How Zurich's Property Listings Ended Up Flooded With Duplicate Photos — And Why Fixing It Took So Long

Zurich's housing market is tight enough that renters have been known to queue around the block on Langstrasse for a viewing of a modest two-room flat. Now a separate, less visible problem has been drawing scrutiny from consumer advocates and platform operators alike: the widespread recycling of property photographs across multiple listings, sometimes for units in entirely different buildings or neighbourhoods.

The practice — known in the industry as duplicate image placement — is not new. But pressure to address it has reached a tipping point in mid-2026, driven by a combination of regulatory nudges from the Swiss Competition Commission (WEKO), complaints logged through the city's official tenant advisory service Mieterinnen- und Mieterverband Zürich, and a broader reckoning inside the country's two dominant listing platforms, Homegate and ImmoScout24.

How the Problem Took Root

The roots go back roughly a decade, to a period when Zurich's vacancy rate fell below one percent and stayed there. With demand so far outstripping supply, landlords and property management companies — particularly the mid-sized firms operating portfolios across Wiedikon, Altstetten, and Oerlikon — discovered they could fill units quickly regardless of listing quality. Investing in fresh photography for every unit felt unnecessary. Generic corridor shots, stock-style kitchen images, and photographs recycled from a previous tenant's listing became standard practice at scores of agencies.

At the same time, both major platforms operated largely on an honour system. Automated duplicate-detection tools existed but were applied inconsistently, and the business incentive to challenge paying landlord clients was limited. The Zurich cantonal housing office flagged the issue in correspondence as early as 2022, but enforcement powers at the platform level remained undefined.

The vacancy rate in the city of Zurich stood at 0.07 percent as of the most recent cantonal statistics, one of the lowest figures ever recorded. That number, published by the Statistisches Amt des Kantons Zürich, explains why renters rarely had leverage to complain: if you balked at a listing with obviously recycled photos, someone else would take the flat by end of day.

What Changed — and What Comes Next

The shift began accelerating in late 2025, when WEKO opened a preliminary review into transparency standards across Swiss online property platforms. The review did not single out any company by name, but both Homegate and ImmoScout24 subsequently announced updated image-verification policies, with Homegate setting a public implementation deadline of the first quarter of 2026. Industry observers noted the timing was unlikely to be coincidental.

Mieterinnen- und Mieterverband Zürich, which operates a walk-in advice centre near Sihlcity, reported a measurable uptick in complaints related to misleading listing images during 2024 and 2025 — a period when the organisation also expanded its digital helpdesk to handle online submissions from renters across the canton.

The technical fix itself is not particularly complex. Perceptual hashing — a method that generates a digital fingerprint for each uploaded image and flags near-identical duplicates — has been commercially available for years and is used routinely by platforms in Berlin and Amsterdam. The barrier in Zurich was less technological than institutional: nobody owned the problem clearly, and nobody had sufficient incentive to act until regulatory attention arrived.

For renters navigating the market right now, the practical advice from housing advocates is straightforward. Use reverse image search on any listing photo before committing to a viewing fee. Cross-reference addresses on both Homegate and ImmoScout24, since the same management company often posts to both. And if a listing for a flat on Badenerstrasse shows a view that looks implausibly like it belongs to a Seefeld penthouse, trust that instinct.

Platform-level changes will take time to reach every corner of the market. The smaller, independent management firms that operate one or two residential buildings in Höngg or Schwamendingen are the slowest to update their practices, and enforcement against them remains patchy. But the structural conversation has finally started — prodded along, as with so much in Swiss public life, by the slow machinery of formal process arriving, eventually, at the right question.