The family of seven from the south-western suburbs of Sydney have flipped The Block Challenge apartment they won to become multi-millionaires.

It was a happy ending to The Block's Monopoly - The Block Special Edition competition last year: Samantha Bolton and her husband Geoff Elvidge, parents to five children and from Woodbine near Campbelltown, had the winning golden ticket.

Scott Cam distilled public sentiment well, saying: "When I heard that the winner was a true-blue Aussie battler from the suburbs I couldn’t have been happier."

The formerly struggling family of seven won the biggest giveaway in Australian TV history – a multi-million-dollar Block luxury apartment at the Gatwick Hotel.

Now, they have sold the beautifully renovated St Kilda pad for more than $2.7 million, according to Domain.

Winners are grinners. (Nine / Andrew Tauber)

Listing agent David Wood, director of Hocking Stuart Albert Park, says the location was a factor in the decision to sell.

"They’re in Sydney and they contemplated potentially moving the family here,” Wood tells Domain.

"They eventually decided it wasn’t right for them as a family in Melbourne because their life’s in Sydney. And it wasn’t right for them as an investment."

The Challenge Apartment was the pinnacle of the team's designs, the kitchen a stand out. (Nine)

He introduced a local Melbourne buyer and the home changed hands off-market. That buyer also owns another apartment in The Gatwick, and plans to lease it out as he has done with his previous buy.

You can expect it to be leased upwards of $2400 per week.

While not disclosing the final sale price, Wood did say the apartment a level above sold for $2.77 million -- which was slightly higher than what the NSW family secured.

Either way, a sale price above $2.7 million has changed this family's life forever.

It really is. (Nine)

There's been a lot of action at The Gatwick lately, with Rebel Wilson even staying the weekend in Jess and Norm's penthouse, revealing she 'loves The Block' and is a fan of Nine's hit renovation show.

Read more: Tour The Block's Challenge Apartment in The Gatwick

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