Central Coast Council's Duplicate Image Problem: What Happens Next and the Key Decisions Ahead

Central Coast Council is facing a decision point over how to handle a growing archive of duplicate digital images embedded across its asset management and planning databases — a technical mess that has quietly complicated development assessment workflows in Gosford and delayed some infrastructure sign-offs in the Wyong corridor.

The problem matters now for a straightforward reason: the Council is mid-way through a governance rebuild after emerging from state administration in 2021, and any further erosion of data reliability risks undercutting the credibility that elected representatives have spent three years reconstructing. With the Gosford CBD renewal program accelerating and a pipeline of development applications along Mann Street and Donnison Street moving through the system, accurate digital records are not a back-office luxury — they are load-bearing infrastructure for planning decisions.

What the Duplication Problem Actually Looks Like

The issue centres on Council's geographic information system and associated document management platforms, where aerial imagery, site inspection photographs, and cadastral overlays have been filed multiple times under different reference numbers. Staff working on development applications — particularly those tied to the Gosford Revitalisation program and the Regional Economic Development Strategy — have reported pulling conflicting image sets for the same parcels of land, creating ambiguity about which version of a site record is current.

Specific hotspots include asset registers covering the Entrance Road drainage network in Long Jetty and stormwater infrastructure mapping around Tuggerah Business Park, where flood resilience upgrades have been planned since the 2022 budget cycle. When duplicate images show different states of the same drain or culvert, engineers and planners cannot rely on the record without a physical site check — adding time and cost to every assessment.

Council adopted a Digital Asset Management Policy in 2023 as part of its post-administration reset, but implementation has been uneven across directorates. The policy set a target of a single authoritative image source per asset record, but no public reporting has established how far the organisation has progressed against that benchmark.

The Decisions That Now Define the Timeline

Three choices sit in front of Council officers and elected members over the coming months. First, whether to fund a dedicated data remediation contract — estimates for comparable local government clean-up projects in regional NSW have ranged between $180,000 and $400,000 depending on the volume of records involved, though no Council figure has been publicly confirmed for this project. Second, whether to run the deduplication work in-house using existing GIS staff, which would be cheaper but slower given current team loads tied to the Gosford waterfront precinct planning. Third, whether to pause certain categories of asset updates until a new cloud-based records platform — flagged in the 2025-26 Operational Plan — is fully deployed.

The timeline pressure is real. The NSW Government's Reconstruction Authority has been working with councils across the state on climate resilience mapping following the June 2022 floods, and Central Coast's stormwater infrastructure records feed directly into that regional dataset. Errors in the local layer create errors upstream.

Housing is another forcing function. The Central Coast has recorded median house prices that have risen sharply since 2020 as Sydney commuters moved north, and development activity around Green Point, Woy Woy, and the Gosford CBD has lifted the volume of planning applications Council must process. More applications means more image records, and without a clean system, the backlog compounds.

Ratepayers will be watching the next quarterly budget review, due in September 2026, to see whether a remediation line item appears. The alternative — absorbing the problem into routine operations — carries its own cost in staff hours and assessment delays. Council's administration team has not publicly confirmed a preferred path, but the September Council meeting will be the first formal opportunity for elected members to direct resources at the problem or defer again. Either choice will set the pace for everything that follows.