town planner and architect

Hi all



Hope everyone is well.



I have previously worked with an architect who did the townplanning as well.



I am looking to more in a different direction and wish to use a new architect, which will mean that I will have to use a new town planner.



Can someone explain to me how this works - do architects know generally what will be permitted on a site and do draft drawings which are then checked by the town planner, or do you prepare a brief for an architect which has a complete town planning report or is there some other way it usually works?



I am only looking at a small job - retaining a house and building two townhouses out the back - it will largely be generally in accordance with the code.



Any comments welcome.



Thanks



Ben

town planner and architect