Work on a £100 million redevelopment of a prime Birmingham city centre site off Great Charles Street will begin early next year, developers announced last night.

HBG Properties, which is believed to have paid more than £25 million for the derelict two-acre site, said a mixed-use scheme including offices, housing and car parking would be completed by 2010.

The project will also involve building a new footbridge across Great Charles Street, connecting the city centre and the Jewellery Quarter.

The land, which consists of surface-level car parks, was to have been the home for Birmingham's new coach station. It was remarketed by the council after the coach station plans fell through.

Ken Hardeman Birmingham cabinet member for regeneration, said: "HBG's track record and resources mean this site will finally be regenerated after years in the doldrums. I'm particularly pleased that the scheme will enable a major improvement to the footbridge over Great Charles Street.

"The capital receipt will enable opportunities to address connectivity to the Jewellery Quarter in innovative ways."

HBG's schemes have included Birmingham Great Park and the construction of buildings at Brindleyplace.

Regional director Peter Burford said: "HBG Properties is delighted to have been chosen.

"We intend to create a building worthy of the prominence of this site, and will be working hard over the next few weeks to conclude the formalities, before sitting down with the planners.

"We are keen to incorporate ecologically advanced design."