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Building exterior
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Building exterior

Selected images and diagrams are reproduced from the materials supplied for this listing.

1LDK
Layout
June 1983
Year Built
Approx. 3 min
To Nishi-Shinjuku Station (Marunouchi Line)
Vacant
Occupancy

Property Highlights

  • A fully renovated corner 1LDK of 31.78 sq m on the fourth floor of a seven-storey building in Nishi-Shinjuku
  • Nishi-Shinjuku Station approximately 3 minutes on foot, Shinjuku-nishiguchi Station approximately 6 minutes and Shinjuku Station approximately 8 minutes
  • New counter kitchen with dishwasher and water purifier, and a bathroom with dryer and reheating
  • Large-scale repair works to the building were carried out from February to May 2023, according to the listing material
  • Security cameras; office use may be discussed under the building rules

Property Description

Castle Mansion Nishi-Shinjuku is a seven-storey reinforced concrete building at 7-22-48 Nishi-Shinjuku in Shinjuku-ku, completed in June 1983 with 23 residences. This residence is a corner 1LDK of 31.78 sq m on the fourth floor.

The renovation, completed in September 2026, covers the kitchen, bathroom, washstand, toilet and water heater, along with new flooring, wall coverings, joinery and lighting, as shown in the photographs. The living, dining and kitchen space of approximately 8.4 jo opens onto a bedroom of approximately 4.1 jo, and the building has a lift and security cameras. Pets are not permitted.

Property Details

Property TypeResidential Condominium
Address7-22-48 Nishi-Shinjuku, Shinjuku-ku, Tokyo
Nearest StationNishi-Shinjuku Station (Marunouchi Line)
Walking DistanceApprox. 3 min
AccessShinjuku-nishiguchi Station (Toei Oedo Line) approx. 6 min; Shinjuku Station (JR Yamanote Line and other lines) approx. 8 min on foot
Layout1LDK
Building Area31.78 sq m
Floor4th Floor
Building Height7 Storeys
Building StructureReinforced Concrete, flat roof
Year BuiltJune 1983
RenovationFull renovation completed 18 September 2026 — kitchen, bathroom, washstand, toilet, water-heater (with reheating), flooring, wall coverings, joinery and lighting
Number of Units23 Units
TenureFreehold Ownership
Management FeeJPY 12,710 / month
Reserve FundJPY 8,121 / month
ParkingNone
ManagementFully outsourced, no caretaker (cleaning staff only)
OccupancyVacant
HandoverBy consultation

Areas are the figures from the listing material and remain subject to verification against the register.

Location, Transit & Everyday Convenience

The building stands at 7-22-48 Nishi-Shinjuku in Shinjuku-ku. Nishi-Shinjuku Station on the Marunouchi Line is approximately 3 minutes on foot, Shinjuku-nishiguchi Station on the Toei Oedo Line approximately 6 minutes, and Shinjuku Station, served by the JR Yamanote Line and many other lines, approximately 8 minutes.

A My Basket grocery store is approximately 2 minutes on foot, a FamilyMart convenience store approximately 3 minutes, an Olympic supermarket approximately 5 minutes and a dry cleaner approximately 6 minutes.

The map indicates the location of the building. Walking times above are as stated in the listing material.

Open in Google Maps

Shinjuku-ku Rental, Land and Price Trends

In the At Home – Sumitomo Mitsui Trust Research Institute Mansion Rent Index for Q1 2026, the compact-type index for Tokyo’s 23 wards — units of 30 to under 60 sq m, the band this 31.78 sq m residence falls into — rose approximately 5.6% year on year.

In the Reiwa 8 (2026) Official Land Price Survey, residential land in Shinjuku-ku rose 11.2% 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.

Year-on-year increases · Tokyo 23 wards, Shinjuku-ku and Tokyo
+11.2%
Residential Land, Shinjuku-ku
+5.6%
Rents, Compact-Type Apartments
+9.6%
Condominium Prices, Tokyo

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.

Sources:

Important Notes

  • Information is based on the materials supplied for this listing.
  • Availability, price and property details remain subject to confirmation.
  • Furniture shown in some photographs is staging only; the residence is not sold furnished.
  • Market data does not represent the value or future performance of this individual residence.
  • Property ownership in Japan does not by itself provide visa or residency rights.

Listing & Transaction Information

Type of Transaction
Brokerage
Listed by
International Interface Co., Ltd.
Tokyo Governor’s Licence (3) No. 96857
RE/MAX INTERFACE
Agent: Kenichi Aoki

Property availability, pricing, rental status and other details are subject to change without prior notice. A property may be reserved, withdrawn or sold before this website is updated. Please contact us to confirm the latest availability and obtain the current property documentation.

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