Section 102(2) in The Delhi Co-operative Societies Rules, 2007
(2)The general body while framing regulations for maintenance of essential services including mandatory green area in the co-operative housing society shall have to take into account the common areas, common facilities and the services which are rendered to the members and the residents by the co-operative housing society. The regulations shall have to spell out the basis of fixing up of the charges for the maintenance of essential services specially in such complexes, where area of dwelling units and number of storey of flats differ in sizes. Further, where lifts are installed in building charges for its use and maintenance shall have to be paid by all members and residents in spite of the fact whether the particular member or resident is staying at any floor of the building. The general body may fix higher charges of essential services in respect of dwelling units which are on rent and in possession of tenants.