1K Apartments in Tokyo for Rent: 2026 Ward Guide

1K apartments in Tokyo for rent are the most common rental unit type in the city — and the source of the most confused searches. “1K apartment Tokyo” drives over 2,500 impressions per week in search results, but most searchers are looking at listings on page two or three because existing content covers 1K alongside 1DK and 1LDK without going deep on the 1K specifically.

This guide is specifically about 1K apartments: what the layout means in practice, which wards offer the best value at this layout type, how pricing varies across the 23 wards, and what foreign renters need to know about applying. For 1DK and 1LDK specifics, the 1-bedroom apartment in Japan guide covers all three layouts with broader comparison. For wards under ¥70,000/month across all layout types, see cheap apartments in Tokyo.

Browse current 1K listings in Tokyo on Arealty — filtered by layout, ward, and foreigner acceptance.

Table of Contents

What a 1K Apartment for Rent in Tokyo Actually Is

The K in 1K stands for Kitchen. A 1K apartment has one main room plus a separate kitchen area. The kitchen must be at least 4.5 tatami mats (approximately 7.5 sqm) in size to be classified as K rather than the smaller R (room) designation.

In practice, a 1K means: you have a separate kitchen — small, but walled off from the main living/sleeping space. This is significant because cooking smells do not permeate your bedroom and living area, and you have a defined sleeping space separate from your kitchen.

Total floor area for a Tokyo 1K typically runs 18–28 sqm. The main room (寝室 or 居室, the bedroom/living room) is usually 6–8 tatami mats (10–13 sqm). The kitchen takes up 7.5–10 sqm. There may or may not be a separate toilet from the shower (セパレート is separate; ユニットバス is combined). Whether there is a balcony varies by building.

1K Apartment Kitchen, Sleeping Area, Balcony, Desk.

1K vs. 1DK vs. 1R — The Practical Difference

Layout	Kitchen size	Separation	Typical area	Best for
1R (1 Room)	Under 4.5 tatami — open to main room	None	13–20 sqm	Minimum cost, very small space
1K	4.5+ tatami, walled kitchen	Yes	18–28 sqm	Solo renters wanting cooking separation
1DK	4.5+ tatami + dining area	Yes, plus dining	25–40 sqm	Solo renters wanting full dining-kitchen space
1LDK	Full living + dining + kitchen	Yes, full LDK	35–55 sqm	Couples, solo renters wanting full living space

A 1K is the most common layout for single foreign renters in Tokyo because it balances cost (lower than 1DK/1LDK) with liveable separation (more practical than a 1R studio where your bed is 2 metres from your stove). For the 1DK, 1LDK and layout comparison in full, see the 1-bedroom apartment in Japan guide.

1K Apartment Rents by Ward — 2026 Data Table

Based on Arealty’s analysis of 26,874 active listings as of May 2026 (median figures, minimum 80 listings per ward):

Ward	1K median rent	Zone	Notes
Katsushika	¥56,000	Outer east	Cheapest 1K in Tokyo
Nerima	¥64,700	Outer north/west	Greenest ward, Seibu Line
Adachi	¥68,000	Outer north	Budget belt north
Edogawa	¥70,000	Outer east	Nishi-kasai Tozai Line access
Itabashi	¥72,000	Outer north	Undervalued transit access
Kita	¥73,000	North	Keihin-Tohoku Line
Arakawa	¥74,000	North-east	Shitamachi character
Nakano	¥82,000	Mid-west	5 min to Shinjuku
Suginami	¥78,000	West	Chuo Line, Koenji
Toshima	¥82,000	North-central	Ikebukuro hub
Bunkyo	¥88,000	North-central	Academic ward, underpriced
Koto	¥86,000	East-central	Toyosu waterfront
Sumida	¥82,000	East-central	Asakusa, Ryogoku
Meguro	¥97,000	South-west	Nakameguro, premium
Ota	¥88,000	South	Haneda access, Denenchofu
Setagaya	¥90,000	South-west	Largest ward, expat popular
Shinagawa	¥95,000	South	Shinkansen access
Shibuya	¥115,000	Central	Daikanyama, Harajuku
Shinjuku	¥100,000	Central	Takadanobaba, Yotsuya
Chuo	¥105,000	Central	Tsukiji, Ginza adjacent
Chiyoda	¥110,000	Core central	Business district
Taito	¥83,000	North-east central	Asakusa, Ueno — underpriced
Minato	¥119,000	Core central	Highest rents in Tokyo

