The city council's draft plan for central Christchurch has proposed a $2 billion smaller, greener, low-rise city centre.
Mr Brownlee said volume one of the council's Central City Plan - featuring the vision for the city centre - would be accepted in the main, but transport aspects would be "put to one side for the time being".
Today's announcement was not a commitment to financing all projects in the plan, Mr Brownlee said.
Christchurch mayor Bob Parker called the unit a "true partnership".
It was the best way of handling the important task of rebuilding the central city, Mr Parker said.
Property developer and head of the City Owners Rebuild Entity Group, Ernest Duval, says it's a positive step forward.
"For this unit our role will be to fast track consents and resource consents and really to adopt a can-do attitude towards development.''
Ernest Duval says he understands the unit won't be taking any powers away from the Christchurch City Council - but rather they'll have to work together in a collaborative fashion.