Istanbul's Duplicate Image Problem: What Officials, Experts and Key Figures Are Saying

A growing number of urban planners, heritage preservation officers and digital archivists working across Istanbul are raising alarms about the widespread use of duplicate and replacement imagery in municipal databases, property records and tourism portals — a technical failure with real consequences for how the city plans, protects and presents itself to the world.

The issue, which specialists have been flagging for at least two years, has moved closer to institutional attention as Istanbul Metropolitan Municipality's urban transformation directorate — working on earthquake-resilience upgrades across high-risk districts — discovered that multiple buildings in the Fatih and Zeytinburnu districts appeared in planning documents under duplicate photographs, sometimes showing entirely different structures. With the legacy of the February 2023 Kahramanmaraş earthquakes still shaping every conversation about building safety in Turkey, the reliability of photographic documentation is no longer a bureaucratic footnote.

Why the Stakes Are Higher Than They Look

Turkey's Cultural and Natural Heritage Protection Boards, which operate under the Ministry of Culture and Tourism, require visual documentation as part of any application to list, modify or demolish a structure. When duplicate images enter that pipeline — whether through careless database management, vendor error, or deliberate substitution — the downstream effect can mean a historically significant building in Balat or Zeyrek is assessed against photographs of a different property entirely.

Archivists at the Istanbul Archaeological Museums, located in the Gülhane park complex in Eminönü, have flagged similar problems in their own digital cataloguing systems. The museum holds one of the largest collections of Ottoman-era architectural surveys in the region. Staff there have been working since early 2025 to audit image metadata across approximately 40,000 digitised records, a project that has reportedly uncovered several hundred cases where scanned images were assigned to the wrong file entries during a bulk digitisation push contracted out in 2022.

Academics at Istanbul Technical University's Faculty of Architecture in Taşkışla have written about the broader implications for urban governance. The core argument, repeated across conference papers and professional forums, is that Istanbul's rapid expansion of digital planning tools — accelerated by post-earthquake policy pressure — outpaced the quality-control frameworks needed to keep those tools trustworthy. Without image verification protocols built into the workflow, duplication errors compound.

Practical Pressure and What Comes Next

The problem also has a commercial dimension. Real estate listings across platforms operating in Istanbul — including properties in high-turnover rental zones like Beyoğlu and Şişli — have long been cited by the Emlak Konut GYO state housing enterprise and independent property lawyers as a source of consumer disputes, with duplicate or swapped listing photographs contributing to misrepresentation complaints. Istanbul's consumer arbitration committees recorded more than 1,200 property-related complaints in the first quarter of 2026 alone, according to figures cited in trade press, though the precise share attributable to image duplication is not publicly broken down.

Responses from officials and experts point in a consistent direction: the fix requires both technical and institutional action. Urban planning professionals speaking at a symposium hosted by the Chamber of Architects Turkey — whose Istanbul branch office is on Karaköy Meydanı — have called for mandatory hash-verification checks on all images submitted to municipal planning portals, a standard already common in archival practice in Germany and Japan but not yet codified in Turkish administrative law.

The Metropolitan Municipality has not issued a formal public statement on the scale of the problem, but its information technology procurement tenders published on the Public Procurement Authority platform in May 2026 included specifications for image-deduplication software for at least two internal databases. That signals official acknowledgment, even without a press conference attached to it.

For residents and property owners, the immediate practical advice from lawyers and architects is straightforward: any documentation submitted to a planning or heritage body should include photographs with embedded GPS metadata and timestamps, and applicants should retain original image files rather than relying on portal uploads that may be compressed or re-indexed. The Fatih district planning office has reportedly begun advising applicants of this verbally at the submission counter, though no formal written guidance has been published as of July 4, 2026.