The ambitious plans will more than treble the accommodation space in the building and, importantly, allow female members of the Royal & Ancient Golf Club of St Andrews to access facilities within it.
It wasn't until September 2014 that women were first allowed to join the club. At present, they make use of a locker room at the nearby Forgan House.
The blueprint for the changes are based on a basement level extension to the north and south that will require excavating the ground beneath the existing car park. It is thought that these plans will better position the property to cope with hosting top-level golf tournaments, not least the Open Championship, which is due to return to St Andrews in 2022.
"In a review of existing R&A clubhouse facilities offered for the use of members, it has been concluded that the existing golfing facilities need to be reconsidered to improve their nature and extent," said an R&A spokesperson. "It is considered imperative that all members, including women members, can use golfing facilities located within the clubhouse."