No Japanese government agency, and no private research body, publishes a "success rate" for real estate investment. The rules that actually work are not secret techniques. They are the habit of testing, before you sign anything, whether a property clears four numbers: after-tax cash flow, debt service coverage, yield gap, and exit price.
This article is written for readers outside Japan who are looking at Japanese residential income property. Japan is unusual among developed markets: it combines some of the cheapest long-term debt in the world with a shrinking population, a housing stock that depreciates toward zero on the building side, and a rental market where surplus supply is already measured in the millions of units. Those conditions make Japanese property genuinely attractive — and they make it easy to buy the wrong asset for the right-sounding reasons. Reading fifty case studies will not tell you what will happen to the specific building you are looking at, because the acquisition year, the interest rate at that time, and the location were all different. Below are the five rules that separate success from failure, applied separately to kubun manshon (区分マンション, a single owned unit inside a concrete condominium building) and ittō apāto (一棟アパート, an entire small apartment building owned outright). Even a first-time buyer should be able to run every calculation here using nothing but the documents already in hand.
Key takeaways
- No official statistic aggregates the success rate of real estate investment in Japan, so any advertised "X% success rate" has to be checked against its sample, its period, and its definition
- Success is something you define yourself, using four numbers: how much cash is left after tax each year, and what the property sells for, and when
- The Bank of Japan raised its policy rate to around 1.0% in June 2026 and held it there at the 31 July meeting — a stress test for a 1.0-point rate rise is now standard practice, not a pessimist's exercise
- Vacant units held for rent number 4,436,000 (4.436 million), which is 49.3% of all vacant homes in Japan — location must be judged by the structure of supply and demand, not by a neighbourhood's reputation
- Owning a single condominium unit and owning a whole apartment building are not variations on one strategy; the variables that decide success are fundamentally different
Can a "success rate" for real estate investment in Japan even be calculated?
The short answer is no: there is no published official statistic corresponding to a success rate for real estate investment in Japan. Search the data published by the 総務省 (Ministry of Internal Affairs and Communications, MIC), the 国土交通省 (Ministry of Land, Infrastructure, Transport and Tourism, MLIT), or the 国税庁 (National Tax Agency, NTA), and you will not find any figure aggregating how many people who started investing in property went on to succeed. So when you see "success rate: 92%" in an advertisement or a sales deck, you are much closer to reality if you assume the company defined the term itself and counted its own sample.
Why does no public body compile it? The reason is simple: success means different things to different owners. For someone who wants more cash in hand each month, success is one number. For someone using property to reduce the assessed value of an estate for 相続税 (sōzokuzei, Japanese inheritance tax) — a very common motive in Japan, where inherited real estate is valued for tax purposes well below its market price — success is a completely different number. For someone targeting a capital gain in ten years, it is a third. On top of that, the income and expenses of privately held income property appear only in individual tax filings, and there is no mechanism that tracks, across the market, who bought what, when, and at what price they sold. You cannot attach a statistical success rate to something whose definition and whose sample are both undefined.
This is a point where the Japanese market differs sharply from the United States or the United Kingdom. There is no Japanese equivalent of a nationwide MLS with public sold-price history for every transaction, and no equivalent of the UK Land Registry's openly searchable price-paid dataset covering every residential sale. Japan has a reliable registry of ownership — the 登記簿 (tōkibo, the real property register maintained by the Legal Affairs Bureau), which anyone can inspect for a small fee — but it records rights, mortgages, and encumbrances, not a clean, queryable transaction-price series. The practical consequence for an overseas buyer is that market-level performance data is thin, while property-level legal data is excellent. You should lean hard on the second and distrust anything presented as the first.
Some time ago, someone came to me and asked, "I was told the success rate is 92% — is that true?" Following the footnotes in the material, that 92% turned out to mean: "of the buyers of condominium units sold by this company, the proportion who had not sold within three years of purchase and therefore had not crystallised a loss." If you never sell, the loss is never realised. Nothing in the number was a lie. It was simply a different thing from what the reader assumed — the proportion of people making money.
