canonical erection of monastery
The general requirements for the canonical erection of a monastery, whether of regulars or moniales, apart from the requirements of the Order's constitutions, are:
(1) permission of the Holy See, i.e., of the Congregation of Religious
(2) permission in writing of the Ordinary of the place
(3) sufficient provision for the housing and sustenance of the community
That this monastery be a domus formata, it is required that at least six members of the community be professed, of whom four at least must be priests, if the Order is clerical.
This general legislation does not affect the special privileges enjoyed by any religious order.
New Catholic Dictionary