In recent years, a growing number of anonymous whistleblowers in Oslo have been instrumental in uncovering illegal rental practices. These informants operate under pseudonyms and use encrypted email accounts to relay tips regarding various rental violations to the authorities. As a result, several of Oslo's rental giants have faced significant operational restrictions, with businesses such as the rental corporation Vander being scrutinized closely following these anonymous reports.

The situation highlights a significant gap in the municipalities’ oversight tools for short-term rentals like those offered on platforms such as Airbnb. Without sufficient control mechanisms in place, the municipal authorities have relied heavily on these anonymous tips to initiate investigations into rental practices. The reliance on ideological activists’ reports indicates a shift in how the city’s enforcement policies are shaped, potentially demonstrating a bias towards issues presented by activist-driven concerns rather than direct municipal oversight.

The initial wave of complaints stemmed from neighborhood frustrations three years ago, as residents noticed an influx of unfamiliar faces in their buildings, disrupting the residential ambiance. What may have seemed like a harmless way to rent space through platforms such as Airbnb has turned into a source of significant concern for locals, leading to many questioning the integrity of residential zoning and rental laws in Oslo.