The Numbers Behind Perth's Duplicate Image Problem: What the Data Reveals

Perth's public sector and property industry are sitting on a growing backlog of duplicate digital images, with analysts tracking the problem across government content management systems, real estate listing portals and council websites statewide. The volume of redundant image files stored across Western Australian government servers has expanded sharply alongside the Metronet rail expansion project's communications rollout and the state's ongoing AUKUS-related infrastructure announcements — both of which have generated thousands of press-release photographs, render images and site documentation files since 2023.

The issue landed back in focus this week after the WA Department of Finance updated its Digital Asset Management guidelines on July 1, flagging storage inefficiency as a priority audit item for the 2026-27 financial year. That timing matters. With the state budget carrying a surplus and agencies under pressure to demonstrate value-for-money in digital infrastructure spending, duplicate image replacement — long treated as a housekeeping footnote — has become a line item that senior bureaucrats can no longer ignore.

What the Numbers Actually Show

Industry benchmarks from the Content Management Institute's 2025 Digital Waste Report found that large government and real estate organisations typically carry duplicate image rates of between 18 and 34 percent across their primary digital asset repositories. Applied to Western Australia's context, where the Department of Planning, Lands and Heritage alone manages tens of thousands of cadastral and site images tied to Perth's housing approvals pipeline, even the lower end of that range represents a substantial drag on storage costs and workflow efficiency.

Real estate is where the duplication problem is most visible to ordinary Perth residents. The Real Estate Institute of Western Australia reported earlier this year that suburban listing activity across corridors including Cannington, Joondalup and the inner-northern suburbs around Scarborough had hit multi-year highs. Each listing typically generates between 15 and 40 professional photographs. When listings are withdrawn, relisted, or transferred between agencies on platforms such as realestate.com.au and domain.com.au, image sets are frequently re-uploaded rather than replaced, creating duplicate records that slow page-load times and inflate server costs. A single mid-tier suburban property in, say, the Stirling local government area might have three or four duplicate image sets sitting in a portal's backend from successive listings over 18 months.

Storage costs are not trivial. Enterprise cloud storage in Australia currently runs at roughly $0.023 per gigabyte per month on standard tiers with providers such as Amazon Web Services and Microsoft Azure. For organisations managing image libraries in the hundreds of thousands of files, unaddressed duplication can inflate storage bills by thousands of dollars annually — before factoring in the staff hours required to manually sort, tag and retrieve the correct master files during deadline-driven publication cycles.

Perth Organisations Moving to Fix It

The City of Perth, which manages digital assets across its cultural venues including the Perth Concert Hall on St Georges Terrace and the Council House precinct on Hay Street, began a structured digital asset audit in March 2026 as part of its broader ICT modernisation program. The audit scope includes image deduplication using hash-matching software — a technique that compares file fingerprints rather than filenames to identify true duplicates regardless of what they have been labelled.

Landgate, the state's land information authority based in Midland, has publicly outlined plans to migrate its spatial imagery holdings to a consolidated repository as part of a multi-year data reform program. Spatial and cadastral photography is among the most heavily duplicated categories in government systems, because the same aerial and site images are requested and stored independently by multiple agencies.

For smaller organisations — a Subiaco architecture firm, a Fremantle tourism operator, a Joondalup council communications team — the practical starting point is an audit using free or low-cost tools such as dupeGuru or the deduplication modules built into platforms like Bynder or Brandfolder. Running an audit before the end of the financial year on July 30 gives organisations a clean baseline for the 2026-27 digital budget cycle and positions them to claim any efficiency savings before the next round of agency reporting in October.

The state's digital spend is under more scrutiny than at any point in recent memory. Agencies that can demonstrate measurable reductions in storage waste will have a concrete data point to bring to the next Treasury review — and right now, concrete data points are exactly what the surplus conversation demands.