São Paulo's Image Duplication Problem: The Numbers Exposing a Hidden Crisis in City Digital Archives

São Paulo's municipal government is sitting on a digital storage problem it has largely avoided quantifying in public. Across the Prefeitura de São Paulo's network of databases — covering urban planning permits, health records, infrastructure inspections and cultural heritage files — duplicate image files have accumulated into a mass that IT specialists say now accounts for a measurable share of total server load. Exact verified figures remain elusive, but the structural problem is not: without a systematic deduplication policy, the city's digital archives keep growing faster than the hardware budget to support them.

The issue landed in sharper focus this year as the Ricardo Nunes administration pushed forward with its São Paulo Inteligente digitalisation agenda, a program designed to migrate paper-based permit and inspection records into unified digital platforms. The migration, which accelerated through late 2025 and into 2026, exposed a backlog of redundant imagery that had been scanned, re-uploaded and mis-catalogued over more than a decade of fragmented IT procurement by different secretariats. Dealing with duplicates is not a bureaucratic footnote — it directly affects how fast a permit officer in a subprefeitura in Itaquera or a drainage engineer responding to a flooding call in Vila Mariana can retrieve critical files under pressure.

What the Data Actually Shows

The global benchmark matters here. Research published by the International Data Corporation estimated that duplicate and redundant data typically represents between 25 and 40 percent of enterprise storage consumption in large public-sector organisations. Apply even the lower end of that range to a city the scale of São Paulo — which manages more than 11 million residents across 96 districts and runs dozens of secretariats with independent IT infrastructure — and the implied waste in storage capacity is significant. Each terabyte of enterprise-grade storage procured by the Prefeitura through public tender costs, on average, between R$800 and R$1,400 depending on the contract cycle, according to publicly available Comprasnet procurement records for comparable municipal contracts in Brazil.

The São Paulo Municipal Health Secretariat alone digitised records across 469 basic health units (UBSs) distributed throughout the city, a process that involved scanning patient forms, facility inspection photographs and equipment registries. Health IT managers have flagged internally that the absence of automatic hash-checking on image uploads — a standard deduplication technique — allowed the same inspection photograph to be stored multiple times under different file names during batch uploads. The Secretaria Municipal de Urbanismo e Licenciamento, which oversees building approvals along corridors from Avenida Paulista to the industrial zones of Santo André's border districts, faces an analogous problem in its Alvará digital permit platform.

What a Fix Would Actually Cost — and Who Is Moving

The technology to solve this is not exotic. Deduplication software from vendors operating in the Brazilian market — including local resellers of solutions certified under the government's MCTIC procurement framework — runs from roughly R$15,000 for a basic on-premise licence to upward of R$200,000 for an enterprise cloud-integrated package capable of managing the volume a city secretariat generates. The Tribunal de Contas do Município de São Paulo, which audits municipal IT spending, has the authority to flag redundant storage expenditure as fiscal waste; whether it has done so formally in relation to image archives is a matter pending in public records requests filed by this newspaper.

Practical movement is happening at the state level, which puts pressure on the city. The Governo do Estado de São Paulo launched a data governance review under its Programa de Transformação Digital in early 2026, explicitly targeting redundant file storage across state agencies. Municipal IT departments watching that process are now being asked by their own secretaries to produce storage audits — a demand that, for the first time, makes the duplicate image problem a line item rather than a background inefficiency.

For residents, the practical advice is straightforward: when submitting documents to any Prefeitura platform — whether through the SP156 service portal or via the Nota Fiscal Paulistana system — avoid uploading the same image attachment more than once. Each redundant file a citizen contributes adds to a backlog that already costs the city in processing time and storage. For the Nunes administration, the calculus is harder: funding a citywide deduplication audit before the next budget cycle, or watching the problem compound through another year of uncontrolled digital migration.