Osaka Residents Discover Homes Erased From City's Digital Maps

Fumiko Yamagishi has lived in the same third-floor apartment near Tanimachi 4-chome for eleven years. Last spring, she discovered that her building had been replaced on Osaka City's official digital property map by a duplicate image of a warehouse located three blocks east on Chuo Odori. She filed a correction request in March 2026. Four months later, her home is still a warehouse on the city's records portal.

Yamagishi is not alone. Residents across at least five Osaka wards, Chuo, Naniwa, Higashinari, Abeno, and Kita, have reported that the city's integrated Urban Geographic Information System, known locally as U-GIS Osaka, is displaying duplicate satellite or aerial photographs in place of accurate imagery for their addresses. The errors, first flagged internally by staff at the Osaka Urban Planning Bureau in late January 2026, have cascaded through the system because U-GIS Osaka feeds data to municipal tax assessment records, building permit databases, and emergency response routing.

Why This Matters Beyond a Mapping Glitch

The timing is awkward for city hall. Osaka is less than three years from hosting Expo 2025 infrastructure legacy reviews, and the municipal government has staked considerable political capital on its Smart City Osaka initiative, a ¥4.2 billion digital modernisation programme launched in fiscal year 2024. A persistent image-duplication fault in a core civic database undermines the credibility of that programme at precisely the moment officials want to showcase it to international observers.

The practical consequences for ordinary residents are not abstract. Property owners in Abeno Ward have reported that duplicate images, which in several cases show vacant lots instead of occupied residential buildings, triggered automated reappraisal flags from the city's tax office on Namba-Naka Dori. At least three households received preliminary notices in May 2026 suggesting their properties might be reclassified as undeveloped land, a designation that carries a significantly different tax rate under Osaka's municipal property assessment rules. Residents say they spent weeks gathering physical documentation to contest the automated flags.

Community members in Higashinari gathered informally at the Higashinari Ward Office meeting room on June 18 to share experiences. Several described a process that felt circular: the U-GIS portal directs users to submit correction forms, but the forms feed back into the same automated system that generated the duplicate in the first place. One Higashinari resident described submitting the same correction request three times between February and May without receiving a substantive response.

Who Is Responsible, and What Comes Next

The Osaka Urban Planning Bureau has acknowledged the duplication issue in a short notice posted to its website on June 3, 2026, describing it as a data integration error introduced during a scheduled system migration in December 2025. The bureau said at the time that a technical review was underway. No corrective timeline has been publicly committed to since that notice.

The non-profit urban advocacy group Osaka Machizukuri Network, which operates out of offices near Nakazaki-cho in Kita Ward, began collecting resident complaint records in April. The group says it has documented cases from more than 340 separate addresses across the five affected wards, though that figure is drawn from voluntary self-reporting and almost certainly understates the full scope.

For residents waiting on resolution, practical options are limited but not zero. The Osaka Legal Affairs Bureau on Tenmabashi-suji maintains physical cadastral records that are updated independently of U-GIS Osaka, and those records can be used as authoritative counterevidence in disputes with tax or permit offices. Residents who have received automated reclassification notices are advised to request a manual review from their ward's taxation counter directly rather than relying on the digital portal. Ward offices in Chuo and Abeno have confirmed they can process manual override requests, though wait times are running at four to six weeks.

The Osaka Machizukuri Network says it will present its compiled complaint data to the City Council's Urban Development Committee at its next scheduled session on July 17. Whether that session produces a firm commitment to a repair deadline, or simply another acknowledgment that the problem exists, is the question residents near Tanimachi, Namba, and Nakazaki-cho are waiting to have answered.