The Department of Conservation says almost a quarter of tourism operators surveyed in the western South Island were found to be breaching conditions or operating illegally.
About $300,000 was spent to check 3500 permits' compliance in the southern and western regions of the South Island from October until April, reports Radio NZ.
One in four checked had breached their conditions or were operating illegally.
Tourism activities in South Westland, Central Otago, Wakatipu and Fiordland were all checked during the campaign.
In Fiordland, 2445 activities were checked. Almost 80 percent of the activities are related to parking, with almost all the rest relating to permits for guiding.