Perth's Duplicate Image Problem: How the City Stacks Up Against Singapore, Amsterdam and Vancouver

Perth has a duplicate image problem — and the people responsible for managing the city's visual identity are only now catching up with it. Across municipal databases, tourism platforms, planning portals and heritage registers, the same photographs of landmarks appear filed under different names, different dates and different licensing conditions, creating legal grey zones that are costing agencies time and, in some cases, money.

The issue has surfaced sharply in 2026 as the WA Department of Planning, Lands and Heritage accelerated its digital asset consolidation program ahead of expanded Metronet corridor documentation requirements. When multiple agencies photograph the same junction — say, the intersection of William Street and Francis Street in Northbridge, or the Fremantle Ports grain terminal — those images can end up catalogued dozens of times across separate government systems, each instance carrying different metadata and sometimes conflicting copyright tags.

What Perth Is Doing — and What It Isn't

The City of Perth and the City of Fremantle both maintain independent visual asset libraries. Neither council, according to publicly available procurement records updated in the 2025-26 financial year, has yet moved to a unified deduplication standard shared with state-level agencies. The City of Vincent, which covers Northbridge and Mount Lawley, uses a third separate content management system for its planning and community engagement imagery.

Compare that to Singapore, where the Urban Redevelopment Authority centralised its municipal image repository in 2021 under a single licensing framework, reducing redundant files by a reported 40 percent across partner agencies within 18 months. Amsterdam's City Archives — the Stadsarchief Amsterdam — completed a similar deduplication exercise in 2023, tagging roughly 900,000 digitised images with standardised Creative Commons licensing. Vancouver's city planning department adopted automated hash-matching software in 2022 to flag near-duplicate photographs before they entered the municipal record.

Perth has not yet adopted any equivalent automated approach at the municipal level, though the State Records Office of Western Australia has issued guidance — most recently updated in 2024 — on best practice for digital asset management. That guidance does not mandate deduplication protocols.

Why It Matters More Now

The timing matters. The AUKUS defence build-up around HMAS Stirling at Garden Island has triggered a wave of infrastructure documentation, with contractors, federal agencies and state bodies each independently photographing the same coastal corridors, road upgrades and utility corridors along Rockingham Road and the Kwinana Freeway interchanges. Each set of images enters a different filing system. Legal officers at more than one infrastructure body have privately flagged — without being named, given their agencies have not authorised public comment — that resolving copyright disputes over duplicated contractor images has added administrative costs to at least three major project files in the past 18 months.

The housing surge is adding pressure too. Planning applications in Perth's inner suburbs have risen substantially since 2023, driven by population growth linked to immigration and resource-sector expansion. Each application requires photographic documentation of the site and streetscape. The City of Stirling alone processed more than 8,500 development applications in 2024-25, according to figures published in its annual report. When the same Scarborough or Balcatta streetscape appears in dozens of separate applications, each photographed independently, the duplication compounds fast.

The practical answer is not glamorous: hash-based deduplication software, used routinely by news archives and commercial photo libraries, can identify visually identical or near-identical images in seconds. The cost of commercial enterprise licences for such tools runs from roughly $15,000 to $80,000 annually depending on scale — well within reach of agencies whose legal exposure from mismanaged image rights can run far higher.

What happens next depends largely on whether the WA government treats this as a state-level coordination problem or leaves individual councils and agencies to solve it piecemeal. Singapore and Amsterdam chose the former. Vancouver moved at the city level alone. Perth, with its fragmented three-tier municipal structure across 30 separate local government areas, may find neither approach fits cleanly — which means the duplicate files will keep multiplying until someone decides the problem is large enough to fix.