The plans for the project are on display from tomorrow until July 2, with residents able to make submissions to the council.

The plans for the multi-use complex, which when completed will include facilities such as a city library, museum, cafe and the council's administrative offices, have undergone changes since they were last made available to the public.

Notable changes to the plans include increasing the size of the civic square at the front of the complex to 2000 square metres, removing the green roof/viewing platform from the roof for safety reasons, integrating the museum and cafe into the library to provide a focal point for community interaction and there are now two levels of basement parking, enabling all parking to be contained on- site.

The 350-seat auditorium has been centralised in the building, while staff recreation facilities have been consolidated into a single multi-purpose room at the basement level.

An independent consultant will prepare an assessment report on the DA, which has to be considered by the Joint Regional Planning Panel before construction can start.

Shellharbour Mayor Marianne Saliba said she was happy to see the project taking the next step and encouraged people to familiarise themselves with the plans.

"This project has been many years in the planning, and I'm delighted it has now moved to this important stage," Cr Saliba said.

"I invite residents, business owners and visitors to take the time to look at the documents and see for themselves the extensive facilities this complex will bring to our local government area."

The DA can be viewed on the council's website and at the council's administration centre.

Submissions can be made until July 2 by email to records@shellharbour.nsw.gov.au and by mail to: The General Manager, Shellharbour City Council, Locked Bag 155, Shellharbour City Centre, NSW, 2529.