The AIM-listed firm said overall turnover shot up 159% to £18.7m in the six months to 31 October, with UK profit coming in at £300,000.
On a group level, Purplebricks narrowed losses from £6m to £2.2m.
Chief executive Michael Bruce said: "Although we recognise that the UK market backdrop is tough, we continue to have a confident outlook for the future.
"We have momentum, a superior, low fixed-cost flexible business model and a strong balance sheet, which we will leverage further in the early part of the busier spring market so as to build on our success to date."
The company said it sold and completed on £2.5bn of property in the period.
Speaking about its Australian business, which launched at the end of August, Bruce said he was confident the success of its UK business could be replicated down under.
He said: "Our technology, marketing expertise and strong culture, coupled with our low fixed cost business model makes us best placed to win in this market."
Purplebricks is backed by fund manager Neil Woodford and a group of prominent investors.
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