Sunderland City Council has appointed Avison Young to find a development partner for its Sheepfolds scheme.
The move comes shortly after the proposals for the 24-acre site were revealed in July.
They include 600 homes, school, community facilities, public realm and a pedestrian bridge connecting Sheepfolds to the south of the river. The development will be brought forward in phases, with the first phase expected to deliver 160 homes and a mobility hub.