Cairns Regional Council is now formally working through a backlog of duplicated property images embedded in its planning and asset management databases — a problem that traces back at least a decade to a period when three separate digital systems were running simultaneously without a unified file-naming protocol.
The issue matters now because the council is midway through a broader digital infrastructure overhaul tied to Queensland's Planning Act 2016 compliance requirements, and duplicated image records are slowing the verification of development applications lodged through the state's MyDAS2 portal. In a city where construction along the Esplanade and in the Woree industrial corridor is accelerating, delays in DA processing have real commercial consequences.
The roots of the duplication problem sit in decisions made between roughly 2013 and 2017, when council transitioned from an older Pathway property management system to TechnologyOne, while simultaneously maintaining a separate GIS image library managed by the council's infrastructure directorate. Staff across the Spence Street civic complex were uploading site photographs, aerial imagery, and heritage-register scans to whichever system they had access to. The result was thousands of files stored twice — sometimes three times — under different filenames but with identical content.
How the Libraries Diverged
The Cairns City Library branch on Abbott Street became an unintended illustration of the wider problem when staff there assisted the council's heritage team in digitising photographs of pre-cyclone-era buildings in the 1990s. Those scans entered one archive. When the Heritage Register was later migrated into TechnologyOne, the same images were uploaded again from hard drives held in a separate planning team office on Sheridan Street. Neither batch was flagged as a duplicate at the time because no cross-system deduplication tool was in place.
Council's geographic information team has estimated — in internal planning documents cited in a 2025 operational review — that the TechnologyOne property database alone holds more than 40,000 image files, of which a significant proportion are suspected duplicates. Queensland's Department of Resources requires councils to maintain accurate, non-redundant spatial data layers under the Survey and Mapping Infrastructure Act 2003, which added regulatory pressure to fix what had been treated as a low-priority housekeeping task.
The Far North Queensland Regional Organisation of Councils, which groups Cairns with neighbouring shires including Tablelands Regional Council and Cook Shire Council, flagged the duplicate-data issue at its March 2025 meeting in Atherton as a shared problem across member organisations. Several smaller councils had experienced delays when Great Barrier Reef Marine Park Authority officers requested supporting photographic evidence for coastal development assessments and received multiple contradictory image files for the same site.
Where Things Stand Today
Council engaged a Brisbane-based records management consultancy in late 2025 to run a hash-based deduplication audit — a process that compares files mathematically rather than by name, identifying true duplicates regardless of what they are called. Work began in the first quarter of 2026. The consultancy's contract, approved at a council ordinary meeting in November 2025, was valued at just under $180,000 according to the published contract register on council's website.
The audit is expected to complete by September 2026. Once finished, council's information technology team based at the Cairns Corporate Tower on Lake Street will manually review flagged files before deletion, ensuring that no image connected to an active DA, a First Nations cultural heritage assessment, or a disaster-resilience project under the Queensland Reconstruction Authority's Resilient Homes Fund is removed in error.
Property developers and architects lodging applications through the Cairns development industry should be aware that council's planning team may request resubmission of supporting image files if they were uploaded before January 2026, particularly for sites in the northern beaches growth corridor between Smithfield and Palm Cove. Council's development assessment team can be contacted directly through the Spence Street counter or via the MyDAS2 portal to clarify whether any pending application is affected by the audit period.