im the former of majlis bandaran staff,

normally each area are different rules & regulations.

for example at majlis perbandaran sepang, if u want to install grille for window @ door, must apply the permit but some of majlis no need to do this.

btw, if internal renovation unless u have @ using RORO BIN, or construction materials like sand @ cement, bricks or others and the contractors put outside the house, u must get the permit as "permit meletak bahan binaan" & " permit meletak tong sampah".

for external @ boundary @ structural (beams, column, slab, staircase) renovation, must be to apply at majlis.

otherwise, sometimes have a neighbour tell @ call the majlis if your renovation disturbing their area.

my advice, go to your own majlis area & makesure what do u want to renovation. thats important to prevent any majlis from "kacau-kacau" @ neighbors from "bising-bising"

for any apartment, flat @ condo owners, no need to apply under majlis, just go to your management apartment, flat @ condo.