Chorus, the telecommunications infrastructure company, said it would start building its ultra-fast broadband network in six more towns from July this year.
The company, which was separated from Telecom last year, said it would start construction of its network in Invercargill, Nelson, Oamaru, Queenstown, Timaru and Whakatane, as well as continuing to extend its fibre network in areas where work is already underway.
By June 2013 Chorus will have delivered fibre past 149,000 premises, the company said in a statement.
Chorus CEO Mark Ratcliffe said construction was gaining momentum.
"Each week, our team lays a further 50km of new fibre optic cable past homes, schools, major health facilities and businesses," he said.