How Istanbul's Historic Streetscapes Became a Battlefield Over Duplicate and Replacement Images

Istanbul's urban planning offices have quietly wrestled for years with a problem that sounds mundane until you understand what is actually at stake: thousands of duplicate and low-resolution images embedded in official planning documents, heritage surveys, and municipal databases that were substituted for original photographic records — and how that substitution is now distorting decisions about some of the city's most sensitive development zones.

The issue came into sharper focus this spring when the Istanbul Metropolitan Municipality's directorate for urban transformation began a formal audit of its digital archive, which covers everything from Fatih's Byzantine-era street grids to the contested shoreline parcels along the Golden Horn. Planners found that a significant portion of the photographic evidence used in heritage impact assessments had been replaced at some point with stock or duplicated images — some pulled from generic construction databases — rather than site-specific photography. The original files, in several cases, had been deleted or were stored on legacy systems incompatible with current software.

How the Problem Took Root

The roots go back to the early 2010s, when Turkish municipalities were under pressure to digitise paper planning records rapidly. Istanbul's districts were migrating physical dossiers onto centralised servers, and the process was neither uniform nor well-supervised. Low-bandwidth connections between district offices — particularly in Eyüpsultan and Gaziosmanpaşa, both areas with dense informal housing stock — meant that large image files were often compressed, downgraded, or replaced entirely with placeholder images to ease server load. Nobody flagged the substitutions at the time because the priority was getting the documents online, not verifying their visual fidelity.

The 2023 Kahramanmaraş earthquakes accelerated the problem. After February of that year, Istanbul's planning apparatus was flooded with demands for rapid seismic risk assessments across hundreds of older neighbourhoods. The Bağcılar and Zeytinburnu districts, both flagged as high-risk zones in earlier surveys, saw a surge in building inspection filings. Consultants working under tight deadlines sometimes inserted images from previous assessments — or from entirely different buildings — rather than commission fresh photography. A municipal review circulated internally this past April identified at least three separate Zeytinburnu assessment files in which the structural photographs attached to the report did not correspond to the address listed on the cover sheet.

What Happens When the Image Lies

The practical consequences are significant. Heritage boards at the Istanbul Archaeological Museums complex on Osman Hamdi Bey Sokağı rely heavily on photographic documentation when ruling on demolition or restoration applications in protected zones. If the images on file misrepresent a building's current state, the board may approve — or deny — intervention based on outdated or incorrect visual evidence. At least two contested cases in the Süleymaniye neighbourhood are currently stalled, partly because the documentation submitted by applicants and the images already held by the municipality do not match.

The Council of State, Turkey's highest administrative court, ruled in a 2021 case involving a protected structure in Trabzon that municipalities bear legal responsibility for the accuracy of digital records used in heritage proceedings. That ruling has given Istanbul's opposition-led municipality additional legal exposure as the audit progresses — and additional political cover to pursue the cleanup aggressively, given the ongoing friction between the CHP-run city hall and the central government over planning authority.

The municipality has announced a tender process for a new image verification and archiving platform, with a submission deadline of September 15, 2026. The system would use hash-based file verification to flag duplicate images automatically and require georeferenced metadata for all photographs uploaded to planning files going forward. Heritage NGO Çekül Vakfı, which has long monitored documentation quality in Istanbul's protected areas, has publicly supported the initiative, though the scale of the backlog — estimated internally at more than 200,000 files requiring manual review — means the full cleanup will take years, not months. Residents and property owners with active applications in districts like Balat or Fener would be wise to request a copy of the photographic record currently attached to their files and verify it matches the physical reality of their buildings before any hearing proceeds.