Monthly mansions (マンスリーマンション) — fully furnished rental apartments available without a long-term lease, typically from one week to several months — are Japan’s most practical accommodation solution for new arrivals, people between leases, those on extended work assignments, and anyone testing a new neighborhood before committing to a standard contract. Understanding the monthly mansion market, what it offers, and how it differs from standard rental and hotel accommodation is essential knowledge for anyone planning to spend more than a few weeks in Japan.
This guide draws on professional knowledge of Japan’s accommodation market from a registered travel business manager perspective. Prices are 2025–2026 market observations.
What Is a Monthly Mansion?
A monthly mansion is a furnished apartment rented by the month (or shorter) with all utilities (electricity, gas, water, internet) included in the monthly fee. Unlike standard Japanese rental apartments, there is no key money (礼金), no multi-month security deposit, no guarantor requirement, and no agency fee. The apartment comes equipped with bed/futon, refrigerator, washing machine, microwave, cookware, cutlery, and basic cleaning supplies. Move in with a suitcase and start living immediately. This frictionless entry is the primary value — a standard Japanese rental apartment requires 4–6 months’ rent upfront in deposits and fees before you can move in.
Major Operators
Oakhouse is Japan’s largest share house and monthly mansion operator, with properties throughout Tokyo and major cities. Strong English support and foreigner-friendly application process. Leo Palace 21 operates nationwide furnished apartments; English-language contracts available; widely used by foreign workers on company relocation. Sakura House specialises in foreigner-friendly furnished rooms and share houses in Tokyo, Osaka, and Kyoto; well-established English application system. Weekly Mansion Tokyo and similar operators focus on shorter stays from 1 week. Retro Mansion and smaller local operators often provide more characterful older apartments at lower rates than the major chains.
Cost Structure
Monthly mansion pricing is all-inclusive (rent + utilities + furniture + internet) but reflects this convenience premium. Typical Tokyo rates for a 1K (studio with separate kitchen, approximately 20–25m²):
- Central areas (Shinjuku, Shibuya, Minato): ¥120,000–¥180,000/month all-inclusive
- Mid-range areas (Setagaya, Meguro, Bunkyo): ¥95,000–¥140,000/month
- Outer central (Nakano, Koenji, Kita, Adachi): ¥75,000–¥110,000/month
Compared to standard rental: a similar unfurnished apartment in the same area might cost ¥70,000–¥100,000/month in base rent, but initial costs (key money, deposit, agency fee, furniture, utility setup) total ¥400,000–¥700,000. For stays under 6 months, monthly mansion is almost always more economical in total cost.
Weekly Mansion: The Short-Stay Option
Weekly mansions (ウィークリーマンション) follow the same model but rent from 7 days upward. These are used extensively by business travelers, people attending short-term language courses, and prospective residents on reconnaissance trips. Rates are higher per month than monthly mansion rates but lower than hotel rates for equivalent space. A week in a weekly mansion near Shinjuku typically costs ¥35,000–¥65,000 all-inclusive — comparable to a mid-range business hotel but providing a kitchen, washing machine, and the ability to actually live rather than just sleep.
Application Process for Foreigners
The monthly mansion application process is significantly simpler than a standard Japanese rental for foreign nationals. Most major operators (Sakura House, Oakhouse) accept applications with: a copy of your passport, a Japanese phone number (can be obtained at airport on arrival), and upfront payment by credit card or bank transfer. No Japanese guarantor is required. Applications can often be completed entirely online before arrival in Japan; keys collected at a staffed office or via key box on the day. The process takes 1–5 business days from application to move-in.
Practical Tips
- Book 2–4 weeks ahead: Popular properties in central areas fill quickly; last-minute availability exists but choice is limited
- Check internet speed: Monthly mansion internet is typically shared fiber — ask the operator about typical speeds; some older properties have slow connections unsuitable for video calls or remote work
- Laundry: Most monthly mansions include a washing machine; confirm before booking if a dryer is available (many Japanese apartments have none — line drying on the balcony is standard)
- Minimum stay: Most monthly mansions require a 30-day minimum; some weekly mansion operators allow 7-day minimum. Confirm the policy before booking
- Extension flexibility: Confirm that month-to-month extension is available without penalty — this flexibility is the core value of the format