Glasgow Council Moves to Fix Thousands of Duplicate Street Images Cluttering City Planning Records

Glasgow City Council confirmed this week that a systematic audit of its digital planning archive has identified more than 4,000 instances of duplicate images embedded across planning applications, conservation area assessments, and listed building records — a problem that has quietly undermined search reliability and storage efficiency across the council's document management systems for several years.

The issue came to a head in late June 2026 after planning officers processing applications in the Merchant City noticed that multiple reference records for the same Trongate properties were pulling up identical photographs filed under different case numbers, in some instances the same image appearing five or six times. Officers flagged the problem to the council's Digital Services directorate, which confirmed the fault extended far beyond a single neighbourhood.

Why This Matters for Planning Applications Right Now

The timing is particularly awkward. Glasgow is currently processing a significant volume of planning applications tied to the City Deal regeneration programme, including proposals affecting the Clyde Waterfront corridor and the Sighthill housing development in the north of the city. Duplicate records do not just waste server space — they slow down case officer searches, create ambiguity about which image version is authoritative, and in listed building cases can introduce legal uncertainty about the documented condition of a structure at a given point in time.

Historic Environment Scotland, which works closely with the council on Category A and B listed buildings across the city, maintains its own parallel image holdings for Glasgow properties. Officers at the council's Development and Regeneration Services department are now cross-referencing entries against that external database to establish which version of a duplicated image represents the correct primary record. That reconciliation work began formally on Monday, 30 June 2026.

The Glasgow City Heritage Trust, which operates from its base on Trongate and administers grant programmes for the repair of historic buildings, also maintains photographic records connected to funded projects. Several of those records are among the files now under review, according to planning department documentation circulated internally this week and seen by The Daily Glasgow.

The Scale of the Backlog

Council documents show the duplicate image problem is concentrated in records uploaded between 2011 and 2019, a period when the council migrated from an older document management platform to its current system. Approximately 34 gigabytes of redundant image data has been identified so far. At current audit rates, officers estimate the full reconciliation will take until late September 2026 to complete.

The council's planning portal, which members of the public use to search applications for addresses across the city — from Partick to Parkhead to the Gorbals — is not expected to be taken offline during the process. Instead, a phased deduplication will run in the background, with flags applied to suspect records so case officers can manually verify before citing an image in formal correspondence.

Storage costs are also a factor. The council currently pays for cloud archiving under a contract that charges per gigabyte held beyond a threshold agreed in 2022. Removing verified duplicates is expected to bring ongoing storage costs down by a meaningful margin, though the council has not yet published a precise figure pending final audit results.

For residents and developers with active applications, the practical advice from the planning department is straightforward: if you receive correspondence referencing a photographic record and something looks inconsistent — wrong street view, mismatched date stamp, incorrect property frontage — contact Development and Regeneration Services directly using the application reference number. Officers have been asked to treat such queries as a priority during the audit period. The main planning inquiry line for Glasgow City Council is accessible through the council's website, and the Trongate offices of the Glasgow City Heritage Trust remain open to members of the public on weekdays for heritage-related queries.