Kusalic also accused the county head of exerting pressure on the project's investors and of continuously changing the zoning plans.
He told a news conference in Zagreb that those in charge of the EUR 1.2 billion project were faced with impossible conditions and terms.
Kusalic said that all of this reflected an anti-entrepreneurial climate.
He said that the project included the construction of an 18-hole golf course and a nine-hole golf course with amenities as well as the reconstruction of the "Imperial" castle which he said would be of great benefit to the City of Dubrovnik and the Dubrovnik-Neretva county.
Kusalic said he was waiting for answers from Construction Minister Branko Bacic and Deputy Prime Minister in charge of investments, Ivan Domagoj Milosevic, whom he previously contacted.
Ahead of Kusalic's news conference held in a Zagreb hotel, environmental activists gathered outside the hotel to inform reporters that that project was actually a disguised attempt to transform Srdj Hill into a built-up area.
Two activists said the project was not about the golf-course construction but the construction of a condominium complex at the farmland and forest-land.
They described Kusalic's press conference as an attempt to exert pressure on the authorities to issue permits for the project.