Inspections were carried out in November last year by the Ministry of Business, Innovation and Employment’s tenancy services compliance and investigation team, accompanied by staff from Queenstown’s council and Fire and Emergency New Zealand (Fenz).
Team national manager Steve Watson said the inspections were done "following concerns raised around overcrowding and living conditions in some properties".
However, when asked for the team’s report and whether any action was likely, Mr Watson said the investigation was open and he could not provide further information.
The boarding houses involved had both local and overseas occupants, one of which, a Huff St property, being a potential cause for concern.
The property was destroyed by fire just before inspections began.
"This property had been modified to accommodate more occupants than originally intended and on this occasion [Fenz] staff believed that it was very fortunate that this fire hadn’t resulted in a loss of life.
"This case highlights the additional risks tenants can face when living in an overcrowded environment."
Occupants at that address had a narrow escape from an early morning fire last September, which left the building badly damaged.
An Otago Daily Times report at the time said three people were treated in hospital.
The building was split into four different tenancies with two tenants and two guests in the unit where the fire was, four people in the neighbouring unit and two in a unit underneath.
A discarded cigarette was believed to have caused the fire.
A Fenz report found the property, owned by Conrad Goodger, had been modified to accommodate 28 people.
One unit had no smoke alarm and another had one that didn’t work.
Mr Watson said the team found "a number" of properties had been converted to allow more sleeping areas, raising concerns about a lack of facilities given the number of occupants.
"At the properties visited, electrical power points had been modified to support the large numbers of occupants, which raises further concerns around safety.
"Concerns about the appropriateness of some sleeping areas were also identified and continue to be assessed.
"These included caravans, vans, basements, garages and sleepouts."
The government agencies were "committed to working together" with landlords to address breaches of Acts designed to protect tenants, Mr Watson said.