A coastal-town minpaku we reviewed in 2026 advertised a ~21% headline yield on a ~¥40M asking price. The seller's own disclosure materials showed a real net yield near 3.5% — before loan, repairs, and insurance. The gap was not fraud; it was how Japanese portals define "yield." Here is how to read short-term-rental numbers before you buy.
TL;DR
This is a case study of a real income property we evaluated and passed on — anonymized so it cannot be identified. It was a 1990s wood-frame building of eight small units in a coastal town in Kanagawa, about an hour from Tokyo, marketed at a ~21% "surface yield." Working through the seller's own disclosed profit-and-loss took that number to roughly 3.5%. The lesson is not "avoid minpaku" — it is that the portal number and the money you keep are two completely different figures, and the second one is knowable before you make an offer. For the regulatory backdrop, start with the minpaku rules guide; this article is about the numbers.
How do Japanese property portals calculate "headline yield"?
Almost every income-property listing in Japan leads with a surface yield (表面利回り). The formula is deliberately simple:
表面利回り = assumed annual income ÷ asking price
That is the entire calculation. It assumes zero operating expenses and full occupancy for the year. For a conventional long-term rental, the assumed income is the sum of the contracted rents. For a short-term rental, the "assumed annual income" (想定年間収入) is a projection — typically a best-case nightly rate multiplied by an optimistic occupancy — with no deduction for management, cleaning, utilities, consumables, vacancy, or the platform's cut.
The figure most investors actually care about is the net yield (実質利回り), which subtracts real operating costs before dividing by an all-in acquisition cost:
実質利回り = (annual income − operating expenses) ÷ (price + acquisition costs)
The distance between the two is the whole story. For minpaku, that distance is unusually large, because short-term rental carries operating costs a long-term lease simply does not — daily-turnover cleaning, guest operations, and, for a non-resident owner, a licensed management company. For the general mechanics of separating gross from net, see the cap rate and yield metrics guide and how to assess fair value of Japanese property. None of this makes a ~21% surface-yield listing dishonest — it is simply reporting a different number than the one that lands in your account.
What did the actual P&L of this minpaku listing look like?
The property, in general terms: a 1990s wood-frame (木造) two-story building of eight 1K units in a coastal town in Kanagawa, roughly an hour from Tokyo. Seven units were described as operating as short-term lodging (簡易宿所); one unit was on a conventional lease at ¥43,000/month including common charges. The listing had been on the market for about ten months and was flagged as a motivated ("early") sale.
Here is what the portal showed:
| Portal figure | Value |
|---|---|
| Asking price | ~¥40,000,000 |
| Assumed annual income (想定年間収入) | ~¥8,500,000 |
| Surface yield (表面利回り) | ~21% |
| Time on market | ~10 months (motivated sale) |
Here is what the seller's own disclosure materials showed for the most recent full year of actual operation:
| Line item (most recent full year) | Amount |
|---|---|
| Short-term rental revenue (7 units) | ~¥5,300,000 |
| Long-term rent (1 unit @ ¥43,000/mo) | ~¥520,000 |
| Total actual revenue | ~¥5,800,000 |
| Operation/management, utilities, consumables | −¥4,200,000 |
| Fixed asset tax (固定資産税) | −¥50,000 |
| Off-site parking | −¥140,000 |
| Net before financing, repairs, insurance | ~¥1,400,000 |
| Actual net yield on asking price | ~3.5% |
Two things stand out. First, actual revenue (¥5.8M) came in well below the assumed income (¥8.5M) — the projection assumed occupancy and rates the building was not achieving. Second, once real operating costs were removed, the ~21% surface yield became a ~3.5% net yield — and that is still before mortgage payments, a repair/maintenance reserve, and lodging-operator insurance. For a wood-frame building from the 1990s, none of those three are optional. This is exactly the "attractive gross, modest net" pattern documented across markets in the minpaku ROI by city analysis and the rental yields by area guide.
Why did management and operating costs consume 60% of revenue?
Because for a non-resident owner, hands-on operation is not on the table — and small, low-rate units are the worst case for operating economics.
The legal driver. Under the 住宅宿泊事業法, an owner who does not live at or near the property must engage a registered 住宅宿泊管理業者 (licensed lodging-management operator); the 旅館業法 frameworks similarly require a designated local contact reachable around the clock. A non-resident cannot self-manage, so the operator's fee is a structural cost, not something to negotiate away. This obligation is covered in the minpaku rules guide and, in operating detail, in the real work of running a minpaku.
