Mobile food vendors will be able to operate from boats inside the $2.6 billion Elizabeth Quay development, according to tender documents lodged by the State Government.
The documents suggest the vendors will operate in a similar manner to the Geelong Waterfront in Victoria where seafood is sold from boats moored at a pier.
They will be located at the north-eastern corner of the inlet precinct - the area set aside for pop-up and mobile vendors.
At least three temporary operators could operate in this area at any one time.
According to the documents, the Metropolitan Redevelopment Authority will retain ownership of the three food and beverage outlets within the inlet, with the intention of leasing them out as cafes, restaurants and bars.
The Station Park outlet, on the north-east corner, will provide 400sqm of restaurant and bar space over three floors, including alfresco areas on each floor.
The Eastern Promenade outlet will have 575sqm of space over three levels, including a roof deck.
And the historic Florence Hummerston kiosk will be reconstructed on the inlet island, providing 460sqm of leasable space. This is intended to include a family-friendly cafe during the day and a function area at night.
The heritage-listed Florence Hummerston kiosk was built on the Esplanade Reserve in 1927 and provided refreshments and changing facilities for sporting events on the reserve.
It was named after the first woman to be elected to the Perth City Council.
The kiosk has been used as a nightclub, cafe, sporting club, day-care centre and a fine-dining Cantonese restaurant.
The tender documents, which seek an agent to provide leasing and property managements services for the outlets, suggest the restaurants, cafes and bars should be opened by the spring of 2015.
Work on the inlet is well under way, with the permanent diversion of Riverside Drive around the development to begin on January 27.