Does every unit have their own power point in the common laundry? If so there may well be a switch on your fuse box, often located in your unit.
Look for a switch that is labelled ‘laundry’ or something similar and turn it off. Have one person in the laundry with an appliance plugged in and see if it loses power. If so then all good.
If there are no individual switches then it’s owner’s corporation power and the committee gets to deal the cost.