Canberra's Duplicate Image Problem: How the Capital Stacks Up Against Cities Tackling the Same Digital Mess

The ACT government holds tens of thousands of digital images across its planning, property and infrastructure databases — and a growing number of them are duplicates, mislabelled, or so outdated they show buildings that no longer exist. Getting on top of that backlog has become a quiet but expensive administrative headache, one that Canberra shares with capital cities from Wellington to Edinburgh, though each is handling it very differently.

The issue has sharpened in 2026 because of two converging pressures. The ACT Planning Act 2023, which overhauled development assessment rules, triggered a bulk re-upload of property imagery to the government's online planning portal. At the same time, the Light Rail Stage 2B corridor through Commonwealth Avenue and into Woden has generated hundreds of new site photographs, survey images and drone captures that now sit alongside — sometimes duplicating — images taken as recently as 2023. Agencies managing those records have had to make decisions about what to keep, what to retire, and what to replace, without a single agreed protocol to guide them.

What Other Cities Are Doing

Wellington City Council in New Zealand began a formal duplicate-image audit program in 2024 after its resource consent portal was found to contain multiple versions of the same property photographs, some dating to 2011. The council assigned two dedicated digital records officers to the task and completed a first-pass review within eight months. Edinburgh City Council has taken a different route, contracting a third-party records management firm to run automated deduplication software across its planning image library — a process the council said publicly reduced its stored image volume by roughly 22 percent.

Closer to home, the City of Melbourne embedded duplicate-image checks into its standard planning submission workflow from January 2025, meaning new images are screened against existing records before they enter the system. That stops the pile growing, even if it does not address the existing backlog.

Canberra has not yet adopted any of those three models in full. The ACT Environment, Planning and Sustainable Development Directorate runs its own digital asset management system, but as of mid-2026 there is no publicly announced deduplication audit equivalent to Wellington's. The Australian National University's INSPIRE Digital Infrastructure research group, based on Acton campus, has flagged the broader problem of duplicate geospatial imagery in government datasets as a research priority for its 2026–27 program, suggesting the issue is being taken seriously in at least some quarters of the capital's institutional life.

Local Stakes Are Higher Than They Look

Gungahlin and Belconnen — the two fastest-growing residential areas in the territory — are generating the largest volumes of new property imagery as subdivision and medium-density development accelerates. The Suburban Land Agency, which oversees land release in both districts, publishes images of new blocks on its sales portal. Duplicate or outdated images on that portal carry a real cost: prospective buyers comparing listings on Flemington Road in Gungahlin or around the Belconnen town centre have complained in public forums about photographs that do not match the current state of a site.

Replacing a single set of professionally shot property images through an ACT-registered photographer currently costs between $350 and $800 per session, according to published rate cards from several local firms. Multiplied across even a few hundred affected listings, the remediation bill adds up quickly — and that is before accounting for staff time spent identifying which images need replacing in the first place.

The practical upshot for anyone dealing with ACT government property or planning records right now is straightforward: do not assume an image on an official portal reflects current site conditions. Verify on the ground, particularly for properties in the Woden Valley corridor where Light Rail Stage 2B construction has altered streetscapes significantly since late 2024. For agencies, the experience of Wellington and Melbourne suggests that front-end workflow controls — stopping duplicates entering the system — are cheaper in the long run than retrospective audits. Whether Canberra formalises that approach before the next wave of Gungahlin land releases in late 2026 will be the practical test of how seriously the directorate is taking the problem.