WA duo lose House Rules

Engaged Melbourne couple Lisa Lamond and Adam Dovile will be getting the ultimate wedding gift - a mortgage-free, renovated house.

After weeks of blood, sweat and tears, the House Rules "underdogs" last night won Channel Seven's reality renovation juggernaut, beating Perth Hills grandparents Carole and Russell Bramston.

The couples battled it out in one last renovation challenge scored by judges and design experts Joe Snell and Wendy Moore.

A combination of judges' scores and viewer votes determined this year's winners.

Before the champions were announced on the live final last night, things looked promising for the Bramstons, who had a judges' score of 19 out of 20, ahead of the Melbourne couple's score of 17.

But if Twitter was anything to go by, the odds were in favour of team Victoria, with widespread support streaming in for the young couple.

Lamond and Dovile broke down when told by host Johanna Griggs they had won.

"This means we can get married and start a family," Lamond, 29, cried. "I owe Lisa my life because this is the most amazing thing in the world," a tearful Dovile, 31, said.

The Bramstons, who last month were rocked by magazine accusations they had faked their "Aussie battler" status with a property portfolio worth more than $2 million, were humble in defeat.

"We're sad we didn't win but we're so happy for you," Carole Bramston told the winners.