Delhi's civic data infrastructure has a problem hiding in plain sight. Across the Municipal Corporation of Delhi's property tax portal, the Delhi Development Authority's housing application system, and the Delhi Metro Rail Corporation's passenger verification database, duplicate image files — scanned documents, ID photographs, property maps — have accumulated into a backlog that IT administrators now describe as operationally unmanageable. The question is no longer whether to act. It is who decides, how fast, and at what cost to taxpayers.
The issue has sharpened in 2026 because Phase 4 of the Delhi Metro expansion, currently under construction across corridors linking Janakpuri West to RK Ashram Marg and Aerocity to Tughlaqabad, has forced a consolidation of land acquisition records held by the Delhi Metro Rail Corporation. Those records — many digitised in rushed scanning drives between 2019 and 2022 — contain duplicate images at rates that technology consultants working on the project have flagged internally. Getting land compensation paperwork right is not an administrative nicety. It directly affects thousands of families in affected neighbourhoods including Rohini, Mukherjee Nagar, and Dwarka Sector 21.
Where the Backlog Lives — and Why It Has Grown
The MCD's online property tax platform, which covers roughly 14 lakh registered properties across the four zones of the unified corporation, relies on a document management system that was stitched together after the 2022 trifurcation reversal merged the three separate MCDs back into one body. That merger brought together three incompatible legacy databases. IT staff at the Civic Centre on Minto Road have been working since early 2024 to deduplicate records, but the job has expanded rather than contracted as more citizens upload supporting documents through the online grievance portal. Some property files now contain the same scanned ownership deed uploaded four or five times across different application cycles.
The Delhi government's own e-district portal, managed through the Department of Information Technology at the Delhi Secretariat in ITO, faces a parallel problem. Citizens applying for caste certificates, income certificates, and domicile documents through the Aam Aadmi Party's push for paperless governance have repeatedly re-uploaded photographs and identity proofs when applications stall. Each failed submission creates a new image record without retiring the old one. The result is storage bloat and, more seriously, verification errors when automated systems flag a citizen as having multiple conflicting identity photographs on file.
The Decisions That Cannot Wait
Three choices will define what happens next, and each carries political as well as technical weight. First, the MCD must decide by the end of this financial year — March 31, 2027 — whether to procure a centralised deduplication engine or contract the work to a third-party vendor under the National Informatics Centre framework. A centralised in-house solution would cost less over time but requires hiring specialised staff that the corporation does not currently have on payroll. Outsourcing is faster but draws scrutiny in a city where AAP has repeatedly criticised BJP-aligned procurement processes at the central level.
Second, the Delhi Development Authority, which operates independently of the elected state government under the Ministry of Housing and Urban Affairs in New Delhi, must align its image retention policy with whatever standard the MCD adopts. Without that alignment, a citizen trying to link an MCD property record to a DDA flat allotment — as thousands of Rohini and Dwarka residents must do — will still encounter contradictory data. The DDA's current data retention guidelines date from a 2018 circular and have not been updated to account for the volume of scanned material generated since then.
Third, and most immediately, the Delhi Metro Rail Corporation needs a clear protocol before land acquisition for the Phase 4 Janakpuri–RK Ashram corridor reaches its most contested stretch through Punjabi Bagh and Rajouri Garden, expected in late 2026. Duplicate compensation documents in that process could trigger legal challenges that delay the project's targeted partial opening in 2028.
The coming months will test whether Delhi's three major civic bodies — the MCD, the DDA, and the DMRC — can coordinate on something as unglamorous as file management. The city has handled bigger engineering challenges. The harder problem, consistently, is getting three institutions with different reporting lines to agree on a shared standard before a deadline forces their hand.