Brad and Lara impressed the judges with their roof terrace, and luckily too. As it turns out, without that Room Reveal win, they may not have had enough money to finish their home.

"After this win, we're back to breaking even," says Lara, clearly relieved. "Well, not exactly even, but it means we can go into doing our lounge room with a bit of money. If we hadn't won this, we would have been struggling."

And they know they've still got a ways to go until they're on par with the brothers, who have won the most to-date.

"We haven't really been extravagant," Brad adds. "Our artwork was probably our most expensive item — and those fridges for upstairs. It's not like we've gone out and bought expensive bed linen. We've been mindful throughout."

And they'll continue to be throughout the rest of the competition.

"We are just going to try and do as much as we can ourselves," Lara explains.

"I am making a dining table. I have a nice piece of Tassie Blue Gum and I've seen a picture of the table I want to make — it's going to be an interesting week," Brad adds.

Will the rest of the couples follow Brad and Lara's lead and go DIY? We'll have to wait and find out...