How Tokyo's Property Listings Ended Up Drowning in Duplicate Photos — and What's Being Done About It

Tokyo's real estate portals have a clutter problem. Across the major listings aggregators — including SUUMO, HOME'S, and AtHome — property records for central wards such as Minato, Shibuya, and Chiyoda have accumulated tens of thousands of duplicate images: the same unit photographed by multiple agencies, uploaded at different resolutions, sometimes under different property IDs. The issue is not new. But a convergence of forces in 2025 and early 2026 turned a background nuisance into a front-of-mind industry crisis.

Why does it matter now? Two pressures arrived at roughly the same time. The first was a dramatic expansion of foreign buyer activity in Tokyo residential property, particularly in Minato-ku and around Shirakane, where inbound tourism has funnelled investor interest since international arrivals rebounded sharply after pandemic-era border controls were lifted. The second was a policy shift: the Ministry of Land, Infrastructure, Transport and Tourism updated its real estate advertising guidelines in late 2024, placing new obligations on listing platforms to ensure image accuracy and prevent misleading representations. Suddenly, duplicate photos were not just a cosmetic annoyance — they created compliance exposure.

How the Duplication Accumulated Over Years

The root of the problem runs back to the early 2010s, when Japan's major real estate portals began competing aggressively for listing volume. Agencies were incentivised to upload quickly and broadly. The same property in Nishi-Shinjuku or along the Yamanote Line corridor might be listed by three separate agencies within the same week, each uploading their own photo set — or, more often, pulling from a shared internal folder and re-uploading identical JPEGs with no cross-platform deduplication system to catch them. Resolution mismatches and slightly cropped variants compounded the problem, making automated detection harder.

Industry body the Real Estate Information Network for East Japan, known as REINS, operates the primary backend through which licensed agencies share listing data. But REINS was built primarily to manage property transaction data, not image libraries. For most of its operational history, image management was effectively left to individual agencies and portal operators. There was no standardised file-naming convention, no mandatory image hash verification, and no centralised audit mechanism. Portals ran their own internal checks, but these varied widely in sophistication.

By 2023, researchers at Waseda University's Urban Planning and Real Estate Studies programme published findings suggesting that duplicate or near-duplicate images accounted for a measurable share of active listings on major platforms in the Tokyo metropolitan area — though the precise proportion varied by ward and property type. The yen's sustained weakness through 2024 and into 2025 amplified foreign buyer interest, increasing listing velocity precisely when the image infrastructure was least equipped to handle it.

What the Industry Is Now Doing

Since late 2025, SUUMO's parent company Recruit Holdings has publicly committed to rolling out perceptual hash-based image deduplication across its Tokyo listings. HOME'S operator Lifull began a parallel initiative targeting Shibuya-ku and Shinjuku-ku first, citing those wards as highest-volume problem areas. Both projects are ongoing as of July 2026, and neither company has set a public completion date for full metropolitan coverage.

The Tokyo Metropolitan Government's Bureau of Urban Development has also entered the picture, quietly consulting with major portals on data quality standards as part of the broader Smart Tokyo 2030 framework. Governor Koike Yuriko's administration has framed clean, accurate digital urban data as a prerequisite for the city's ambitions as an international business hub, though specific regulatory mandates on image deduplication have yet to be legislated.

For anyone buying or renting property in Tokyo right now, the practical reality is that listings — particularly in high-turnover areas like Roppongi Hills periphery or along Meguro River — may still show outdated or duplicated photography that does not reflect current unit conditions. Agents and buyers should cross-reference listing dates, request fresh walkthroughs, and use multiple platforms before making decisions. The fix is coming. The full rollout is not here yet.