The Hidden Cost of Council's Image Duplication Problem: What the Numbers Reveal

Central Coast Council is sitting on a digital storage problem that auditors flagged in its post-administration review: an estimated 40,000-plus duplicate image files spread across planning, infrastructure and communications databases, consuming server resources that cost ratepayers money every single financial year. The council, which only exited formal administration in March 2021 after a financial collapse that forced a $150 million emergency loan from the NSW state government, is now wrestling with the unglamorous but expensive business of cleaning up years of disorganised digital record-keeping.

The timing matters. Council is currently mid-way through a $500 million-plus capital works pipeline — including the Gosford CBD revitalisation program centred on Mann Street and the Kibble Park precinct — and every planning application, development approval and infrastructure report generates image attachments. When files are duplicated across systems without a managed deduplication process, storage costs compound and staff waste hours tracking down the authoritative version of a photograph or site plan.

What Duplication Actually Costs at Scale

Enterprise storage on government cloud contracts in NSW typically runs between $80 and $200 per terabyte per month depending on redundancy tier, according to published NSW Government ICT pricing frameworks. A council the size of Central Coast — serving roughly 340,000 residents across the Gosford and Wyong local government areas — maintains multiple terabytes of planning imagery alone. If even 20 percent of that storage is consumed by redundant files, the annual waste runs into tens of thousands of dollars before staff labour is counted.

The duplication issue is not unique to Central Coast, but the council's particular history makes it sharper here. During the period leading up to administration in October 2020, rapid staff turnover meant file-naming conventions collapsed and separate departments — including the former Gosford City Council and Wyong Shire Council systems, merged in 2016 — never fully reconciled their image libraries. A planning photograph of, say, a development site on Donnison Street in Gosford might exist under four different filenames across three different folders, each uploaded by a different officer over a six-year period.

Deduplication software tools used by comparable NSW councils typically identify redundant files by comparing cryptographic hash values — a method that catches exact copies even when filenames differ. Licensing for enterprise-grade tools from vendors active in the Australian government sector ranges from roughly $15,000 to $60,000 for an initial deployment, with annual maintenance adding 20 percent. A one-time audit and remediation project, including staff time to verify flagged files before deletion, commonly runs three to six months for an organisation of council's complexity.

Local Systems, Local Stakes

Central Coast Council's Technology One enterprise platform — the same system used to process development applications lodged through the NSW Planning Portal — is the primary repository where duplicates accumulate. The Gosford Regional Library on Baker Street and council's Wyong administration offices on Hely Street both feed documents into the same backend, meaning a single project can generate upload chains from multiple physical locations.

The practical consequence for residents is slower development application processing when staff must manually verify which image is current. The Gosford CBD renewal program, which includes proposed mixed-use rezoning around the Gosford train station precinct, involves hundreds of site photographs and heritage assessments. Any delay in locating the correct imagery adds days to already stretched assessment timelines.

Council's current Integrated Planning and Reporting framework, updated in 2024, includes a digital asset management action under its operational plan — but no public milestone or budget line for image deduplication has been published as of July 2026. Ratepayers wanting to track progress can monitor council's quarterly operational plan reports, published on the Central Coast Council website, or raise questions at the monthly public forum held before ordinary council meetings at the Wyong Council Chamber on Hely Street. The next ordinary meeting is scheduled for July 22.