Listen my Pakistani friend, you questioned Durga Pooja along with RSS shakha that's why I answered it.
IMO permission should be taken for event to be held at public places wether it's your religious practice of offering Namaz or Shanghis RSS gathering.
Don't know about RSS shakha as there is none in my area, and for Durga Pooja RWAs take all the necessary permission required be it from fire department, sdm office etc along with this they also deposit rent .