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Building guide

Harumi Island Triton Square View Tower

A 50-storey, 624-home tower near Kachidoki Station, developed by Urban Development Corporation (now UR) and built by Mitsui Construction. Completed 1998.

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The building

Location
Chuo-ku, Kachidoki Station
Completed
1998
Height
50 storeys
Homes
624
Developer
Urban Development Corporation (now UR)
Builder
Mitsui Construction
Management
Sumisho Tatemono, outsourced, day-time manager

A summary from published sources; the management rules and the management report are checked again before any purchase or sale.

About 6 sales a year in this building

30 sales in 2021–2025, from Japan's Ministry of Land, Infrastructure, Transport and Tourism transaction records. A building that changes hands often is easier to buy into and easier to sell.

Around the building

Walking distances from the building

General hospitals
Showa University Koto Toyosu Hospital (25 min, 1,949 m)
International schools
Chuo International School (Tokyo Campus) (25 min, 1,976 m)

Area in Numbers

Resale condos, Harumi
JPY 2,000,000
Median sale price per sq m of floor area · 329 sales in the latest year
Official land price nearby — land only
JPY 1,430,000
Per sq m of land · nearest official point, about 0.3 km away · 1 Jan 2026

A home's price per sq m is on floor area and includes the building; the official land price is per sq m of land alone.

Change over 1 year · public statistics
Area-wide figures, not this building
Residential land
↑ 13.8%
Chuo-ku average · 1 Jan 2026 vs a year earlier
Land near this building
↑ 12.6%
Nearest official point · 1 Jan 2026 vs a year earlier
Resale condo prices
↑ 18.0%
Chuo-ku · median per sq m of 1,859 sales vs a year earlier
Resale condo prices, Harumi
↑ 16.8%
median per sq m of 329 sales vs a year earlier
Apartment rents
↑ 6.7%
Tokyo 23 wards · Q1 2026 vs a year earlier
Condominium price index
↑ 9.6%
Tokyo · December 2025 vs a year earlier
Sources and notes

All figures are public statistics for the wider area, not an appraisal of this building, and none of them guarantees future rent, value or performance.

Homes listed in this building

Buying or selling in Harumi Island Triton Square View Tower

We can check what is for sale in this building, including homes that cannot be advertised online. If you own a home here, we also introduce it to overseas buyers.

Prefer e-mail? kenichi.aoki@i-interface.com