The ¥2.6× spread between Katsushika (¥56,000) and Minato (¥119,000) reflects Tokyo’s rent geography. Five factors drive this: Yamanote Line proximity, land scarcity, building age mix, foreigner-acceptance infrastructure, and new residential development in eastern wards. For a full analysis of what drives these differences, see the average apartment rent in Tokyo guide.

1K Apartments Tokyo: Best Wards for Foreign Renters by Budget

Under ¥70,000/month for a 1K: Katsushika, Nerima, Adachi, Edogawa. All are 30–45 minutes from central Tokyo but serviced by major rail lines. The cheap apartments Tokyo guide covers these wards in full with neighborhood-level detail.

¥70,000–¥85,000/month: Itabashi, Kita, Arakawa, Nakano, Suginami, Sumida, Taito. The strongest value-to-access band. Nakano (¥82,000 median, 5 min to Shinjuku) and Suginami (¥78,000, 8 min to Shinjuku on Chuo Line) are the standout picks for foreign renters prioritising central access. For Nakano specifically, see the Nakano apartments for rent guide.

¥85,000–¥100,000/month: Bunkyo, Koto, Toshima, Ota, Setagaya. Mid-range with distinct ward characters. Bunkyo is genuinely underpriced for its central-adjacent position (University of Tokyo, Hongo). Setagaya is Tokyo’s most popular long-term expat ward — see the Setagaya guide.

Over ¥100,000/month: Shibuya, Shinjuku, Chuo, Chiyoda, Minato. Premium access and premium price. For Shinjuku specifics, see the Shinjuku apartments for rent guide. For Shibuya, see the Shibuya guide.

Typical older apartment building exterior, Kita ward.

What to Check When Renting a 1K in Tokyo

Small apartments reveal issues that larger apartments conceal. When viewing or requesting a video walk-through of a 1K:

Kitchen ventilation: a 1K kitchen is small and enclosed. Poor ventilation means cooking smells permeate the main room despite the separation. Ask about the ventilation type and check that the range hood actually draws air out rather than recirculating it.

Bathroom type: セパレート (separate toilet and bath/shower) is significantly more comfortable than ユニットバス (unit bath — combined toilet and shower in one small unit). In a 1K, the bathroom takes up a disproportionate share of the unit’s function. Confirm which type before viewing, as photos frequently do not make this obvious.

Natural light direction: south-facing (南向き, minami-muki) units get good winter light. North-facing (北向き, kita-muki) can be dark and damp, especially in a 1K where the main room has only one window wall. First-floor units have less light and less privacy regardless of direction.

Wall thickness: pre-1981 wooden-frame (木造, mokuzou) buildings are more common at lower price points. Sound insulation between units is minimal — you hear neighbours. Reinforced concrete (RC) or steel-frame (鉄骨, tekkotsu) buildings have meaningfully better soundproofing.

For a full pre-application checklist, see the Japan apartment rental mistakes guide.

Foreigner and agent review 1K floor plan.

Foreigner Application Process for a 1K

The application process for a 1K is the same as any Tokyo apartment. Documents needed: residence card (在留カード), income proof, 2–3 months bank statements, and guarantor company application.

Income threshold for a 1K: the standard rule is monthly income ≥ 3× monthly rent. For an ¥80,000/month 1K, you need documented income of ¥240,000/month. For an ¥70,000/month unit, ¥210,000/month.

Working Holiday visa: accepted for 1K apartments in mid-range wards (Nakano, Suginami, Kita) by a meaningful portion of landlords. For the no-tax-document specific situation, see the WH no tax document guide.

First-time renters in Japan: the step-by-step foreigner rental guide covers the full process from document gathering to contract signing. For listing photos that may not show the actual unit, see why apartment photos in Japan differ from the real room.

Browse 1K apartments for rent in Tokyo on Arealty — filter by layout (1K), ward, and foreigner acceptance for current availability.