The Council would need at least 20 inspectors this year to keep up with growth, however, Fahrenson said realistically they would need more.
"We're in the same boat as the rest of the building industry, we're struggling to find good people out there," he said.
Despite a shortage of staff, he said inspection delays had not been a problem so far.
"Over the last six months there have been periods where we have gone more than a few days, but it is generally short-lived as we move resources around the city to wherever we have those hot-spots or bubbles."
A high turnover of staff and a booming construction industry has contributed to the shortage.
Thirty qualified building inspectors are required by next year.
- with additional reporting from Newstalk ZB.