Developer NGM Sustainable Developments confirmed that it had approached the council to discuss the scheme.
NGM deputy chief executive, Espen Strom, said his firm's proposal would satisfy Riverworks' goal to maximise the potential of the city's River Ribble.
Strom said NGM had not appointed an architect and added the scheme was still in 'the earliest of stages.'
However, the Preston Evening Post claimed that 'hundreds of houses - designed with a hollow base like a ship' were planned.
The Riverworks scheme is a joint venture between Preston City Council and South Ribble Borough Council.
NGM is currently working up a similar floating homes scheme in Liverpool for British Waterways with practices Cartwright Pickard Architects and PRC Architects.