Delhi's Municipal Agencies Move to Purge Thousands of Duplicate Images From Public Records This Week

Delhi's three municipal corporations — the newly unified Municipal Corporation of Delhi, along with the Delhi Development Authority and the Delhi Urban Shelter Improvement Board — launched a joint technical drive this week to identify and replace duplicate images embedded in public-facing digital records, internal databases, and the citizen services portal at mcdonline.nic.in. The effort, which began on Monday, July 1, is the first coordinated deduplication exercise since the three bodies underwent partial IT integration in late 2024.

The timing is not accidental. The push follows a broader Central government directive under the Digital India programme requiring all state-level civic bodies to audit their digital asset repositories before the end of the current financial quarter on September 30. Delhi's agencies, which collectively manage tens of millions of scanned documents — property records, ration cards, construction plans — are among the largest municipal data holders in the country. Redundant image files slow retrieval speeds, inflate server storage costs, and in several documented cases have led to duplicate or conflicting entries in property ownership records, creating legal headaches for homeowners in areas like Rohini and Dwarka.

What the Deduplication Drive Actually Involves

The technical process centres on perceptual hashing — a method that generates a short fingerprint for each image file and flags near-identical copies for human review before deletion or replacement. Engineers contracted through the National Informatics Centre, which hosts the backend infrastructure for most Delhi government portals, are running the hashing algorithm across an estimated 40 terabytes of stored image data. That figure was cited in a public notice posted to the MCD's official portal on June 28.

Practically, this matters most for residents dealing with building plan approvals and property tax assessments. The DDA's online services desk at Vikas Sadan in INA Colony has reportedly been fielding an above-average volume of walk-in queries this week from property owners in Vasant Kunj and Janakpuri whose digital files showed mismatched or repeated floor-plan scans. The duplicates, in several cases, had caused the system to flag properties for re-assessment — wrongly, according to affected residents who turned up at the helpdesk in person.

The Delhi Urban Shelter Improvement Board's records for jhuggi-jhopri clusters — particularly in the resettlement colonies along the Yamuna floodplain — are also part of the audit. DUSIB manages housing documents for roughly 300,000 registered households in informal settlements, and officials have acknowledged publicly that the scanning drives conducted between 2019 and 2022 produced significant duplicate image sets, largely because documents were scanned multiple times at different camps without cross-referencing existing entries.

The Broader Stakes: Data Integrity Meets Political Pressure

The exercise lands at a politically charged moment. The Kejriwal-led AAP administration has staked part of its governance credibility on expanding digital services — the 'Rozgar Budget' of 2024-25 earmarked Rs 450 crore for IT infrastructure upgrades across Delhi's civic bodies. Any suggestion that underlying databases are unreliable cuts directly at that narrative. Meanwhile, BJP-controlled bodies at the Centre have pointed to data quality issues in Delhi's municipal systems as evidence of administrative drift.

For ordinary Delhiites, the practical upshot is a temporary slowdown. The MCD has advised residents to avoid submitting new property-related document requests through the online portal between July 7 and July 14, while the deduplication scripts complete their first pass. Physical counters at the Civic Centre on Minto Road and at the zonal offices in Shahdara and South Delhi will remain fully operational throughout.

Residents with pending cases — particularly those involving property mutation or building completion certificates — should carry physical copies of all previously submitted documents to any in-person appointment during this window. Anyone who receives an automated system notice citing a duplicate image in their file is advised to visit their nearest ward office with the original scanned document rather than attempting to resolve the flag online, where the portal remains in a partial maintenance state until the audit wraps up.