February 28, 2026
By the HalfKey team
Tokyo lodging licenses: minpaku vs ryokan vs residential
Three regulators stand behind every Tokyo nightly rate: the city's minpaku registry, the hokenjo's ryokan-gyō-hō desk, and ordinary residential law. The license your building holds decides what nights it can sell and at what price. Most operators pick one tier and live inside it.
The 30-night minimum on most Tokyo monthly mansions is not a preference. It is the line where Japanese residential law swaps for hotel law. Below 30 nights, a building needs a hotel-class license under 旅館業法 (ryokan-gyō-hō — the Inns and Hotels Act). It can also operate under 民泊 (minpaku — "private lodging," the 2018 home-sharing registry). At 30+ nights, the unit is residential. Three regulators stand behind those tiers. Each decides what an operator can sell, how often, and at what per-night rate.
Most buildings pick one tier and have to honor it. So when an operator says no to your 27-night booking, the building's paperwork is the reason. The same physical address can show up under different licenses at different per-night rates, listed by different operators. That's how the Tokyo short-stay market is set up. Knowing which tier you're looking at tells you why the price is what it is.
Start with minpaku. The minpaku scheme is the Housing Accommodation Business Act of 2018, 住宅宿泊事業法 (jūtaku shukuhaku jigyō-hō). It lets a residential building accept paying guests for short stays, but caps the operator at 180 nights per calendar year per unit. Registration is with the city. In Tokyo, it runs through the ward office. The operator gets a notification number searchable on the national Minpaku Information System. A compliant minpaku listing shows that number on the page, typically prefixed M followed by digits.
The 180-night cap is the rule that shapes everything else. An operator running a minpaku unit can sell only half of the year as nightly stays. The remaining 185+ nights have to be either residential rentals or empty. So minpaku per-night rates have to recover full unit costs across roughly 180 sellable nights. Take a unit that costs ¥150,000/month to operate (rent, utilities, platform fees). It needs to make about ¥10,000/night across 180 nights just to break even, before paying staff. Real Tokyo minpaku rates run ¥12,000 to ¥22,000/night for a 22m² studio, depending on ward and walking distance to a JR station.
Then there is ryokan-gyō-hō. This is the older, heavier license: full hotel-class regulation, with no 180-night cap. The hokenjo (保健所 — "health office," the public health authority that licenses lodging buildings) inspects the building before issuing the license and on a recurring basis afterward. Fire-safety equipment is on hotel code, not residential code. The operator files revenue and occupancy reports to the city. There is no annual sellable-night ceiling, so a ryokan-licensed unit can run 365 nights as nightly inventory.
The trade is overhead. A ryokan-licensed building carries fire-system maintenance contracts (sprinklers, emergency lighting, multilingual signage), recurring inspection costs, and insurance premiums tuned to lodging risk. Per-night rates for mid-segment Tokyo studios under this license typically sit ¥15,000 to ¥28,000. Cleaning fees run ¥5,000 to ¥12,000 per stay. Operators pay the overhead because they're not capped at 180 nights.
Residential is the third tier. HalfKey runs in it. No special license is required. The unit operates under Japanese tenancy law, with a 定期借家契約 (teiki shakuya keiyaku — "fixed-term lease," a contract that ends on a stated date with no automatic renewal). The legal floor is 30 nights. That's the threshold between "lodging" and "residence" under local ordinances. The building has no hokenjo file. The ward does not get involved. Building management is residential, not hotel. Per-night equivalents are lower because the operator isn't paying licensing overhead. A furnished mid-term studio in Suginami or Setagaya prices around ¥165,000 to ¥230,000 for 30 nights all-in. That works out to ¥5,500 to ¥7,700 per night.
The same physical unit can show up under any of these three licenses, depending on who holds the paperwork. A 22m² studio in Nakano, three minutes from the station, can be licensed as ryokan and sold by a hotel operator at ¥18,000/night. The unit next door, identical floor plan, can be a minpaku at ¥14,000/night with a 180-night annual ceiling. The unit upstairs can be residential, sold by a monthly mansion operator like Sakura House across a 30-night stay. The per-night rate works out to roughly ¥6,500. None of those operators is wrong about the price. They're working under three different sets of rules.
Reading a listing's tier from its language is straightforward once you know the cues. A Tokyo listing that says "30 nights minimum" or "monthly only," with no mention of a license number, is residential. A listing that displays a minpaku registration number (typically "M" plus digits) and offers stays from 1 night up to a per-year cap is minpaku. A listing that says ホテル業法届出済 ("hotel act registration filed"), or shows "guest house," "hostel," or "hotel" in the operator's company name, with no annual ceiling, is ryokan. Airbnb tags the registration class on the listing page; Booking.com and Agoda surface "hotel-licensed" properties under separate filters.
The pricing comes out of these rules once you see them.
How the minpaku math works. With a 180-night ceiling, the operator has roughly 185 unsellable nights. They cover unit rent, utilities, and platform fees across only 180 sellable nights, and pay cleaning costs every stay. Average stay length in Tokyo minpaku is about 2.5 nights, so a 180-night calendar produces roughly 72 cleanings per year. At ¥6,000 cleaner cost per turn, that's ¥432,000/year just in cleaner labor before any operator margin. Per-night rates have to cover this. They run ¥4,000 to ¥10,000/night above residential equivalents for similar floor plans.
How the ryokan math works. The 365-night calendar improves things but the overhead is real. Hokenjo inspection cycles cost the operator several thousand yen per year per unit in staff time on inspection paperwork. Fire-safety equipment maintenance contracts for a small ryokan run ¥40,000 to ¥100,000/year per building. Insurance premiums sit higher than residential by ¥10,000 to ¥30,000/year per unit. A ryokan operator at ¥18,000/night on 270 occupied nights produces ¥4.86 million gross per unit per year. That's enough to cover the overhead and pay staff who handle 1-night turns.
How the residential math works. No licensing overhead. The operator's costs are sublease rent (see master-lease structure separately), one cleaner per stay at ¥18,000, platform fees, and English-speaking support. Stays are long; a 30-night stay produces one cleaning, not twelve. The business depends on keeping the apartment full, not on charging high nightly rates. Get the unit to 80%+ occupancy on 30+-night stays and the math works out.
This is why the operator's no, when it comes, isn't personal. It's about the license. A residential operator cannot legally take a 27-night booking. The ward office reads stay lengths off paperwork. A 27-night stay in a residential-licensed unit is a hotel-act violation. Article 10 of ryokan-gyō-hō sets fines up to ¥1 million per offense. The operator's compliance officer reviews the booking calendar. Repeated short stays would lose them the building. The 30-night floor exists because their license requires it, not because they prefer long stays.
If you want 27 nights in Tokyo, look for a minpaku or ryokan unit. Search Airbnb with the Japanese-license filter on. Or filter Booking.com to "hotel-licensed apartment-style." Expect a ¥4,000 to ¥10,000 per-night premium over the equivalent residential 30-night rate. The operator running that unit is paying down different costs under a different license. If that premium makes 30 nights at the residential rate look better, ask the residential operator to extend by 3 nights. They almost always will.
— HalfKey runs furnished Tokyo residential apartments for stays of 30 days to 12 months. Browse listings for your dates.