Perth's Duplicate Image Problem: The Numbers Driving a City-Wide Digital Reckoning

Perth's government agencies, councils, and major infrastructure programs are carrying an estimated tens of thousands of duplicate digital images across their records systems — a problem that is costing real money in storage, slowing down Freedom of Information requests, and quietly undermining the integrity of public asset registers. The scale only became apparent as agencies began auditing their holdings ahead of the WA Government's 2026-27 procurement cycle for cloud storage contracts.

The timing matters. Western Australia is mid-way through the most ambitious capital works program in its history. Metronet alone has generated documentation across more than a dozen active project corridors, from Yanchep in the north to Thornlie-Cockburn in the south. Each project produces thousands of site photographs, engineering images, and progress records — and without systematic deduplication protocols, the same image routinely ends up filed under multiple project codes, saved by multiple contractors, and backed up across multiple servers.

What the Numbers Actually Show

Industry benchmarks from digital asset management firms operating in the Australian government sector suggest that between 30 and 40 per cent of images held in large infrastructure project repositories are duplicates or near-duplicates. Apply that to a program the size of Metronet — which the WA Government has publicly valued at more than $10 billion across all stages — and the volume of redundant files becomes substantial. Cloud storage in Australian government-grade environments typically runs at between $0.02 and $0.05 per gigabyte per month for compliant cold storage tiers. At scale, redundant image libraries translate directly into recurring budget line items that survive long after the projects they documented are complete.

The City of Stirling, which administers one of Perth's largest local government areas covering suburbs from Scarborough to Balga and north to Gwelup, undertook an internal records review in late 2025. The exercise was part of a broader push to ready the council's systems for integration with the State Records Office of Western Australia's updated digital preservation framework. The review identified duplicate image sets across building inspection records, urban planning submissions, and community facility documentation — categories where the same property photograph had been attached to multiple applications over successive years.

At the state level, the Department of Transport's asset management division has flagged similar issues in its Stirling Naval Base infrastructure dossiers, where AUKUS-related construction documentation is expanding rapidly. Accurate, clean image records are not a bureaucratic nicety in a defence context — they underpin security audits, contractor compliance checks, and insurance valuations for facilities that cannot be easily reinspected once access restrictions are in place.

The Practical Fix — and Who Is Paying For It

Deduplication software capable of identifying near-identical images — not just exact byte-for-byte copies — has become a standard offering from Perth-based IT consultancies working the state government procurement space. Firms operating out of the West Perth technology precinct along Hay Street and around the QV1 building have reported increased tender activity for digital asset remediation work since the WA Government released its updated Digital Strategy in early 2026. Contracts for image deduplication and metadata standardisation on mid-sized agency collections have been running at roughly $80,000 to $250,000 depending on collection size and the complexity of legacy systems involved.

The practical advice for local councils and state agencies is straightforward: audit before the next storage contract renewal, not after. The WA Government's whole-of-government cloud consolidation process, which is expected to reach contracting stage before the end of 2026, will benchmark agencies on the efficiency of their digital holdings. Agencies carrying bloated, unaudited image libraries will face higher cost allocations when storage is priced per gigabyte under the new framework.

For residents, the consequences are more mundane but still real. FOI requests that require staff to manually sort through duplicate image sets take longer to process. Development application records that carry redundant files can create discrepancies between what a council's system shows and what a state agency holds. Cleaning up the data now, before records migrate to new platforms, is significantly cheaper than correcting mismatches after the fact. Perth is building fast. Its digital filing systems need to keep up.