Perth councils and builders race to fix duplicate image problem hitting DA approvals this week

Dozens of development applications across Perth's northern and southern growth corridors have been delayed this week after planning officers flagged a recurring problem: duplicate or near-identical site images uploaded to the state's online DA portal are triggering automated compliance holds, freezing approvals that builders and developers had expected to land before the July financial quarter closed.

The timing is pointed. Western Australia's housing market is absorbing one of the steepest population surges in the country, driven by AUKUS-related defence workforce arrivals at HMAS Stirling and a continued influx of skilled migrants into the resources sector. Every week a DA sits unresolved adds pressure to an already constrained construction pipeline, particularly in corridors like Alkimos, Brabham and Eglinton where land releases are moving faster than the approvals infrastructure behind them.

What triggered the backlog this week

The problem centres on how architectural and drafting firms prepare image packages for the state's Development Assessment Panel submission platform. When a firm submits multiple lots within a single estate — common practice in the outer northern corridor between Yanchep and Alkimos — site photos are often duplicated across application sets to satisfy documentation checklists. The portal's validation layer, updated in late June, now flags files with matching metadata as potentially non-compliant, routing them to manual review queues.

The Urban Development Institute of Australia WA has been in contact with the Department of Planning, Lands and Heritage this week about the delays, according to industry sources familiar with the discussions, though no formal public statement has been issued by either organisation as of Saturday morning. The City of Wanneroo, which processes a significant share of Perth's greenfield applications, confirmed on its website this week that some applicants may experience extended processing times due to a documentation review affecting electronically lodged files.

Perth-based drafting firm submissions prepared for estates in the Alkimos Beach precinct — where Stockland and LWP Property Group have active lot release programs — have been among those caught in the hold, industry participants say. The Brabham area, east of Ellenbrook, has seen similar delays affecting applications lodged through private certifiers working with the City of Swan.

What the data says about the stakes

The Real Estate Institute of Western Australia reported in its June 2026 quarterly update that Perth's median house price reached $785,000, with rental vacancy sitting below one percent. Against that backdrop, any systemic friction in the approvals pipeline carries direct cost consequences — builders operating on fixed-price contracts face holding costs on titled land while they wait for permits to issue.

The WA Government's Metronet expansion, specifically the Yanchep Rail Extension that opened in stages from 2024, has made outer northern suburbs significantly more attractive to buyers, accelerating lot take-up rates in precisely the areas now affected by the image duplication holds. Construction commencement data from the Housing Industry Association WA showed the northern corridor accounted for a disproportionate share of new dwelling starts in the March 2026 quarter.

The Department of Planning, Lands and Heritage has not publicly specified a resolution timeline, but the department's online service notices page indicates technical reviews of this nature are typically resolved within five to ten business days of identification. For applications lodged before June 27, that window expires next week.

Builders and owner-builders with applications currently in review are advised to log into the ePlanning portal and check whether their submission status shows a documentation hold flag. If it does, the practical fix is straightforward: re-export site photographs with unique file names and distinct metadata timestamps before resubmitting the image package. Drafting firms working across multiple lots in a single estate should generate separate photo sets for each lot reference number rather than copying files across submissions. The City of Wanneroo's development services team on Dundebar Road in Wanneroo can be contacted directly for estate-specific guidance. Acting early, rather than waiting for the department's automated review to clear, is the faster path back to an approval.