13. Support structures
This section includes construction of both small and large retaining walls. For large retaining wall removal, please see section 1.
More details
This also includes small pipe supporting structures on private land for water only. The table below shows the exemptions included in this section and the professional you will need to hire.
| Description* | Is an authorised professional legally required? | Who can provide professional advice? | |
|---|---|---|---|
| 13.1 | Structures supporting water pipe | No | Chartered Professional Engineer |
| 13.2 | Retaining walls up to 1.5 metres depth of ground without surcharge | No | Licensed Building Practitioner or Chartered Professional Engineer |
| 13.3 | Retaining walls up to 3 metres depth of ground | Yes, for both construction and demolition | Chartered Professional Engineer |
*Owners must look at the relevant section of guidance to identify under which detailed conditions the building work qualifies for the exemption.