Must comply with Schedule 1 of the General Regulation.

External door, wall and window alterations don’t need BA if:

  • it's for a class 1, class 2 or class 10 building only
  • the building has a certificate of occupancy or other certificate under the Building Act 2004
  • the largest horizontal opening span is 2m, and
  • it follows all other general rules.

Also see: external doors and windows DA exemptions.