A former gym and spa in St Saviour will be turned into a nursery for up to 70 children.
Guardian Nursing Services Ltd has been given planning permission to open a Busy Beans at Chateau Vermont on Mont Sohier.
There is already one at Bel Royal.
Approval was given despite concerns from neighbours out traffic issues.
The application said it would use the surrounding woodland for a forest school.
"There is a demand for the establishment of a new use of this kind within the countryside i.e in a rural location, including a 'tie-in' to the surrounding forest and the establishment of the nursery forest school, in this part of the island."
Greenhouse Spa and Gym closed last February.
Chateau Vermont, which is close to Five Oaks, is home to the Jersey Academy of Music and is available to hire for weddings and private events.
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