Three things to check whenever you see "success rate: X%"
- The sample: Who was counted? Only the customers of one particular sales company, or investors nationwide? How were non-respondents treated?
- The period: From when to when? Has the window been cut to cover only a favourable phase — 2013 to 2021, say, when rates were low and prices rose continuously?
- The definition: What counted as success? Positive cash flow, a realised capital gain, or merely the absence of a sale?
A number that cannot answer those three questions is not decision material. There are, however, public indicators you can use instead. According to the 2023 Housing and Land Survey (令和5年住宅・土地統計調査) published by the Statistics Bureau of the MIC, there are 9,002,000 vacant homes nationwide and the vacancy rate reached a record 13.8%. Meanwhile MLIT's 2026 Land Price Publication (令和8年地価公示) shows a fifth consecutive annual rise across all uses, residential land, and commercial land at the national average. The market as a whole is rising while the stock of housing nobody wants to rent keeps growing. Holding those two facts side by side is far more useful in practice than chasing a single success-rate figure — and it is the central tension an overseas investor has to understand about Japan. Capital values are firm in a handful of metropolitan areas; occupancy risk is severe almost everywhere else.
Decision for this section: Strike "success rate" — somebody else's number — from your decision criteria. From the next section on, you redefine your own success conditions using four figures.
Rule 1 | Replace the definition of success with four numbers
Investing successfully in Japanese property starts by converting the feeling of "this looks profitable" into four numbers. Until all four are filled in, a property cannot be judged good or bad — it cannot be judged at all. Note that the first three are the same metrics an institutional underwriter would use anywhere in the world; what changes in Japan is the inputs, particularly the exit assumption, because Japanese buildings are conventionally valued as a depreciating asset sitting on land that holds its value.
| Metric | Formula | What it tells you | How to think about the benchmark |
|---|---|---|---|
| After-tax cash flow | Rental income − (operating expenses + principal and interest + income tax and resident tax) | The cash that genuinely stays in your hand | Decide for yourself how much must remain per year, per unit, for you to keep holding |
| DSCR (debt service coverage) | Annual NOI ÷ annual principal and interest | How far the rent covers the loan | Below 1.0 you are funding the loan out of pocket. I use 1.3 or above as my benchmark |
| Yield gap | Net yield − borrowing rate | The margin leverage actually adds | If this is thin, a rate rise flips the deal instantly |
| Exit price | Assumed NOI ÷ assumed cap rate | What it will be worth when you sell | Whether it exceeds the loan balance determines whether you can walk away |
The DSCR level of 1.3 is not a legal or regulatory standard. It is the benchmark we use when we take a building under management, set from experience as roughly the buffer needed to avoid dipping into your own pocket when a major repair cycle and a run of rent arrears land in the same year. The right level differs for every reader depending on their own equity and their income from their main occupation. Readers used to US or Australian lending will recognise the concept; the difference is that Japanese lenders rarely impose a DSCR covenant on an individual borrower, so nobody will enforce this discipline on your behalf. You have to impose it on yourself.
Before calculating the four metrics, one convention matters: read yield as net, never as gross. In Japan, listing sheets almost always quote 表面利回り (hyōmen rimawari, gross yield) — annual rent at full occupancy divided by the purchase price. That figure excludes the management fee, the 固定資産税 (kotei shisanzei, fixed asset tax), electricity for common areas, the brokerage commission, and the 登録免許税 (tōroku menkyozei, registration and licence tax) paid on acquisition. Net yield is (annual rental income − annual operating expenses) ÷ (purchase price + acquisition costs). Simply subtracting operating expenses from the numerator and adding acquisition costs to the denominator routinely turns a property advertised at 8% gross into something under 6% net. Overseas readers should be aware that Japanese acquisition costs are heavier than in many markets — brokerage, registration tax, judicial scrivener fees, stamp duty, and the 不動産取得税 (fudōsan shutokuzei, real property acquisition tax) that arrives months after closing typically total around 7% of the price for an existing building. The arithmetic is set out with worked formulas in the difference between net and gross yield and what benchmarks to use.
