Wollongong's Duplicate Image Problem: How the Steel City Stacks Up Against Global Peers

Wollongong City Council has quietly been working through a backlog of duplicated digital images embedded across its property information and development application systems — a problem that, left unchecked, has derailed planning decisions and land valuations in comparable industrial-transition cities from Bilbao to Hamilton, Ontario.

The duplication issue, which emerges when legacy document management platforms are migrated to newer cloud-based systems, has become an operational headache for mid-sized councils managing large volumes of DA imagery. For a city where the planning pipeline around the Port Kembla precinct and the Gipps Street urban renewal corridor is expanding, the stakes are higher than they might appear. A duplicated site photograph attached to the wrong DA file can trigger re-notification requirements, delay approvals by weeks, and in some cases expose councils to legal challenge.

What the Global Experience Looks Like

The problem is not unique to Wollongong. Newcastle in the United Kingdom — a city of roughly comparable population and a similar post-industrial redevelopment profile — completed a bulk deduplication of its planning portal image library in March 2025, after auditors found that around 14 percent of uploaded site photos across active DAs were either duplicated or misattributed. Newcastle City Council brought in a third-party records management firm and completed the job over six months.

Dunedin, New Zealand, which like Wollongong is managing a significant industrial land transition along its harbour edge, reported in its 2024-25 annual report that duplicated imagery had contributed to at least three formal objections to planning decisions in the previous financial year. The council has since mandated hash-based file verification — a process that automatically flags identical image files before they are attached to separate records.

Hamilton, Ontario, another steel-industry city now pivoting to green manufacturing, took a different approach: it embedded deduplication checking directly into its public-facing development tracker in 2024, so applicants themselves cannot upload a file that already exists in the system. Planning officials there have credited the change with reducing administrative correction requests.

Wollongong has not yet adopted any of those three approaches at a system-wide level, according to publicly available council ICT procurement documents from the 2025-26 budget cycle. The council's digital records framework, updated in February 2026, references image integrity protocols but does not mandate automated deduplication at the point of upload.

The Local Stakes Around Port Kembla and the CBD

The practical consequences in Wollongong are visible in specific precincts. Development activity around the Port Kembla Renewable Energy Zone — where BlueScope Steel's industrial land adjacencies have made planning mapping unusually complex — has generated a higher-than-average volume of site imagery uploaded to the council's ePlanning portal. The Flagstaff Hill and Fairy Meadow residential corridors, both subject to medium-density rezoning proposals in the past 18 months, have similarly seen large image batches submitted with multiple DAs.

The University of Wollongong's Smart Infrastructure Facility, based on the main campus on Northfields Avenue, has conducted research into smart records systems for local government, and its work is relevant to exactly this kind of data-integrity challenge — though the facility has not publicly announced any formal engagement with the council on the deduplication question.

For local planning consultants handling DAs in the Crown Street and Keira Street commercial precincts, the practical advice is straightforward: name image files with unique identifiers tied to the specific DA number and site address before uploading, and retain a local copy of every submission confirmation. That discipline won't fix a systemic council-side problem, but it creates a paper trail that supports any challenge if a file is later found to have been mislinked.

The council's next ICT strategy review is scheduled for the third quarter of 2026. If Wollongong's experience tracks with what Hamilton and Newcastle found, the cost of retrofitting deduplication capability after the fact runs significantly higher than building it into procurement requirements from the outset. For a regional council already managing competing pressures on its capital budget, that calculation will matter when the tender documents are written.