Nairobi's Digital Records Plagued by Ghost Images, Outpaced by Lagos and Bogotá

Nairobi's Ardhi House, the ministry building on Ngong Road that holds Kenya's land registry, has been digitising title deed records since 2019. By last year the effort had moved tens of thousands of documents onto government servers. But a persistent, unglamorous problem has followed the work at every step: duplicate image files, scanned pages uploaded twice, three times, sometimes more, are clogging the system, slowing retrieval and, in the worst cases, creating conflicting versions of the same legal document.

The timing matters because Kenya is not alone in wrestling with this. Across the Global South, cities racing to build digital infrastructure are discovering that the enemy is not only corruption or underfunding. It is also basic data hygiene. Duplicate image replacement, identifying redundant or corrupted files, verifying which copy is authoritative, and systematically removing the rest, has become one of the unglamorous frontiers of urban digital governance. How Nairobi handles it, compared with how Lagos and Bogotá have tackled the same problem, tells a broader story about whether digitisation delivers on its promises.

Nairobi's particular challenge

The Nairobi City County government and the national lands ministry have been running parallel digitisation efforts, which has made the duplication problem worse. The Kenya National Geospatial Data Centre, based in Ruaraka, maintains spatial databases that overlap with records held at the Nairobi Metropolitan Services headquarters in Upper Hill. When both institutions scan the same parcel survey maps, which happens regularly, staff end up with multiple image files for a single piece of land, often saved under different file-naming conventions.

The consequences are not theoretical. In informal settlement upgrading work in Mukuru kwa Njenga, community land officers have reported delays in processing tenure documents because registry staff have to manually check which of several scanned versions of a plot map is the current one. That slows down a process that residents in one of Nairobi's densest settlements have already been waiting years to complete.

The national government's Digital Superhighway programme, announced in 2022 and targeting 1,450 government digital hubs nationwide, did not build in a mandatory deduplication protocol for image assets. That gap is now visible in the records.

What Lagos and Bogotá got right, and where they struggled

Lagos moved aggressively on this between 2021 and 2023, when the Lagos State Land Registry in Alausa, Ikeja, contracted a local technology firm to run automated hash-based deduplication across its scanned title archive. Hash-based matching, a method that generates a unique digital fingerprint for each image file and flags identical copies, reduced the registry's active image library by roughly a third, according to the Lagos State Ministry of Lands and Survey's published 2023 annual report. The process took eighteen months and cost the state government approximately 280 million naira.

Bogotá's experience was more cautious. The Unidad Administrativa Especial de Catastro Distrital, the city's cadastral authority, found in a 2022 internal audit that automated deduplication tools flagged legitimately different versions of the same document, amended surveys, corrected maps, as duplicates, nearly deleting records that had legal standing. The city paused automated deletion and added a human-review layer, which slowed throughput but prevented data loss. That lesson has since been cited in urban data management discussions across Latin America.

Nairobi is closer to Bogotá's cautious position than Lagos's faster one, partly because Kenya's land records carry an especially fraught legal history. A title deed deleted in error here is not an administrative inconvenience, it can trigger a land dispute with court costs that price out ordinary residents entirely.

The Nairobi Metro commuter rail project, which requires updated right-of-way records along corridors including the Nairobi-Syokimau line, has added urgency. Infrastructure clearances depend on clean land records. Delays in resolving duplicate files translate, eventually, into delays on the ground.

For Nairobi to move forward, the practical path involves three things the Bogotá model identified: a unified file-naming standard across agencies, an automated flagging system that marks duplicates for human review rather than auto-deleting them, and a single custodian, likely the Kenya National Geospatial Data Centre, empowered to make final calls on which image is authoritative. Without that, the city keeps digitising. It just digitises the same chaos, twice.