NOI (net operating income) is annual rental income less operating expenses. Operating expenses include the management fee, water and electricity for common areas, cleaning, routine repairs, fixed asset tax and city planning tax, and fire insurance. Loan payments and depreciation are deliberately excluded: financing terms differ for every buyer, and depreciation is a tax computation rather than a cash cost. Using NOI as the common yardstick is the only way to compare one property with another on equal terms — and it is also the language a Japanese bank's credit department will speak when it assesses the asset.
Decision for this section: Fill in all four numbers for the property you are considering. If even one field is still blank, treat that as a documentation shortfall rather than an analytical judgement. A sales flyer will never fill them. Request the rent roll (レントロール, the schedule of units, tenants, rents and lease expiry dates), the past twelve months of actual operating expenses, and the fixed asset tax assessment notice, and only then run the numbers again.
Rule 2 | Run the stress test against 2026 interest rate assumptions
On 16 June 2026, the Bank of Japan raised its target for the uncollateralised overnight call rate to around 1.0%. The same decision moved the basic loan rate under the complementary lending facility to 1.25%. At the following Monetary Policy Meeting on 31 July, the Board voted 8 to 1 to hold at around 1.0%. For readers outside Japan, the significance is easy to underestimate: this is the end of an era in which Japanese borrowers could reasonably assume rates would never move. Japan spent roughly a quarter of a century at or below zero, and an entire generation of Japanese landlords has never operated a floating-rate loan in a tightening cycle. If your plan assumes a floating rate — as the great majority of Japanese property loans do, unlike the 30-year fixed norm in the United States — the projection has to include a recalculation for a higher rate.
What you run is a simultaneous three-point stress. Interest rates, occupancy, and rents tend to deteriorate together rather than one at a time, so you apply all three at once rather than sequentially.
- Add 1.0 point to the interest rate and recalculate the annual payment (keeping the loan balance and remaining term unchanged)
- Cut the occupancy rate by 10 points (if the projection assumes 100% occupancy, calculate at 90%)
- Cut rents by 5% (assuming asking rents are revised down and renewals are negotiated lower)
- Apply all three conditions simultaneously and recalculate NOI and DSCR
- Confirm that pre-tax cash flow can still absorb the year's expected repair costs and any increase in fixed asset tax
Numbers make this quicker to grasp. Take a model case: a 22-year-old wooden-frame apartment building in Osaka City. (Wooden-frame construction, 木造 or mokuzō, is the standard for small Japanese apartment buildings — a point that surprises many overseas investors accustomed to masonry or concrete low-rise stock, and one that has direct consequences for both depreciation and loan tenor, as Rule 5 explains.) Assume a price of ¥50 million (approx. USD 333,000 at roughly ¥150 = USD 1 in mid-2026), acquisition costs of ¥3.5 million (approx. USD 23,000), equity of ¥8.5 million (approx. USD 57,000), and a loan of ¥45 million (approx. USD 300,000). The loan is floating at 2.0% over 30 years, annual rent at full occupancy is ¥4 million (approx. USD 27,000), and operating expenses are set at 20% of rent, or ¥800,000 (approx. USD 5,300).
| Item | Base case | After simultaneous three-point stress |
|---|---|---|
| Annual rental income | ¥4,000,000 (approx. USD 27,000) | ¥3,420,000 (approx. USD 22,800) — 90% occupancy, rents down 5% |
| Operating expenses | ¥800,000 (approx. USD 5,300) | ¥800,000 (approx. USD 5,300) |
| NOI | ¥3,200,000 (approx. USD 21,000) | ¥2,620,000 (approx. USD 17,500) |
| Annual principal and interest | approx. ¥2,000,000 (approx. USD 13,300) at 2.0% | approx. ¥2,280,000 (approx. USD 15,200) at 3.0% |
| DSCR | 1.60 | 1.15 |
| Pre-tax cash flow | ¥1,200,000 (approx. USD 8,000) | ¥340,000 (approx. USD 2,300) |
In the base case, ¥1.2 million (approx. USD 8,000) a year is left over. Apply the simultaneous three-point stress and what remains shrinks to ¥340,000 (approx. USD 2,300). And that ¥340,000 (approx. USD 2,300) is pre-tax; after income tax and resident tax, almost nothing survives. Two failed water heaters would wipe it out. DSCR has not fallen below 1.0, so the deal does not collapse — but no one could call this "an investment with room to breathe." Read alongside what actually happens to holding costs when rates rise and you will see how fragile that ¥340,000 (approx. USD 2,300) really is.
