Restricted building work is work that’s critical to make a home structurally sound and weather tight.
You must use licensed building practitioners (LBPs) to design and carry out this work. LBPs must either do or supervise the work.
Building work that is in the restricted building work category must only be done by or under the supervision of an LBP, unless you are using the owner-builder exemption. (external link)
Your application for building consent must include a Memorandum (Certificate of Design Work)(external link).