8.2. Carports between 20 and 40 sqm in floor area – Chartered Professional Engineer

To use this exemption, a homeowner must have a Chartered Professional Engineer design or review any carport over 20m² and up to 40m², and the work must follow that design.
Legally required professional: Chartered Professional Engineer
Some suppliers offer pre-engineered kitsets already signed off by a Chartered Professional Engineer.
What the law says
Schedule 1 of the Building Act 2004
Exemption 44. Carports exceeding 20, but not exceeding 40, square metres in floor area
Building work in connection with a carport that:
(a) is on the ground level; and
(b) exceeds 20 square metres in floor area, but does not exceed 40 square metres.
This exemption also requires that the design of the building work has been carried out or reviewed by a Chartered Professional Engineer and the building work has been carried out in accordance with that design.
How it works
Before you begin, please read the Notes for carports: 8.1. to 8.3. (particularly District Plan requirements).
If using this exemption, a homeowner must engage a Chartered Professional Engineer to design a carport greater than 20 square metres and not exceeding 40 square metres and subsequently, the work must be carried out in accordance with that design. Some suppliers/manufacturers of proprietary products have pre-engineered kitsets with a unified sign-off from a Chartered Professional Engineer.
Find Chartered Professional Engineer - engineeringnz.org
If a homeowner intends to build a carport not exceeding 20 square metres on the ground floor, section 8.1 Carports not exceeding 20 square metres in floor area (exemption 18) of this document might be applicable. If the proposed carport is between 20 and 40 square metres, section 8.3 Carports exceeding 20 but not exceeding 40 square metres in floor area (exemption 18A) of this document may apply.
What is exempt
- A homeowner wants to construct a new free-standing carport. The carport will have a concrete slab on grade, be open on all sides, and have a net floor area of 30 square metres. The design is carried out (or reviewed) by a Chartered Professional Engineer and the work is carried out in accordance with that design.
- A homeowner wants to make an alteration to an existing 20 square metre carport by adding an extra 20 square metres so that the maximum size is 40 square metres. As long as the design is carried out or reviewed by a Chartered Professional Engineer and the work is carried out in accordance with that design.
What needs consent
- A homeowner wants to construct a new free-standing carport with a net floor area of 43 square metres which will be open on all sides. As it exceeds 40 square metres in net floor area, a building consent is required.
- A homeowner wants to make an alteration to an existing 20 square metre carport by adding an extra 30 square metres. This exceeds 40 square metres in net floor area, so a building consent is required.