block alliance between House 4 and 5 could be over

This season of The Block has perhaps been the cattiest of them all. While we're normally obsessing over tile choices and painting fails, this year has been all about the drama between dark horses Ronnie and Georgia and the other contestants. 

Last night's episode was no exception, with Jason attempting to sabotage Ronnie and Georgia's outdoor shower efforts. This comes a night after Jason collected almost $24,5000 off Ronnie to use his front and backyard for their ten-tonne pool.  

Jason took foreman Dan off camera to tell him that Ronnie and Georgia's outdoor shower might not be up to code, but told him not deliver the news until after reveal on Sunday. 

Dan checked up on Jason's story by calling the Victorian Building Authority. Everything turned out to be all above board, but the saga clearly got Dan off side. 

"Jason is getting involved with this purely because he doesn't like them. I don't know why," said Dan on the matter. "He's just trying to sabotage them whenever he can."

When Ronnie and Georgia found out about Jason's scheming they were obviously annoyed. "You have no pride obviously. That's embarrassing," said Georgia. Who told 9Homes she hasn't spoken to the other contestants since they finished filming the series. 

All this drama is a far cry from Josh and Elyse and Sticks and Wombat, who've become close while filming. Houses 4 and 5 even made merchandise to prove their north side alliance. 

But, as the video above hints to, the blossoming friendship between the "keep it north" houses might have some rough times ahead once Sticks and Wombat's shipping container pool arrives. 

The Block is on Channel 9 Sunday 7.00pm and Monday to Wednesday at 7.30pm. Follow The Block The Block , catch-up on this season's episodes on 9Now and read 9Homes.