On Tuesday night the Blockheads went offsite to Bendigo were tasked with making over studios for non-profit organisation Kids Undercover with the chance to take home a $5,000 prize.
And on Wednesday night the winners were revealed with Kerrie and Spence scooping up the prize thanks to their studio being most on brief.
Their design brief was 17-year-old female who needs a calm space and loves purple, blue, netball and Dolphins. The judges found the space calm and functional with Jo gushing, 'It's beautiful'.
'It's not just about the money, it's just good to do something good for the kids,' remarks Spence.
Back to The Gatwick, it's day four of ensuite week and Kerrie and Spence are still celebrating yesterday's challenge win.
Blockhead villains Hayden and Sara are banking on a room win this week after coming dead last in the past two room reveals and being highly criticised by the judges.
Tumultuous Sara is even keeping their $8000-dollar brass bath and secret weapon wrapped up in their bedroom where she can nurse it and look after it.
'If it's not a win, I'm walking off,' Sara insists yet again after threatening to leave the show if they don't triumph.
Sara can't stop touching the bath and leaves it beside her bed, so she can safely guard it. 'It's my baby,' she coos.
But Scotty isn't too happy. He has grave concerns for their budget and estimates their en-suite will cost a whopping $70,000.
Thankfully Alice from Domain returns for walk arounds and the weekly chance for the couples to win $5000 cash for their apartment build and $5000 towards their auction marketing campaign spend.
Sara shows Alice her mood board explaining their bathroom will be fit for royalty – Prince Harry and Princess Megan to be exact.
Sara's confidence pays off and the couple scoop this week's Domain prize. 'When we found out we won, we were proud as punch,' Sara enthuses.
'Hopefully we do win the room reveal because we cannot afford to not win!' she laughs.
But Sara and Hayden only remain third on the leaderboard with netballers Bianca and Carla on top.