Why 60%, not the "15–25%" you read about. The commonly quoted 15–25% is a management fee on a single, decent-ADR unit. This property was different in two ways that both push the ratio up:
- It was a full 運営代行 (turnkey operation) arrangement across eight small units, bundling guest operations, cleaning turnovers, and consumables — not a lean management-fee-only deal.
- The units were low-ADR 1K rooms in a regional coastal town. Cleaning and per-turnover costs are largely fixed per stay, so when the nightly rate is low, those fixed costs eat a much larger share of each booking than they would on a high-rate city unit.
The disclosure bore this out. In the following nine months, short-term revenue grew to about ¥5,000,000, but operating costs rose to roughly ¥4,400,000 — of which the lodging-operation fee alone was about ¥3,000,000, or ~60% of revenue. Higher revenue did not fix the model, because the cost base scaled with it. This is the mechanism that turns headline yield into net yield, and it is why the operations guide treats management as the single most important number in a minpaku pro forma.
Is there an exit if short-term rental stops working?
Yes, and the seller had already modeled it: convert every unit to a conventional long-term lease.
On the seller's own estimate, eight units at ¥43,000/month is about ¥4,100,000 per year — a surface yield of roughly 10% on the ~¥40M price. That is less than half the advertised short-term number, but it is a far more honest starting figure: no daily turnovers, no lodging operator taking 60%, no 旅館業 compliance to maintain. Note, though, that the ~10% is still a surface yield — after long-term management (typically ~5%), realistic vacancy for small units in a regional town, and a maintenance reserve for a 1990s wood-frame building, the net would land meaningfully lower.
The conversion exit also depends on long-term rental demand actually existing in the specific town, which is a separate question from tourist demand. A coastal location that works for weekend short stays does not automatically have a deep pool of year-round tenants. If you are underwriting the "just convert it to rental" backstop, price the building on that ~10%-surface / lower-net basis — not on the ~21% headline — and confirm local rental absorption before you rely on it. Coastal siting also raises a hazard question addressed in the checklist below and in the coastal-property tsunami risk guide.
Does the hotel license transfer to the buyer?
Not automatically — and this was the single biggest open question in the file.
A 旅館業法 permit (including the 簡易宿所 category) attaches to the operator and facility that were approved, and a straightforward sale of the building to a new owner does not carry the license across on its own. In general, the buyer should expect that prefecture-level (保健所) approval or a fresh application is required to operate lawfully after the transfer. Succession rules differ by situation and prefecture, so the operable assumption for underwriting is: the right to operate does not come free with the deed. (We could not confirm an official published procedure name for this specific prefecture at the time of review, so we treated it as "prefecture-level approval required" rather than assuming automatic transfer.)
Two disclosure gaps reinforced the caution, stated neutrally as what we could and could not verify from the materials:
- The management contract on file was written under the 住宅宿泊事業法 (the 180-day-capped framework) and covered five units — not the seven described as operating, and not the day-unlimited 旅館業 basis a "simple lodging" operation implies. The 180-day ceiling and how the frameworks differ are explained in the 180-day cap guide.
- The 旅館業 permits for the seven units said to be operating could not be located in the disclosure materials. That is not evidence they do not exist — only that a buyer would need to see them before relying on the seven-unit revenue.
For a non-resident buyer, an income figure you cannot tie to a verified operating permit is not yet income you can underwrite.
What should you ask the broker before making an offer?
The pattern in this case — an eye-catching surface yield, a projection well above actuals, and unverified permits — is common enough that it is worth a fixed checklist. Ask for each of these in writing before you commit:
- The nature of the income, and 24 months of actuals. Is each figure nightly-rate revenue or contracted rent? Get at least two years of realized numbers (many properties are seasonal), not a one-line "assumed annual income."
- A P&L with expenses included, not just revenue. Management/operation fees, cleaning per turnover, utilities, consumables, insurance, property tax, and any parking — so you can compute a real net yield.
- The operator contract and its fee. Who runs it, under what agreement, and at what percentage? Confirm whether it is a lean management fee or a full 運営代行 arrangement.
- How many units are actually operating — and how that reconciles with the marketed unit count and the assumed income.
