The man who built Millennium Point has been appointed to mastermind the redevelopment of New Street Station.
Martin Chambers, formerly head of Bovis Lend Lease, took over his new role last month and has been reviewing the business case for the £630 million Gateway transformation of Birmingham's main railway station since then.
He is confident that the completed case for New Street - a financial document running to hundreds of pages - will be submitted to the Department for Transport by Network Rail within the next few weeks.
The appointment of Mr Chambers, who has a reputation for delivering high-profile and complex construction projects, is seen as an indication of the importance Network Rail is attaching to the long-awaited modernisation of New Street Station.
While with Bovis, Mr Chambers also delivered the Touchwood Shopping centre in Solihull.
If all goes well and the business case meets with DfT approval, work will start on New Street by the end of 2008 and should be completed by the summer of 2013.
His first task has been to make sure that all of the partners in the biggest city centre scheme since the Bullring - the council, AWM, Pallasades Shopping Centre owners Warners and Network Rail - are happy with the financial calculations. DfT approval is crucial in order to unlock £350 million of public sector funding, with the remainder of the investment for Gateway coming from the private sector.
Mr Chambers said: "The business case was pretty much finished in January but we have been going through it validating numbers and doing work on the design.
"The process has to be robust because at the end of the day we don't want go cap in hand asking for more money.
"I joined in April and the first month has been very much a fresh pair of eyes taking the business case apart.
"I have been asking the obvious questions that people who have been working on this project for a long time have taken for granted."
Describing New Street as the biggest challenge he had ever faced, Mr Chambers said he believed the rebuilt station would act as a catalyst for further regeneration in a rundown part of the city centre.
One of the biggest challenges is to minimise disruption, enabling one of the busiest stations in the country to run as normal during redevelopment.
The project is to be split into two halves, with the first part of the scheme concentrating on building a giant new concourse on what is at the moment the station car park.
When that is completed and open to the public, work will shift to the other side of the station.
Mr Chambers said: "The whole project is very much about minimising disruption. We want four and a half years of people hardly noticing anything is going on."
The ultimate aim, he said, was to open up Birmingham's hidden station.
"If you think of almost any other major station in the country, it forms a major part of the townscape. New Street does not. It is almost invisible.
"We want to change that. The new concourse will be almost seven times the size of the existing concourse, there will be airline-style waiting areas and the idea is to keep customers away from the platforms until the last minute. There is a very complicated message that we need to get out to the wider public. We are proposing very much a gentle systematic approach. There won't be a big bang."