How Melbourne's Planning System Got Tangled in a Duplicate Image Problem — And Why It's Costing Developers Time and Money

Hundreds of Victorian planning permit applications have been delayed or rejected in recent months after a persistent technical flaw caused identical or near-identical images to be flagged as duplicates within the state's ePlanning portal, forcing applicants to resubmit documentation that was, in many cases, perfectly valid. The problem sits at the intersection of ageing document-processing software and a surge in digitised planning submissions — and it has been quietly building since at least mid-2024.

The timing matters because Victoria's planning system is already under significant strain. The state government's housing density reforms, which accelerated through 2025 and extended medium-density zoning across dozens of established suburbs including Brunswick, Preston and Footscray, generated a sharp rise in the volume of residential development applications lodged with councils and the Department of Transport and Planning. More applications mean more attached plans, site photos, shadow diagrams and survey images — exactly the file types most vulnerable to duplicate-detection errors.

How the Problem Developed

The ePlanning portal, managed by the Department of Transport and Planning and used by councils across greater Melbourne, relies on automated metadata checks to organise and validate uploaded documents. When two image files share identical pixel dimensions, file size or embedded timestamp data — even if they show different content — the system can treat them as the same file and either suppress one or throw a validation error. Architects and town planners began reporting this behaviour in volume around August 2024, according to planning industry forums including those hosted by the Planning Institute of Australia's Victorian chapter.

For firms lodging multi-lot subdivision applications in growth corridors like Werribee or Craigieburn, a single validation failure can hold up an entire bundle of documents. Resubmission queues at councils including Wyndham City and Hume City were reported to have stretched to several weeks during the first quarter of 2026, according to discussion threads on the Urban Melbourne community forum — though council processing times are not uniformly published in a way that allows direct comparison.

The issue is compounded by the fact that many Melbourne architecture practices standardised their site photo exports through the same software — commonly Adobe Lightroom or similar batch-export tools — which strip or overwrite embedded metadata, producing files with matching technical fingerprints even when the visual content differs. A practice in Fitzroy photographing a terrace on Smith Street and a studio in South Yarra photographing a site on Toorak Road could inadvertently produce files that the portal treats as identical.

What's Being Done — and What Still Isn't

The Department of Transport and Planning acknowledged the validation behaviour in a technical notice circulated to registered ePlanning users in March 2026, advising applicants to manually rename files using unique sequential identifiers before uploading. The workaround reduces failures but does not fix the underlying metadata-matching logic, which would require a more substantive software update.

The Planning Institute of Australia's Victorian division has been in contact with the department about the issue. No public timeline for a software patch has been confirmed. In the meantime, some larger practices have adopted internal protocols requiring all exported site images to be run through a batch-renaming script before any portal submission — adding a step that smaller sole-practitioner firms may not have the administrative capacity to manage consistently.

For applicants caught in the current backlog, the practical advice from planning consultants is straightforward: audit every image file in a submission package before lodgement, ensure no two files share a name or an identical file size, and keep a complete log of resubmission dates in case a dispute arises over processing timeframes. Councils are generally sympathetic to delays caused by portal errors but are not uniformly issuing extensions automatically — applicants need to request them in writing, referencing the March 2026 departmental notice.

The broader lesson is that Victoria's push to digitise and accelerate its planning system — a worthy goal given housing pressures from Dandenong to Sunbury — has moved faster than the technical infrastructure underpinning it. Fixing that gap quietly, without a public tender or a ministerial announcement, is the unglamorous work that determines whether the density reforms deliver dwellings or just paperwork.