Selected images and diagrams are reproduced from the materials supplied for this listing.
The River Place East Tower is a 28-storey tower with one basement level at 4-21-14 Shimomaruko in Ota-ku, completed in September 2004, part of a six-building development of 965 residences (184 in the East Tower). This residence is a fully renovated 3LDK of 97.29 sq m on the 19th floor, with a 30.44 sq m balcony — a south-and-west-facing corner unit with views of Mt. Fuji and the Tama River, according to the listing material.
The renovation, completed on 31 August 2026, covers new flooring and wall coverings, a double-bowl washstand, toilet, kitchen with cupboard, unit bath and joinery, as shown in the photographs, with two newly installed air conditioning units and floor heating in the living area. The plan provides a living, dining and kitchen space of approximately 21.9 jo and three bedrooms of approximately 6.8, 4.9 and 4.2 jo, each with a walk-in closet. The building has double auto-lock entry at the building entrance and lift hall, a dust station on every floor, and extensive shared facilities including a guest room, kids' arena, view lounge and theatre room (some for a fee), according to the listing material.
| Property Type | Residential Condominium |
|---|---|
| Address | 4-21-14 Shimomaruko, Ota-ku, Tokyo |
| Nearest Station | Shimomaruko Station (Tokyu Tamagawa Line) |
| Walking Distance | Approx. 9 min |
| Layout | 3LDK |
| Building Area | 97.29 sq m |
| Balcony Area | 30.44 sq m |
| Floor | 19th Floor |
| Building Height | 28 Storeys (1 basement) |
| Building Structure | Reinforced Concrete |
| Year Built | September 2004 |
| Renovation | Full renovation completed 31 August 2026 — new flooring and wall coverings, double-bowl washstand, toilet, kitchen with cupboard, unit bath and joinery, two newly installed air conditioning units and floor heating in the living area |
| Number of Units | 965 Units (965-residence, six-building development; 184 in the East Tower) |
| Tenure | Freehold Ownership |
| Management Fee | JPY 27,300 / month (development management fee JPY 9,800 + building management fee JPY 17,500) |
| Reserve Fund | JPY 34,730 / month (development reserve fund JPY 2,240 + building reserve fund JPY 32,490) |
| Other Monthly Fees | Internet facility usage fee JPY 858 / month, neighbourhood association fee JPY 100 / month |
| Parking | On-site parking available, JPY 14,000–20,000 / month (as of August 2026) |
| Management | Fully outsourced (daytime staff) |
| Occupancy | Vacant |
| Handover | Immediate |
Areas are the figures from the listing material and remain subject to verification against the register.
The building stands at 4-21-14 Shimomaruko in Ota-ku. Shimomaruko Station, on the Tokyu Tamagawa Line, is approximately 9 minutes on foot.
Shimomaruko Park is approximately 80 m away, with a 7-Eleven approximately 280 m and an Olympic supermarket approximately 320 m, according to the listing material.
The map indicates the location of the building. Walking times above are as stated in the listing material.
Open in Google MapsIn the At Home – Sumitomo Mitsui Trust Research Institute Mansion Rent Index for Q1 2026, the family-type index for Tokyo’s 23 wards — units of 60 to under 100 sq m, the band this 97.29 sq m residence falls into — rose approximately 12.3% year on year.
In the Reiwa 8 (2026) Official Land Price Survey, residential land in Ota-ku rose 7.9% on the previous year. The Ministry of Land, Infrastructure, Transport and Tourism’s Real Estate Price Index puts condominium prices in Tokyo at 234.8 for December 2025 against a 2010 average of 100 — a rise of approximately 9.6% on the same month a year earlier.
These figures describe the named ward and Tokyo as a whole, not this individual property. The rent index covers quality-adjusted contracted rents for condominium-type buildings generally, not this address; the land figure is an average across all official reference points in the ward, not an appraisal of this address; the price index is a nationwide statistical series for Tokyo. None of them guarantees future rent, value or performance.
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