just want to check and verify with other condo owners since this is my first time buying a condo. Is it normal to collect deposits for maintenance, sinking fund, and also common area meter (water and electric)?

the amount for the common area deposits are quite high and it doesn't make sense to me when you consider the amount of owners / residents. The condo is commercial title under HDA

developer is not being helpful so far in answering our questions so would like to get some opinions here