Brisbane City Council has spent the past two years secretly snapping up the bushland equivalent of more than 400 Suncorp Stadium playing surfaces.

Brisbane ratepayers have been forking out about $30 million a year to fund council’s ambition to secure 10 years' worth of bushland acquisition, equalling 750 hectares, in just four years.

Brisbane City Council will spend $120 million acquiring about 750 hectares of bushland in four years.

The council announced its fast-tracked bushland acquisition program in 2016.

So far in the 2017-18 financial year, the council purchased 25 hectares of bushland at Keperra and Burbank, bringing the acquisition’s halfway total to 400 hectares, or more than 400 sporting fields.