Duplicate Images, Cluttered Plans: How Central Coast Stacks Up Against Global Cities Tackling Urban Data Dead Weight

Central Coast Council is working through a backlog of duplicate digital imagery embedded across its planning portal, asset management databases and public-facing mapping tools — a problem that has quietly compounded since the council emerged from state administration in 2021. The duplication issue is not cosmetic. Redundant images slow development application processing, inflate server storage costs and push incorrect property photos into the council's public GIS platform used by residents along the Gosford and Wyong corridors every week.

The timing matters. Sydney recorded its hottest June since 1859 this year, and councils across NSW are under pressure to accelerate climate resilience planning, flood mapping updates and housing approvals. For a council already rebuilding institutional trust after a period of financial intervention by the NSW Government, any friction in digital systems directly delays decisions that affect residents in suburbs like Woy Woy, Tuggerah and Terrigal.

What Central Coast Is Actually Doing

Council's digital services team has been running a staged audit of imagery stored inside its TechOne enterprise platform since early 2026, according to information published in council meeting agendas. The audit targets property photographs, street-level condition images and aerial captures that were uploaded multiple times during system migrations carried out between 2020 and 2023. Some asset records in the Gosford CBD renewal precinct — particularly around Mann Street and the Kibble Park precinct — were found to carry three or four near-identical images attached to single asset entries, a legacy of data transferred from the former Gosford City Council and Wyong Shire Council systems after the 2016 amalgamation.

The Central Coast Regional Planning Panel has separately flagged that duplicate attachments in the NSW Planning Portal caused measurable delays in processing some development applications lodged through the State Government's system, though the council itself does not control that platform. The council's own fix is more targeted: a deduplication protocol being tested on the Gosford CBD parcel dataset, with a broader rollout to the Wyong employment corridor planned before the end of the 2026 financial year.

How That Compares to Cities Elsewhere

The problem is not unique to the Central Coast. Councils and municipal governments globally — particularly those formed through amalgamations or post-crisis restructures — have struggled with the same issue. Birmingham City Council in the United Kingdom, which entered the equivalent of financial administration in 2023, inherited asset management systems carrying an estimated 40 percent image redundancy across its housing stock database, according to reporting by the Local Government Chronicle. Rotterdam's urban planning authority completed a two-year deduplication project across its spatial data infrastructure in 2024, reducing storage overhead by roughly 28 percent and cutting average map-tile load times by several seconds on public portals.

Newcastle, NSW — a city of comparable scale and also a product of council amalgamation — pushed through a similar audit in 2023 using dedicated funding from its IT capital works budget, reportedly completing the project inside six months. Central Coast's timeline is longer, partly because the council is managing competing digital priorities: a rates system rebuild, an upgraded flood mapping layer for the Tuggerah Lakes catchment, and preparations for a housing strategy required under the NSW Government's Transport Oriented Development program.

For residents and developers lodging applications through the council's online services at Hely Street, Gosford, the practical upshot is that the full deduplication of council-controlled imagery is not expected until late 2026 at the earliest. In the meantime, council officers have been advised to manually verify image attachments on high-priority development files before assessment begins — adding a step to a workflow already stretched by staffing pressures in the planning department.

The council's next scheduled ICT committee briefing is due in August 2026, where progress on the deduplication audit is listed as a standing agenda item. Community members can track planning system updates through the Central Coast Council website or attend public committee sessions held at the Gosford Administration Building on Mann Street.