In New Zealand, the requirements for permits and codes for retaining walls may vary depending on the specific circumstances and local regulations. However, in general, it is advisable to check with your local city or district council to determine if a permit is required for your specific retaining wall project. The council will be able to provide you with information on any specific codes or regulations that need to be followed.
In Auckland, the regulations regarding retaining walls are covered by the Auckland Unitary Plan. The plan sets out rules and requirements for various aspects of construction, including retaining walls. The specific requirements may depend on factors such as the height and location of the retaining wall. It is important to consult the Auckland Council or visit their website to obtain the most up-to-date information on the requirements and permits for retaining walls in Auckland.
It is always recommended to seek professional advice from a qualified engineer or building professional when planning and constructing a retaining wall. They can help ensure that the wall is designed and built to meet the necessary safety standards and comply with local regulations.