However, according to the report, the development would have major economic impacts for both the East Coast and the rest of the state.

The report was prepared by SGS Economics for the proponents, Cambria Green Agriculture and Tourism Management.

The Cambria Green development has been a contentious issue for Tasmanians since its first introduction at a Glamorgan Spring Bay Council meeting in April 2018.

The development would attract affluent tourists from overseas and across Australia.

A planning scheme amendment for the development is in for a decision with the Tasmanian Planning Commission. If approved, construction would commence in 2020 and would be completed by 2025.

The project would be funded by foreign investors.

According to the report, the high-end nature of the services provided would mean operating costs would also be high - about $50 million per annum.

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Rooms would cost upward of $600 per night.

The development would generate a range of benefits for Dolphin Sands and Swansea, including visitor and resident spending, skill development, improved business confidence, and population increase, the report said.

"Because the resort targets an underdeveloped tourism market segment, the majority of the visitor spending is additional to existing tourism spending," it said.

"It will generate flow-on spending in the local community of Swansea, rather than competition with existing operators."

The report said once fully operational, the development would increase visitor spending on the East Coast by up to $39 million.

This would include transport, guided tours, food, beverages, and other tourism related spending.

It was also expected there would be increased spending on tourism related industries including retail, transport hire, fuel, tour operator services, sport and recreation, cultural services including local art and crafts, also clubs, pubs, taverns and bars, and restaurants, cafes and takeaway food services.

The document is available for viewing here.