Auckland, Wellington and Christchurch international airports are subject to a light-handed form of regulation called 'information disclosure.' This involves the Commission shining a light on the airport’s pricing and spending decisions to improve transparency about their performance.
The Commission does not regulate the prices Auckland, Wellington, and Christchurch International Airports charge. The airports may set prices as they see fit, but must consult with substantial customers, like airlines, on charges and any major capital expenditure plans.
Under Part 4 of the Commerce Act, which regulates markets with little or no competition, the three airports are subject to information disclosure regulation for certain key airport facilities and services to get people and cargo on and off aeroplanes, including take-off and landing of aircraft. These services include aircraft, freight, airfield, and passenger terminal activities. The regulation does not cover other services such as car parks and retail facilities.