Building Act 1996 stipulates that all building work requires a building permit, unless the work is specifically exempted under the Regulations. A building permit is written approval from a registered building surveyor certifying that your plans comply with the Building Regulations. You must have this permit before any work can begin. The same rules apply to alterations, demolitions and removals. The link below provides you with only a general guide as to when a building permit is required, we recommend that you contact the Building Department Telephone 03 5522 2216 for confirmation.