How Duplicate Images Became a Headache for Central Coast Council's Digital Records — and How We Got Here

Central Coast Council is working through a backlog of duplicate image files embedded across its digital planning, infrastructure and community services records — a problem that traces its roots directly to the chaotic period of amalgamation in 2016 and the council's subsequent slide into financial administration in 2020. The duplication issue, while unglamorous, has real consequences: slowed development application processing times, misfiled flood-zone maps, and property owners receiving incorrect legacy documents when they request official certificates.

The timing matters. The council formally exited administration in March 2021 after a period under administrator Rik Hart, and has since been rebuilding internal systems, governance structures and public trust. Digital records management was not the headline priority during that recovery, but it was always on the list. Now, with Gosford CBD renewal projects generating fresh planning activity along Mann Street and the Leagues Club precinct, the pressure on accurate, searchable digital archives has sharpened considerably.

Where the Problem Started

The 2016 merger that brought together the former Gosford City Council and Wyong Shire Council created a single local government area covering more than 1,680 square kilometres — from the southern suburbs near Calga to Lake Munmorah in the north. Both legacy councils ran separate document management platforms, separate GIS layers and separate photograph libraries for everything from development site inspections to community facility records. When those systems were merged under time and budget pressure, files were frequently ingested more than once. A single aerial photograph of Wamberal Beach, for example, might have existed in three separate folders under different naming conventions — one from the old Gosford system, one migrated from Wyong's archive, and one re-uploaded during a 2019 infrastructure audit.

The financial collapse that triggered administration in October 2020 then froze many of the remediation projects that could have caught the problem earlier. Staff were redeployed, contractors were let go, and IT improvement programs were paused. The council's own post-administration reports acknowledged that back-office systems needed significant investment to reach a standard appropriate for an organisation managing a population of roughly 340,000 residents.

Compounding all of this was a broader digitisation push that accelerated nationally after 2020, when pandemic-related restrictions made paper-based workflows unworkable. Central Coast Council, like dozens of other NSW councils, was uploading historical paper records at volume — subdivision certificates, drainage easement diagrams, heritage inventory photographs — without the metadata standards that would normally prevent duplication. The NSW Government's own data quality guidelines for councils, updated in 2022 under the Local Government Act framework, set out requirements that many smaller and mid-sized councils are still working toward meeting.

What a Fix Actually Involves

Cleaning up a duplicate image library at this scale is not a simple delete operation. Council archivists and records officers must verify which version of a duplicated file is authoritative — that is, which copy carries the correct metadata, the correct date stamp, and the correct relationship to the planning reference it supports. For flood mapping images tied to properties along Tuggerah Lake foreshores or the Wyong River corridor, getting that call wrong has direct regulatory consequences for homeowners and developers alike.

The council has been running its records remediation work in stages since mid-2023, focusing first on development application files in the Gosford and Wyong planning precincts before moving to the broader asset management and community facilities libraries. Industry guidance from the NSW State Archives and Records Authority recommends a minimum 18-month timeline for councils of comparable size undertaking similar projects.

For residents and developers, the practical advice is straightforward: when lodging a development application or requesting a Section 10.7 planning certificate through the council's online portal, check that any attached images or site photographs carry a clear date and reference number. Council officers processing applications at the Gosford customer service centre on Mann Street have been asked to flag any documents that appear duplicated or that carry conflicting metadata before a file progresses to the assessment stage. Patience during this period is warranted — but so is diligence. The records underpinning the Central Coast's planning future deserve to be accurate from the start.