A report from the Auditor-General has found the Canterbury rebuild is being hindered by a lack of communication between the three public entities running it.
The report examines how well the Canterbury Earthquake Recovery Authority, the New Zealand Transport Agency and the Christchurch City Council are fixing roads and underground infrastructure following damaging earthquakes in 2010 and 2011.
They are working through an alliance called the Stronger Christchurch Infrastructure Rebuild Team (SCIRT).
A senior performance auditor, Abbie Bull, says the three entities lack clarity about what each of their roles are.
Ms Bull says the managers are not getting timely guidance about the direction and priorities of the rebuild.
The agencies are in the process of making improvements, she says.
Ms Bull says the Recovery Authority is the organisation that needs to improve most.
The authority acknowledges it has been inconsistent about its representation at SCIRT and has appointed a permanent staff member to rectify the issue.