The Numbers Game: How Duplicate Images Are Quietly Inflating Perth's Property Listings

Perth's property market is running hot enough without the added confusion of duplicate listing photographs, but a growing body of data suggests the practice is widespread, costly, and largely invisible to consumers scrolling through realestate.com.au at midnight. Industry analysts tracking Western Australian digital listing data estimate that duplicate or reused images now appear in a meaningful share of active rental and sales listings across greater Perth — the same bathroom photograph showing up in a Cannington three-bedroom and a Scarborough one-bedder, or a stock garden shot recycled across dozens of listings managed by the same agency.

The timing matters. Western Australia's population has grown sharply since 2023, driven partly by AUKUS-related defence workforce arrivals and continued resources sector demand. The Real Estate Institute of Western Australia has noted persistently low vacancy rates across the metropolitan area, putting pressure on prospective renters and buyers to make fast decisions — often from a phone screen, without an in-person inspection. That urgency makes accurate visual information more important, and its absence more damaging.

What the Data Actually Shows

The mechanics of the problem are straightforward. When a property management team relists a unit — say, in a block on Beaufort Street in Mount Lawley — they may pull images from a previous tenancy campaign rather than commission new photography. Computational image-matching tools, the same category of software used by digital platforms to catch copyright infringement, can detect pixel-level duplication across listing databases. Pilot audits conducted in other Australian capital cities using such tools have found duplicate image rates ranging from roughly 8 to 22 percent of active listings, depending on the suburb density and the size of the managing agency.

Perth's rental market adds a specific complication: the Metronet corridor expansion along the Thornlie-Cockburn Link, opened in stages from late 2023, has pushed investor activity into previously quieter suburbs including Cannington, Beckenham and Cockburn Central. Higher turnover in those corridors means listings go up faster, with less time for fresh photography. A two-bedroom apartment in Beckenham that changed hands or tenants three times in 18 months could theoretically carry the same set of images from its first campaign — photos that may no longer reflect its condition.

Consumer advocacy group CHOICE has previously examined misleading listing photography nationally, and the Australian Competition and Consumer Commission maintains guidelines under the Australian Consumer Law requiring that representations in advertising — including photographs — not be misleading or deceptive. The threshold for a formal complaint is not particularly high if a property's actual condition differs materially from what was shown online.

What Agencies Are Doing — and What Buyers Should Check

Several Perth agencies operating along the St Georges Terrace commercial strip have begun adopting listing integrity checklists that include an image audit step before any relisting goes live. The Real Estate Institute of Western Australia's professional development arm has flagged digital listing standards as a training priority for 2026, though formal mandatory standards remain a policy discussion rather than a regulatory requirement.

For buyers and renters, the practical defence is straightforward: reverse image search any listing photograph using Google Images or TinEye before attending an inspection. Paste the image URL into either tool and check whether the same photo appears attached to a different address. It takes under a minute per image and has caught genuine discrepancies in markets from Fremantle to Forrestfield.

Sellers and landlords commissioning new photography should also request metadata — the EXIF data embedded in digital image files records the date and sometimes the device used to take a shot. An image claimed to be current but carrying a capture date from 2021 is a straightforward red flag. Many property management contracts now in circulation across Perth do not explicitly require fresh photography at each relisting, leaving the responsibility to the agent's discretion.

With Perth's median house price still elevated and rental competition showing little sign of easing through the second half of 2026, the cost of making a decision based on inaccurate visual information is not trivial. The data on duplicate images is still patchy, but what exists points in one direction: the problem is real, it scales with market activity, and self-protection remains the most reliable tool consumers currently have.