Not sure what a residential court is. However it is in your best interest to ensure it is not hidden by bushes / trees or any other object for that matter. This also goes for the hydrant indicator usually a post with the marking of HR or HP may even be a cats eye. Mind you these markers could be on poles / fences etc, except the cats eye.
If a residential court is like a secured estate (gated community) the maintenance is I dare say the Body Corp responsibility and again its in your best interest to ensure these are maintained throughout the estate.
Gated communities are usually private and thus hydrants do not show on water maps for the fire service so time could be lost in an emergency in finding a hydrant.
Not many people like hydrants in thier footpath, driveway or garden its funny how this can change in an emergency.
Brian