Duplicate Images in Council's Property Database: What Happens Next and the Key Decisions Ahead

Central Coast Council is facing a decision point over how to handle a growing backlog of duplicate images embedded in its property and infrastructure asset database — a technical problem that, left unresolved, complicates everything from flood-risk mapping in Wyong to development assessment in Gosford CBD. The council's digital asset team flagged the issue internally in the second quarter of 2026, and elected members are now being asked to approve a remediation pathway before the financial year rolls over.

The timing matters. Council only emerged from state-imposed financial administration in 2023 after years of governance failures that left ratepayers liable for a debt load that peaked above $560 million. Rebuilding trust in council systems — including the digital ones — is central to the recovery narrative chief executive officer Rik Hart has pushed since stabilisation began. A database riddled with redundant imagery is not a catastrophic failure, but it is the kind of low-level dysfunction that erodes confidence in the institution's operational competence.

What the Problem Actually Looks Like on the Ground

The duplicate image issue is concentrated in two data-heavy programs: the council's road and stormwater inspection records across the Tuggerah Lakes foreshore precinct, and the building and development file system that feeds into the Gosford Regional City planning pipeline. In practical terms, field officers uploading condition photos from sites like Pirrita Drive, Bateau Bay or the Empire Bay foreshore end up creating multiple file entries for the same asset inspection. Over time, those duplicates inflate storage, slow retrieval, and — critically — can cause version-control errors when engineers pull imagery to assess flood or structural risk.

The council's Geographic Information Systems unit, based at the Wyong administration centre on Hely Street, has been tasked with auditing the scope. A preliminary internal review estimated that duplicate records may account for between 15 and 22 per cent of all imagery filed in the infrastructure module since 2021, though the council has not publicly released those figures and they should be treated as indicative until a formal audit is complete.

There are three broad options on the table. The first is a manual review — labour-intensive, slow, but carried out in-house without additional vendor cost. The second involves engaging the council's existing software provider to run an automated deduplication sweep, which carries a licensing and service cost. The third option, which some within the organisation favour, is a staged hybrid: automated flagging followed by human sign-off on any file touching a flood-overlay zone or a live development application in the Gosford CBD corridor between Mann Street and Donnison Street.

The Decisions That Cannot Wait

Council's ordinary meeting scheduled for late July 2026 is the first realistic opportunity for councillors to receive a formal briefing and vote on a preferred approach. If the decision slips to the August cycle, the remediation work will overlap with the spring infrastructure inspection season — the period when field teams are busiest and database load is highest.

The financial question is not trivial. Vendor-led deduplication services for local government asset systems typically run in the range of $40,000 to $120,000 depending on database size and integration complexity, based on contract disclosures from comparable NSW councils in recent years. Central Coast's system is larger than most regional councils given its merged-entity size — the 2016 amalgamation of Gosford City and Wyong Shire councils created one of the largest local government areas in NSW by population, now serving roughly 345,000 residents.

The practical stakes extend beyond IT housekeeping. With the council's Gosford CBD renewal strategy moving into a more active phase — the Kibble Park precinct and the Central Coast Stadium surrounds are both live planning conversations — having a clean, reliable asset record underpins everything from development assessment turnaround times to infrastructure grant applications to the state government. Errors traced back to duplicated or mis-versioned imagery could slow those processes at exactly the wrong moment.

Councillors and community members wanting to track the issue should watch the council's public meeting agenda portal at the Wyong and Gosford offices, where the GIS audit report is expected to appear on the July ordinary meeting agenda. Residents with development applications currently active in the system are advised to check their file status through the council's online planning portal and flag any discrepancies directly with the development assessment team.