How Central Coast Council's Planning Portal Ended Up Flooded With Duplicate Images — And Why It Matters Now

Central Coast Council is working through a backlog of duplicate image files embedded across its planning and property portal — a problem that didn't emerge overnight but accumulated across more than a decade of stop-start digitisation efforts, two separate council mergers, and a period of external administration that disrupted nearly every internal system the organisation ran.

The issue matters now because council's online DA tracker, used daily by homeowners from Gosford to Wyong, developers lodging applications along the Mann Street renewal corridor, and heritage researchers cataloguing sites from Terrigal to Toukley, relies on accurate document and image records to function. When duplicate image files sit in the database — sometimes three or four versions of the same site photograph or cadastral map — it slows search results, inflates storage costs, and creates genuine confusion about which version of a record is the authoritative one.

Where the Problem Came From

The origins trace directly to 2016, when the NSW Government forced the merger of Gosford City Council and Wyong Shire Council into a single entity. Both legacy councils ran separate content management systems. Gosford operated on one document platform; Wyong ran another. When staff attempted to migrate records into a unified system, automated import tools flagged conflicts and, rather than deleting files, defaulted to retaining duplicates. That decision — cautious at the time — left the merged database carrying redundant image files from the outset.

The problem compounded in 2020, when the council was placed into administration by the NSW Government following a financial crisis that saw the organisation record a projected deficit of roughly $89 million. Three administrators were appointed, normal committee governance was suspended, and technology upgrade projects — including a planned audit of the document management system — were shelved. Staff turnover during the administration period was significant, and institutional knowledge about which files were duplicates and which were genuine alternate records walked out the door with departing employees.

Central Coast Council formally exited administration in May 2021, but the digital housekeeping problems it inherited did not exit with the administrators. The council's ICT team, operating from the Gosford headquarters on Mann Street, has since been tasked with auditing the portal, but the work is granular and resource-intensive. Each duplicate must be assessed against the original record before deletion — an automated purge risks removing files that appear identical but carry different metadata, such as different survey dates or different applicant versions of the same site plan.

What the Backlog Looks Like in Practice

For residents lodging or tracking development applications in suburbs like Erina, Woy Woy, or Tuggerah, the practical effect has been intermittent delays in document retrieval and occasional instances where the wrong version of a site photograph appears against a DA record. The council's customer service centre on Donnison Street in Gosford has fielded complaints related to portal accuracy, though the council has not publicly released figures on the volume of those complaints.

The timing is particularly awkward given the attention being paid to Gosford CBD renewal. The Gosford Regional City Action Plan, which underpins a range of development incentives along Mann Street and the waterfront precinct, depends on the planning portal being a reliable source of truth for investors and certifiers assessing site histories. Any ambiguity in image records attached to DA files for key sites slows due diligence.

Council's current technology roadmap, referenced in its 2025-26 Operational Plan, includes a document management review as a priority project. The practical advice for anyone lodging a DA or researching a property record right now is straightforward: if a site photograph or supporting image on the portal looks inconsistent with what you know of the property, contact the council's planning department directly on 1300 463 954 to confirm which file is the current authoritative version before relying on it in any submission. The portal's data is improving, but the clean-up is not finished.