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

Perth organisations are sitting on enormous libraries of duplicated digital images, and the bill for storing, managing and legally clearing that redundant content is climbing. Across the property sector, state government agencies and local media operations, analysts who work in digital asset management estimate that duplicate or near-duplicate images can account for anywhere between 30 and 60 per cent of total image inventories — a drag on storage budgets and a compliance headache that has sharpened as WA's economy has boomed.

The issue lands at a particular moment. With Metronet construction photography, AUKUS-related infrastructure documentation around HMAS Stirling on Garden Island, and a housing market that saw Perth record the strongest price growth of any Australian capital in 2024 and 2025, the volume of images flowing through WA's public and private sector has grown dramatically. Every new development in Alkimos, every groundbreaking at Henderson, every ministerial visit to the Forrestfield-Airport Link stations generates new photography — and with it, new duplication risk.

What the Storage Costs Look Like

Enterprise cloud storage is not free. Organisations using platforms such as Microsoft Azure or AWS typically pay between $0.02 and $0.05 per gigabyte per month for standard-tier storage in Australian data centres. A mid-sized WA government agency running a digital asset library of, say, 500,000 images — not unusual for a department involved in major infrastructure or tourism — can expect raw storage costs that climb into five figures annually before factoring in bandwidth, backup redundancy and licensing management overhead.

The duplication problem compounds that figure. When the same image exists in three or four versions across different folders, different departments or different campaign libraries, every downstream action — rights checks, metadata updates, archival transfers — gets multiplied. For an organisation like the City of Perth or Landgate, which manages spatial and photographic records across the entire state, the operational cost of unmanaged duplication is not trivial. Digital records consultants who work with WA local governments describe remediation projects — the process of deduplicating and recataloguing image libraries — as routinely running to hundreds of hours of labour.

The legal dimension adds another layer of exposure. Under Australian copyright law, an organisation that unknowingly republishes a third-party image — even one that has sat in its own archive for years after the original licence expired — faces infringement liability. The Australian Copyright Council notes that licence terms are tied to specific uses and timeframes, meaning a photograph shot for a 2019 Scarborough Beach redevelopment brochure cannot simply be recycled for a 2026 campaign without fresh clearance. Duplicate images, by their nature, are harder to track back to their original rights documentation.

The Perth-Specific Pressure Points

Three sectors are driving the local surge. First, residential property: Perth's median house price crossed $800,000 earlier this year, and with transaction volumes elevated, real estate agencies on the strip between Cottesloe and Claremont are generating thousands of new property images weekly. Each listing typically produces 20 to 40 photographs, and when properties are relisted or campaigns are refreshed, older images frequently re-enter the system unlabelled.

Second, infrastructure documentation. The Public Transport Authority's Metronet program spans multiple active construction corridors, from Yanchep in the north to Byford in the south. Progress photography for those corridors feeds into ministerial briefings, community updates, tender documents and social media — each channel drawing from shared but poorly governed image pools.

Third, defence. The expansion of Stirling Naval Base and the early groundwork around AUKUS submarine infrastructure has brought new contractors, new communications teams and new image libraries into the WA ecosystem, often operating under different classification and retention rules to civilian agencies.

The practical response for any organisation is a phased audit. Digital asset managers recommend starting with a hash-based duplicate detection sweep — software tools can identify pixel-identical images within hours — before moving to perceptual hashing, which catches near-duplicates such as cropped or colour-adjusted versions of the same shot. Organisations that have completed that process typically report deleting between 20 and 40 per cent of their stored image inventory in the first pass. For a department spending $50,000 a year on digital storage, that is a meaningful number.