The Numbers Behind Central Coast Council's Digital Archive Mess: Thousands of Duplicate Images Are Costing Ratepayers

Central Coast Council is sitting on a digital storage problem that few ratepayers know about. An internal audit of the council's web and document management platforms, reviewed as part of ongoing post-administration reforms, identified thousands of duplicate image files spread across council-operated systems — redundant assets that are consuming paid cloud storage, slowing public-facing planning portals, and requiring staff hours to manually reconcile.

The issue has come into sharper focus in mid-2026 because the council is in the middle of a multi-year technology uplift program tied directly to the conditions set when it exited NSW Government administration in 2021. Cleaning up legacy digital infrastructure is not optional. It is, effectively, a governance requirement.

What the Data Actually Shows

Duplicate image files — photographs, maps, development application attachments and promotional assets uploaded more than once under different file names — are a common byproduct of rapid content migration. When Central Coast Council consolidated legacy systems from the former Gosford City Council and Wyong Shire Council after amalgamation in 2016, tens of thousands of digital files were ported across without systematic deduplication. That original migration left behind a metadata tangle that subsequent platform upgrades, including the shift to a cloud-hosted content management environment, did not fully resolve.

Industry benchmarks from the Australian Local Government Association's 2024 digital maturity survey — covering councils in NSW, Victoria and Queensland — found that councils operating with merged legacy systems typically carry duplicate file rates of between 18 and 34 percent of total digital asset libraries. At the higher end of that range, a council the size of Central Coast, which serves a population of roughly 345,000 residents across the Gosford and Wyong corridors, could theoretically be storing tens of thousands of redundant files.

Cloud storage is not free. Enterprise-tier object storage pricing in Australia currently sits at approximately $0.025 per gigabyte per month for standard-access tiers. High-resolution aerial photography files used in planning documents — the kind that populate the Development Application Tracker accessible from the council's Gosford-based administration hub on Mann Street — can run to several hundred megabytes each. At scale, the storage bill adds up in ways that matter to a council that only returned to full financial independence four years ago.

Beyond pure cost, the practical problem shows up in load times on public portals. Residents in Woy Woy, Terrigal and The Entrance who regularly use the council's online DA tracker to follow neighbourhood development proposals have reported sluggish performance when loading image-heavy files. Slow portals erode public trust in council transparency — a particularly sensitive issue on the Central Coast, where community confidence in the institution is still being rebuilt after the administration period exposed serious financial mismanagement.

What Comes Next for Residents and Ratepayers

The council's Digital Services team is understood to be working through a phased asset rationalisation program as part of its broader 2025–2028 ICT Strategy. The first phase, targeting the public website and the integrated planning portal, was scheduled to begin in the first quarter of 2026. Deduplication tools — software that fingerprints image files using hash-matching algorithms — can typically process a library of 50,000 files in under 48 hours, flagging confirmed duplicates for human review before deletion.

For residents, the most visible outcome should be faster load times on planning documents lodged through the council's ePathway portal, which handles DA submissions and tracking across the entire local government area from Patonga in the south to Lake Munmorah in the north. Faster portals also reduce the call volume to the Gosford Customer Service Centre on Donnison Street, freeing staff for more complex inquiries.

The broader lesson here is mundane but consequential: digital housekeeping is infrastructure spending. Every gigabyte of duplicate data retained is a small, recurring cost that compounds over time. For a council that spent three years under state-appointed administration partly because it lost track of where its money was going, getting control of the small numbers matters just as much as the large ones.