The Greens are claiming the wealthy Brisbane seat of Maiwar as their first to be won at a Queensland election, attributing what they say is a historic victory to a nationwide swing.

The LNP's ousted member conceded defeat last week but Labor and the Greens' Michael Berkman have been fighting it out on preferences.

While the result has not been declared, Mr Berkman is about 1,300 votes ahead on a two-party-preferred basis.

"This morning we're claiming victory in the seat of Maiwar, which is obviously a historic moment for the Queensland Greens, for us to win our first seat in the Queensland Parliament," he said.

"Also we need to recognise that we've had a huge result across the state with over 10 per cent of the vote."

Initially the LNP was well ahead on primary votes, but lost what was a blue ribbon seat on the distribution of preferences.

The possible Maiwar result comes just weeks after the Greens won their third Lower House seat in a Victorian by-election, defeating Labor in the inner-city seat of Northcote.

Mr Berkman said he was confident his projected win was not solely due to new compulsory preferencing and a recent electoral redistribution.

"I think that trend [of swing towards the Greens] is evident across the country," he said.

"The Greens really are taking their position as a political force. The Northcote result just indicates it's a nationwide surge."

'We want to see an end to corporate donations'

Vote counting continues for the Queensland election more than a week after polls closed, with Labor looking like it will hold a fragile majority of one seat.

The Greens' campaign promises, including $1 public transport, free childcare, and housing for every homeless person, drew criticism from rival candidates as unaffordable.

But Mr Berkman argued he was not afraid of wealth redistribution and his policies were "well costed".

"We want to see real reform on land clearing, [and] things like the proposal to ban developer donations," he said.

"We say it doesn't go anywhere near far enough — we want to see an end to corporate donations across the board so that people can have faith decisions are being made in the public interest."

Mr Berkman said his party would soon no longer be seen as a party of protest, but one that could one day form government.

"I absolutely think the Greens are absolutely a party that's moving into a position where we will be involved in forming government at some point in the future," he said.

"These policies which we've put are popular because they speak to the issues that people really need dealt with in their daily lives."