Perth Councils Sitting on Thousands of Duplicate Property Images — and Residents Are Paying for the Mess

Western Australian local governments and real estate platforms are quietly grappling with a growing data problem: duplicate images embedded in property records, planning portals, and housing databases are consuming public resources, delaying development approvals, and creating confusion for residents trying to sell or renovate their homes.

The issue has sharpened in 2026 as Perth's population surge — driven by AUKUS-related workforce migration and ongoing resources sector growth — has pushed housing transaction volumes to levels the state's digital infrastructure was not built to handle. The WA Department of Planning, Lands and Heritage manages property data systems that feed into council planning portals across 30 metropolitan local governments, and multiple sources within the sector have pointed to image duplication as a persistent, unresolved drag on system performance.

What Duplicate Images Actually Cost the Community

The problem is not abstract. A homeowner in Balga or Armadale lodging a development application through their local council's online portal may find their submission delayed because the system is processing redundant image files attached to the property's historical records — sometimes dozens of near-identical photographs uploaded at different stages of a property's life. Each duplicated file adds processing time. Multiply that across the City of Wanneroo, one of the fastest-growing local government areas in the country, and the drag becomes measurable.

Cloud storage is not free. State government agencies and councils using platforms integrated with Landgate — WA's land information authority, based in Midland — pay for the volume of data they hold. Industry estimates suggest storage costs for local government digital planning systems in Australia have risen by roughly 30 per cent over the past three years as image-heavy property records have ballooned. Ratepayers ultimately absorb those costs through municipal levies.

Real estate platforms operating in Perth, including those listing properties along the high-turnover corridors of Scarborough Beach Road and the southern growth corridors around Harrisdale, face a parallel version of the same issue. When a property is listed, withdrawn, relisted, and eventually sold, image sets are frequently duplicated across multiple records rather than replaced. That history accumulates. Buyers researching a property on any major listing site may be looking at photos from three separate campaigns, some years old, without clear labelling.

The Fix — and Why It Is Taking So Long

Deduplication — the process of identifying and removing redundant image files while retaining a single master copy — is standard practice in commercial data management. Several Perth-based technology firms, including some operating out of the Spacecubed innovation hub in the CBD, have developed automated tools capable of scanning property image libraries and flagging duplicates for review or deletion. The technology exists. Adoption has been slow.

Part of the delay is institutional caution. Local councils are reluctant to delete files from planning records without clear legal guidance on retention obligations under the State Records Act 2000 (WA). The Act requires councils to keep records for specified periods, but it does not explicitly distinguish between a master image and a functional duplicate — a gap that leaves IT managers defaulting to keeping everything.

The Metronet rail expansion has added a further complication. As new station precincts open across the Morley-Ellenbrook Line and the Thornlie-Cockburn Link, property records for affected parcels are being updated rapidly, and image duplication rates in those corridors are reportedly higher than average because multiple agencies — the Public Transport Authority, METRONET project teams, and local councils — are all uploading documentation simultaneously.

For residents, the practical advice is straightforward. If you are lodging a development application with your council, strip your submission of duplicate images before uploading — most portals have a 20MB file size limit, and redundant photos burn through that quickly. If you are selling, ask your agent to audit the image library attached to your Landgate property record before the listing goes live. And if you are a ratepayer curious about what your council spends on digital storage, that information should be available under WA's Freedom of Information Act. It is worth asking.