Construction and full-time catering jobs will stem from the first two phases of the massive makeover planned for the 102-year-old hotel and its world-famous golf course.
But Leisurecorp chief executive Alan Rogers, whose Dubai-based company takes over ownership from Starwood Hotels & Resorts Worldwide at the end of this month, said the potential benefits for the region would be far-reaching.
And he revealed that Leisurecorp – which owns 65 of the world's greatest hotels and 150 marinas – was involved in talks with South Ayrshire Council and Historic Scotland with regard to further investment.
A delighted Girvan Community Council chairman, Alec Clark, told the Gazette on Tuesday: "The magnitude of this investment in the local area has to be welcomed with open arms.
"The marketing alone will highlight the beauty of South Carrick and raise the tourist profile of the area immensely with spin off benefits for the whole area.
"The fact that the staff will become permanent is a major boost to the local economy and the employment market and the possibility of further local investment by Leisurecorp is the icing on the cake.
"In these turbulent financial times these are the types of investments that can only be dreamed about and at long last perhaps all in the community who work so hard can dare to dream of a local renaissance."
Added Carrick MSP Cathy Jamieson: "I'm delighted that the owners want to promote Turnberry as one of the best hotels in the world and a year-round attraction.
"Any investment in the Carrick economy is to be welcome and I hope it will secure local jobs for the future.
"Next year's Open Championship will help showcase Carrick as a great tourist destination and I hope that South Ayrshire Council will see this as an opportunity to bring further resources into the area."
The company's portfolio includes two key golf developments, Jumeirah Golf Estates in Dubai and Pearl Valley Golf Estates, South Africa, as well as stakes in businesses including Troon Golf, GPS Industries, Island Global Yachting and Snowmass Colorado.
Starwood, which bought Turnberry in December 1997, will continue to run the hotel and course under manager Stuart Selbie.
On Monday, he said the complex would be closed so that the first phase involving the hotel, lodges and Ailsa Craig course could be completed in time for next year's Open.
"With regard to the current economic climate, if there is such a thing as a good time to shut then this is it," said Mr Selbie.
He also revealed that, when reopened, the hotel's seasonal workers would from then on be employed on a year-round basis.
According to Mr Rogers, the reason behind the expenditure was to restore the palatial splendour of the former railway hotel and "ensure that Turnberry retained its place as the world's number one golf course".
"It is the most impressive golf course we will ever be able to acquire," he said.
Details of the huge facelift operation, masterminded by top interior designer Mary Fox Linton, were unveiled at a lavish launch party at Turnberry this week that spread over into nearby Culzean Castle.
Golfing writers were invited to play on the famous course that has already seen three Open Championships while leading European player Sergio Garcia dropped in by helicopter to promote the Race to Dubai tournament.
After a Press lunch on Monday, journalists were shown a 'mock up' of how the bedrooms might look – luxurious and updated but with a feel of the hotel's history and original conception by architect James Miller.