The city council said there had been several abusive incidents in recent months, and pairing up meant there was "immediate support".
In October last year, central government hiked fines nationwide by an average of 70% - something the council linked last month to a rise in pushback.
Council manager consenting and environment Jonathan Shaw said bad behaviour normally occurred during compliance action or fine enforcement.
"While officers are professional and experienced in dealing with challenging situations as part of their role, the team has noticed a rising trend of negative behaviour in recent months, including several abusive incidents," Mr Shaw said.
"In response to this, officers will sometimes work in pairs to ensure they have immediate support in the case of an incident."
Mr Shaw said no-one wanted to receive a ticket, but compliance was for the overall benefit of the community.
Officers were able to use radios and phones when out in the field, and body cameras had been used since 2020, he said.
Ticketing information provided by the council showed revenue had jumped 75% recently.
More than $1.14 million was collected from 16,504 infringements between October 2024 and June this year.
This compared with about $650,000 from 12,830 infringements for the corresponding period a year before.
As for fines, the government changes have bumped the minimum amount from $12 to $20 for overstaying.
The fines for those who overstay more than six hours have increased from $57 to $97.
• LDR is local body journalism co-funded by RNZ and NZ On Air.
