The corporation's governors have given the conditional thumbs-up to the Salford Media:City UK project, which is being drawn up by a growing number of architects - among them Wilkinson Eyre and Chapman Taylor.
However, a final decision on the move is still dependent on negotiations over the BBC's licence fee, the outcome of which is due early next year.
Unless the BBC gets a 'favourable' fee agreement, the governors could yet decide to pull the plug on the scheme to create a new regional base for almost 1,500 of its staff.
Since winning the bid to land the £400 million development back in June ( BBC chooses Salford scheme as its Northern home), it is understood the throng of architects involved in the project for landowners Peel Holdings has continued to swell.
According to sources, there are at least five different practices working on the 700,000m 2retail, studio and housing scheme including the Fairhurst Design Group, Benoy and Gillespies.