Building work at the famous golf centre could start early next year creating 160 construction jobs.
Plans include an extra 144 guest-rooms in a new building on the site overlooking the world-famous Brabazon Course alongside a 600-seat ballroom and banqueting facility.
A leisure club, next to the 18th hole of the PGA National Course, is also in the plans.
This will feature a family-orientated leisure pool as well as a gym and studio rooms, café and changing facilities.
Relocation of the existing leisure facilities will allow space within the existing resort buildings for a new spa.
The Belfry has appointed national planning and development consultancy Lichfields to take forward the proposals.
In 2017 Lichfields secured planning permission for a similar scheme and say the new, amended proposals, place greater emphasis on the resort’s golfing tradition.
The venue near Sutton Coldfield has hosted four Ryder Cups on its Brabazon course.
Ian Kettlewell, Planning Director at Lichfields said: “The Belfry want to build upon the resort’s golfing tradition and success so that it continues to operate as a world class golf and leisure destination into the future.
“The new guest rooms will face onto the 10th hole of the world-famous Brabazon Course and feature private balconies giving open views across the golf course and resort.
“The ballroom will be connected to the new guest rooms by a two storey arrival space and will also face onto the Brabazon course.”
A planning application is due to be submitted to North Warwickshire Borough Council in the summer and construction could start early next year.