If DSCR falls below 1.0 under stress, the decision is to pass at that price and on those financing terms. There are exactly three ways to change the answer: lower the price, put in more equity, or improve the financing terms including the rate. Widening the third option depends on presenting your financial statements and full property documentation to lenders and maintaining an ongoing dialogue with them. This is another area where Japan works differently from the Anglo-American markets: Japanese banks lend against a long-term relationship with the borrower far more than against a transaction, and there is no broadly used credit-score shortcut. The practical approach is set out in how to build the bank relationships that get financing approved.
One further point on leverage, and it matters especially for readers who will be offered "easy" financing structures. Using a residential mortgage intended for an owner-occupied home to acquire an investment property is conduct that the 住宅金融支援機構 (Japan Housing Finance Agency, JHF) has publicly warned against as improper use of its 【フラット３５】 (Flat 35) loan programme. It constitutes a breach of the loan agreement, and the lender will demand immediate repayment of the full outstanding balance. Moreover, even where the paperwork was handled by an intermediary, obtaining a loan on false representations exposes the borrower personally to criminal liability for fraud. Pitches that promise you can start on advantageous low-rate terms sometimes omit this premise entirely.
Decision for this section: If DSCR drops below 1.0 under the simultaneous three-point stress, you do not buy on those terms. Set that line before you look at a single property.
Rule 3 | Judge location by the structure of supply and demand, not by popularity
Whether a location is good is not decided by walking distance to the station or by the image of the neighbourhood. It is decided by whether there are more people wanting to rent or more rooms wanting to be let. According to the 2023 Housing and Land Survey from the Statistics Bureau of the MIC, of the 9,002,000 vacant homes nationwide, 4,436,000 (4.436 million vacant rental units) are held for rent. That is 49.3% of all vacant homes and 6.8% of the total housing stock.
That figure carries more weight than it first appears. When people hear 空き家 (akiya, vacant house) they usually picture an old detached home left empty after an inheritance — the image that has driven international press coverage of Japan's "abandoned house" phenomenon. In reality, close to half are rental homes actively being marketed that nobody will rent. In other words, large parts of Japan's rental market already have supply running ahead of demand. New rental housing continues to be built even as the population falls, partly because building on inherited land is itself a long-standing inheritance-tax strategy, and the gap shows up as those 4,436,000 units. An investor arriving from a supply-constrained market such as the UK, Australia, or coastal North America should recalibrate here: in Japan, structural undersupply is the exception, confined to a small number of central urban submarkets, and the default assumption for everywhere else should be surplus.
That is precisely why it pays to go to the site and count supply and demand with your own eyes and feet. The seven checks below are limited to things you can verify on the day you visit the property.
- Number of competing listings: Within a 10-minute walk, how many units of the same layout and the same rent band are on the market?
- Age and specification of competitors: What share of competing stock is newer than the building you are buying? Do they offer a parcel delivery locker (宅配ボックス, takuhai box — near-mandatory in Japan given the reliance on redelivery), a separate vanity basin, or free internet?
- Time on market: How many weeks or months has the same unit been listed? If the same unit is still advertised a month later, it is a unit that does not let.
- Advertising terms: How many months' worth of 広告料 (kōkokuryō, commonly called "AD") is being paid to the letting agent? In Japan the landlord pays this incentive to brokers on top of commission; areas where AD is thick are areas where units are hard to let.
