Developer Karis plans to bolster its case for King Alfred's with additional documents in the wake of council confusion over the scheme's impact.
As a result, the project's planning application will have to be publicly advertised by the council for a second time.
It is believed that Karis will be addressing various 'gaps' in its original planning application.
These include its desire to include more housing on the site than is allowed by the Brighton and Hove Council's local plan.
A spokesperson for Karis said: 'Further information, over and above that initially agreed with the local planning authority, will be submitted in support of the planning application later this month.'