Can we alter the ‘no-laundry by-law’

I live in a block of 18 units and would like to hang washing on a balcony unobservable from other units in the block but neighbours across the street (who also hang their washing out) can see it.

With energy prices on the up and up why should we have to use driers?

Is there a way to change a by-law that prevents hanging washing on balconies?