The Numbers Driving Perth's Duplicate Image Problem: What the Data Actually Shows

Perth's public and private sector organisations are sitting on tens of thousands of duplicate digital images across property, infrastructure and government records — and the cost of managing that redundant data is climbing faster than the state's iron ore royalties. A review of digital asset management practices across several WA government departments and major real estate platforms this year found that duplicate image files now account for a disproportionate share of storage overhead, slowing workflows at a moment when WA cannot afford inefficiency.

The timing matters. The WA Labor government is pushing billions of dollars through the Metronet rail expansion and AUKUS-linked defence projects centred on HMAS Stirling at Garden Island. Every major infrastructure project generates thousands of site photographs, architectural renders and progress images. Without active deduplication protocols, those files multiply across shared drives, email chains and cloud platforms — creating version-control nightmares that cost real money to untangle and real time to resolve.

What the Numbers Actually Look Like

Industry benchmarks from digital asset management research — including figures published by the AIIM (Association for Information and Image Management) — suggest that duplicate files typically represent between 20 and 30 per cent of total storage consumption in large organisations that lack automated deduplication tools. Apply that range to a mid-sized WA government directorate running several terabytes of project imagery and the redundant data bill runs to hundreds of gigabytes before a single new photograph is taken.

In Perth's residential property market, the problem takes a different shape. Listings on platforms serving suburbs from Subiaco to Baldivis routinely carry duplicate hero images — the same photograph appearing under multiple listing IDs when an agent re-lists a property after a price reduction or a failed sale. The Real Estate Institute of Western Australia has previously flagged data quality as a sector-wide concern, and property technology firms working the Perth corridor estimate that image duplication affects a significant proportion of active listings at any given time. The practical consequence for buyers scrolling through listings on Mounts Bay Road agency portals or checking Fremantle apartment stock is a degraded search experience and inflated perceptions of available stock.

For government procurement, the stakes are higher still. Tender documentation for projects like the Thornlie-Cockburn Link — a Metronet corridor connecting some of Perth's fastest-growing southern suburbs — runs to thousands of pages with embedded site images. When those documents circulate across multiple agencies including the Department of Transport and the Public Transport Authority, duplicate images accumulate in shared repositories without a consistent naming convention or hash-based deduplication system to catch them.

The Fix Is Not Complicated — But It Requires Commitment

Automated deduplication software has existed for well over a decade. Tools that use perceptual hashing — a method that identifies visually identical or near-identical images even when file names differ — can clear a cluttered archive in hours rather than weeks. The obstacle is not technology. It is the organisational decision to allocate a budget line for digital asset hygiene rather than treating storage as an infinitely expandable afterthought.

The WA state budget, which returned a surplus for the 2024-25 financial year driven largely by iron ore royalties, leaves little excuse for penny-pinching on this infrastructure. The City of Perth and major agencies operating out of the CBD precinct around St Georges Terrace have the fiscal room to mandate deduplication standards across their digital systems. Several local government authorities in the inner suburbs, including the Town of Vincent and the City of Stirling, have moved toward consolidated cloud platforms in recent years — a structural change that makes deduplication easier to enforce at the point of upload.

Organisations looking to act practically should start with a storage audit across their primary image repositories, prioritise any archive directly connected to public-facing platforms or procurement documents, and adopt a hash-based deduplication protocol before the next major project cycle begins. For Perth's property sector, the Real Estate Institute of WA is the logical body to set a voluntary standard. For state government, the Department of Finance's Whole of Government Technology Services unit is the place where a mandate would carry the most weight. The data problem is solvable. The question is whether the will to solve it arrives before the next infrastructure megaproject makes it significantly worse.