Can a Co-operative Housing Society be formed if the builder refuses to co-operate ? Yes it can be formed according to Section 10 of the Maharashtra Ownership flats (Regulations of the Provisions of Construction Sale, Management and Transfer) Act makes it obligatory on Promoter / Builder to submit proposal for registration of a Co-operative Housing Society, within a period of four months from the date on which the minimum number of members required to form such a society have purchased the flats, a Co-operative Society can be formed even if the builder does not co-operative. In such a situation a notice should be issued to the builder. A copy of such notice has also to be sent to the Dy.Registrar / Asstt. Registrar of the concerned ward with a request to call upon the builder to explain his stand on the above and matter. The minimum number of members required to form a Co-operative Society is ten. However societies can be formed with less than ten members after obtaining the permission from the Competent Authority.