- The operating permits and whether they transfer. 旅館業 or 住宅宿泊 registration for each operating unit, and written confirmation of what a change of owner requires (assume prefecture/保健所 approval unless proven otherwise).
- Building age and the 検査済証 (certificate of inspection). Especially for a wood-frame 1990s structure — confirm construction standard, and whether the completion/inspection certificate exists.
- Hazard, repair history, and fixed asset tax. For a coastal property, check the municipal tsunami and storm-surge hazard maps as a matter of course; request the repair/maintenance history and the actual 固定資産税 amount.
Work these in the same disciplined way as the general property due diligence checklist — the difference for minpaku is that items 1–5 (income quality, operating costs, and permits) are where the value gap hides. For the full pre-purchase version of these checks — condo bylaws, zoning, fire code, license transferability, and how to verify a seller's ADR and occupancy claims with primary records — work through the minpaku-specific due-diligence checklist before you make an offer. It is the action list that this case study is the argument for.
If you want to pressure-test a specific short-term-rental listing, the most useful next step today is understanding the management obligation that drives these numbers: see the management-company section of the minpaku rules guide and the full cost breakdown in the real work of running a minpaku.
Frequently Asked Questions
What is the difference between surface yield and net yield in Japan?
Surface yield (表面利回り) is assumed annual income divided by the asking price, with no expenses deducted and full occupancy assumed — it is the number most Japanese property portals display. Net yield (実質利回り) subtracts real operating costs (management, cleaning, utilities, taxes, insurance, vacancy) and divides by the all-in acquisition cost. For short-term rentals the two diverge sharply because minpaku carries operating costs a long-term lease does not. In the case above, a ~21% surface yield corresponded to roughly a 3.5% net yield before financing, repairs, and insurance.
Why would a minpaku's management cost 60% of revenue?
Two reasons compounded in this case. First, a non-resident owner cannot self-manage, so a licensed operator is effectively mandatory. Second, the property was eight small, low-nightly-rate units run under a full turnkey (運営代行) arrangement. Cleaning and per-turnover costs are largely fixed per stay, so on low-rate units they consume a far larger share of revenue than the commonly quoted 15–25% management fee, which applies to a single higher-ADR unit. Here the operator's fee alone was about ¥3.0M against ~¥5.0M of revenue.
Does a Japanese hotel or minpaku license transfer to the buyer automatically?
No. A 旅館業法 permit (including the 簡易宿所 category) attaches to the approved operator and facility; a straightforward sale of the building does not carry it across by itself. A buyer should generally expect that prefecture-level (保健所) approval or a fresh application is required to operate after the transfer, and should confirm the exact requirement before underwriting any short-term-rental income. Always verify that operating permits exist for every unit that is generating the advertised revenue.
Is converting a minpaku to long-term rental a reliable exit?
Sometimes, but only if year-round tenant demand actually exists in that specific location and you price the building on the conversion numbers rather than the short-term headline. In this case the seller estimated about ¥4.1M/year (a ~10% surface yield) if all eight units were leased conventionally — less than half the advertised minpaku figure, and lower still after long-term management, vacancy, and a maintenance reserve. Tourist demand for short stays does not guarantee a deep pool of long-term tenants.
Related Articles
- Minpaku Property Due Diligence: A Foreign Investor's Checklist →
- Japan Minpaku Rules 2026: What Foreign Investors Must Know →
- The Real Work of Running a Minpaku: Costs & Management →
- Minpaku 180-Day Cap: Legal Paths to 365-Day Operation →
- Minpaku ROI 2026: Realistic Yields by Japanese City →
- How to Assess Fair Value of Japanese Property →
- Japan Rental Yields by Area: Government Data Analysis →
- Japan Property Due Diligence Checklist: 15 Items →
- Tsunami Risk for Coastal Property in Japan →
Disclaimer
This article is a case study based on a single income property we reviewed in 2026 and declined to pursue. Identifying details have been removed and all figures rounded; it does not describe any specific, identifiable listing, seller, or broker. Amounts are drawn from the seller's disclosure materials as we understood them and are provided for general educational purposes only — they are not a representation about any current property on the market. Nothing here is legal, tax, or investment advice. Short-term-rental licensing, the 住宅宿泊管理業者 obligation, and succession of 旅館業 permits vary by prefecture and change over time. Always verify current requirements with the relevant municipality and 保健所 and consult qualified Japanese professionals before acquiring or operating a short-term rental property.