Rio Tinto has pre-committed to the Midtown Centre in the Brisbane CBD which is schedule to completed in 2021

A mining giant will relocate its Queensland head office after pre-committing to a state-of-the-art Brisbane CBD office tower that won development approval last year.

MINING giant Rio Tinto will relocate more than 1000 employees into a state-of-the-art office tower scheduled to be open by the middle of 2021.

It is understood Rio has pre-committed to a 10-year lease on about 20,000sq m of the 26-story Midtown office tower at 155 Charlotte St which will be created out of the former Health and Forestry House buildings.

Innovative Midtown Centre development gets the green light from the Brisbane City Council

The company will move out of the Dexus-owned 123 Albert St where it holds a 30,000sq m lease of which is has subleased 12,000sq m to Suncorp.

The Midtown Centre is a joint venture between Ashe Morgan and DMANN Corporation which bought the two government buildings in late 2017 for $65 million.

An artist's impression of the Midtown Centre.

Ashe Morgan chairman Michael Moss said: “We look forward to partnering with Rio Tinto to deliver a customised office solution which we believe will create a benchmark for workplaces of the future”.

Designed by Fender Katsalidis, plans for the two buildings will see them merge into a 44,000sq m A-grade office space with campus style 2000sq m floor plates.

It will embrace subtropical design and wellness features such as an 800sq m level 20 sky terrace, club style end-of-trip facility with a complementary wellness centre and active outdoor terrace, inter-floor mixed-mode atriums and a customised fit-out.

The Midtown Centre in the Brisbane CBD will embrace subtropical design and wellness features such as an 800sq m level 20 sky terrace.

DMANN Corporation director David Mann said the 26-month “rebuild” by Hutchinson Builders should be completed by June 2021.

“Mobilisation has commenced on site and two tower cranes will be on the site in the next four weeks,” he said.

Other elements of the rebuild covered by the Brisbane City Council development approval last year include a new laneway connection between Charlotte and Mary streets.

The deal was negotiated by Property Beyond’s Mark Daniel on behalf of Rio Tinto in conjunction with Knight Frank leasing agents Campbell Tait and Mark McCann acting for the owner. They refused to comment.

An artist's impression of the Midtown Centre.

The 26-month “rebuild” by Hutchinson Builders should be completed by June 2021.