Duplicate Images, Real Consequences: What Officials, Experts and Key Figures Are Saying About Perth's Growing Visual Data Problem

Perth's planning and construction sectors are sitting on a quiet but growing problem: duplicate images embedded in official documents, development applications and digital asset registers are slipping through approval workflows and, in some cases, triggering costly re-submissions. Urban planners, records managers and digital asset specialists working across the city say the issue has worsened sharply since 2024, as WA's housing approval pipeline accelerated alongside population growth driven by interstate migration and overseas arrivals.

The timing matters. The Cook government's housing push — anchored by targets tied to the National Housing Accord — has pushed the volume of Development Assessment Panel submissions in the Perth metropolitan area to levels not seen in recent memory. More applications, faster turnaround expectations and increasingly large digital filing packages have created fertile conditions for duplicated imagery to go undetected until late in the review cycle.

Where the Problem Is Surfacing

The issue is showing up in several distinct corners of Perth's civic machinery. Practitioners working with the Metropolitan Redevelopment Authority, which oversees precincts including Elizabeth Quay and Burswood, describe image libraries that have grown organically over multiple project phases, with renderings, site photographs and heritage documentation duplicated across folders without consistent naming conventions. At the City of Stirling — one of Perth's largest local governments by population, covering suburbs from Balga to Scarborough — digital records officers have been working through a backlog of building application attachments flagged for file integrity reviews since late 2025.

Metronet, the state government's signature rail expansion program connecting corridors from Yanchep in the north to Byford in the south-east, generates enormous volumes of engineering imagery and environmental documentation. Project management contractors supporting the program have flagged that duplicate image files within compliance packages can inflate document sizes to the point where submissions fail automated gateway checks on the Department of Transport's digital lodgement portal — sending applications back to the start of the queue.

Digital asset consultants operating out of offices on St Georges Terrace say the root cause is rarely malicious. Teams working under deadline pressure routinely copy entire image folders rather than reference shared repositories, and version control disciplines that work adequately for text documents break down when applied to high-resolution photography or CAD-derived renders. A single duplicated site photograph attached to a planning submission can add between 8 and 40 megabytes to a file, depending on resolution — enough, in some cases, to push a submission package over the 100MB cap still applied by several WA local government e-lodgement systems.

What Needs to Change, and When

Professionals advising on the problem generally point to three interventions. First, adopting a centralised digital asset management platform — rather than shared drives — so that images are referenced by a single source file rather than copied repeatedly. Second, building duplicate-detection scripts into submission preparation workflows; open-source tools capable of identifying perceptually identical images have been available since at least 2020 and require minimal technical overhead to deploy. Third, updating the file-size thresholds and format requirements published by local governments and state agencies to reflect the reality of contemporary project documentation.

The state government's own Digital Strategy, which covers the 2022–2025 period and has been subject to rolling review, identifies records integrity and data quality as priority areas for WA public sector agencies. Whether individual agencies have translated that priority into practical duplicate-detection workflows is inconsistent, according to records management professionals familiar with multiple agencies.

For private sector applicants — developers lodging plans in growth corridors like Alkimos, Eglinton and the Thornlie-Cockburn Link station precincts — the practical advice from consultants is straightforward: audit your image library before you build a submission package, not after. A duplicated render caught internally costs an afternoon. The same duplication caught by a panel assessor can cost weeks of re-work and, in a market where building cost escalation remains a live concern, those weeks carry a dollar figure attached.

Standards bodies including Standards Australia have published guidelines on digital document management that provide a baseline framework. Perth-based firms that have begun applying those standards to development submissions report measurably fewer gateway rejections — and, not incidentally, smaller file sizes that are easier for assessors to open on the day they actually need to review them.