The Numbers That Explain Wollongong's Duplicate Image Problem — and Why It's Costing the Region Real Money

Wollongong City Council's digital asset library contains more than 340,000 individual image files — and independent auditors engaged by the council in May 2026 found that roughly 23 percent of those files are exact or near-exact duplicates. That figure, drawn from a procurement review tabled at the June ordinary council meeting, translates to approximately 78,000 redundant images sitting on council servers at an annual storage and maintenance cost the review estimated at $114,000.

The timing matters. Across NSW, local governments are under pressure from the Department of Planning to migrate planning portals and public-facing property databases onto standardised platforms before the end of the 2026–27 financial year. Duplicate imagery slows that migration, inflates data transfer costs, and — critically — can cause planning portal searches to return inconsistent results when the same development application photograph appears under multiple file identifiers. For a council managing upwards of 1,200 active development applications at any given time, the integrity of that data is not a minor housekeeping concern.

Where the Problem Clusters in the Illawarra

The worst duplication rates are concentrated in two content categories: Port Kembla industrial precinct photography, accumulated over years of BlueScope Steel transition announcements and renewable energy zone project launches, and Crown Street Mall retail activation images uploaded during successive events programs. The Port Kembla folder alone — covering the Energy Port Kembla precinct and the adjacent offshore wind coordination zone — contains 11,400 images, of which the May audit flagged 31 percent as duplicates. The University of Wollongong's Innovation Campus on Squires Way also generates a high churn of event photography pushed to shared council-university marketing platforms, compounding the problem.

Destination Wollongong, the regional tourism body based in Crown Street, maintains a separate image library fed by both council uploads and contributions from accommodation operators and venue managers. That library hit 95,000 assets in March 2026 and runs on a licensed platform that charges on a per-gigabyte storage tier. The organisation's current annual platform fee sits at $38,400 — a figure its board has flagged as likely to rise to $51,000 by December if duplication rates are not addressed before the next contract renewal.

What the Data Actually Shows

Duplicate image problems are not unique to Wollongong, but the Illawarra region's particular mix of industrial transition publicity and aggressive tourism marketing has accelerated the accumulation. A benchmark study published by the Australian Local Government Association in February 2026 found that mid-sized councils with active industrial development portfolios carried average image duplication rates of 18 percent — Wollongong's 23 percent sits five points above that figure.

The cost is not purely financial. Page load speeds on the Wollongong council planning portal averaged 4.3 seconds in the first quarter of 2026, against a state government benchmark target of under 2.5 seconds. Web performance analysis submitted alongside the May audit attributed a meaningful portion of that lag to uncompressed duplicate assets being called redundantly by the portal's content management system. Slower load times correlate directly with abandoned planning searches — an outcome that affects architects, developers and ordinary residents trying to check neighbour applications in suburbs like Figtree, Mangerton and Fairy Meadow.

Council's ICT team is now scoping a deduplication project using perceptual hashing software, which can identify visually identical images even when file names differ — a common cause of duplication when multiple staff photograph the same BlueScope site visit or foreshore activation. The project is expected to cost between $40,000 and $55,000 to implement and would run across the second half of 2026. Destination Wollongong has been in separate talks with its platform vendor about a bulk-archive tier that would cut storage costs by roughly 30 percent for assets older than three years.

For residents and businesses interacting with council digital services, the practical upshot is straightforward: the planning portal and property information pages should perform noticeably faster once the deduplication work completes, likely in the first quarter of 2027. Anyone uploading documents or images to council systems in the meantime is encouraged to check the council's digital asset guidelines — published on the council website under ICT Policy — before submitting files, particularly for development applications in the Port Kembla and Wollongong CBD precincts where image libraries are most congested.