- Move-in cost terms: Has it become routine to waive 敷金 (shikikin, the refundable deposit) and 礼金 (reikin, non-refundable "key money" paid to the landlord with no Western equivalent), or to offer one to two months of free rent?
- Recent signed rents: Not asking rents but the rents actually agreed. Ask the management company for the past year's contracted results.
- The street by day and by night: Commuting and school routes, foot traffic after dark, and the turnover of surrounding shops.
Of the seven, time on market and advertising terms are the two most honest indicators. An asking rent is the landlord's hope, not the market's answer, but the fact that the same unit has been listed for three months cannot be argued away. If you cannot visit in person because you are based overseas, this is the single research task worth paying a trusted local party to perform for you — it is far more informative than another projection spreadsheet.
For a market-wide yardstick, the Japan Real Estate Institute (一般財団法人日本不動産研究所) conducts a regular survey of property investors. In its 54th survey (as of April 2026, published 27 May 2026), the expected yield for a whole rental apartment building in Tokyo's Jōnan district (城南, the southwestern wards including Meguro, Setagaya, Shinagawa and Ōta — a prime residential area) is 3.6% for studio-type and 3.7% for family-type units. For studio-type units in major regional cities, the levels are 4.9% in Sapporo, 5.0% in Sendai, 4.2% in Yokohama, 4.5% in Nagoya, 4.2% in Osaka and 4.5% in Fukuoka.
Respondents to that survey are predominantly institutional investors, however, and the levels differ from the yields individuals actually achieve on the properties they buy. If you are an individual, the practical use is not the absolute figure but the ranking between cities. Holding on to the structural point — that Tokyo and the major regional cities are separated by more than a full percentage point — lets you look calmly at the high gross yields advertised on regional properties and recognise them for what they are: compensation for risk. For price levels, MLIT publishes a monthly Real Estate Price Index where you can track residential and commercial series yourself.
Decision for this section: Count the available listing inventory and the time-to-let in your target area yourself. A location judgement that skips this work is simply borrowing someone else's assessment.
Rule 4 | Operations are decided by how you design the management contract
What determines the outcome after purchase is not the building so much as day-to-day operations. And the quality of operations is decided almost entirely by how the contract with the management company was designed. Here Japan gives you something many markets do not: statutory disclosure items, and a legal right to receive an explanation before you sign.
Under the 賃貸住宅管理業法 (Chintai Jūtaku Kanri Gyōhō, the Rental Housing Management Business Act, in force since 2021), any rental housing management operator handling 200 or more units must register with the Minister of Land, Infrastructure, Transport and Tourism. Registered operators must appoint at least one qualified 業務管理者 (gyōmu kanrisha, business manager) at each office, must provide an explanation of important matters together with a written document before concluding a management agreement, and must issue a further written document upon conclusion. In practice this means the law entitles you to receive, in writing and before you commit, a statement of exactly what the manager will and will not do. Readers familiar with lightly regulated letting-agent markets should treat this as a genuine advantage — but it only works if you actually read the document rather than treating it as a formality, which is how most Japanese buyers treat it.
Equally worth knowing is that the same Act obliges the operator to report the status of its work to the owner on a regular basis. The monthly owner's report is not a courtesy from your management company. Understanding that the document has a statutory basis makes it considerably easier to push back on its contents.
The Act also regulates サブリース (sublease) arrangements, in which an operator master-leases the building and guarantees the owner a fixed rent regardless of occupancy. These are heavily marketed in Japan and have no close equivalent in most Western markets, so overseas buyers frequently misread them as risk-free income. The law prohibits exaggerated advertising, prohibits improper solicitation, and requires an explanation of important matters before a master lease is concluded. If you are considering one, confirm the following three points in writing to avoid a later dispute about what was understood.
- Conditions for a rent reduction claim: Under the 借地借家法 (Shakuchi Shakuya Hō, the Land and Building Lease Act), the guaranteed rent is not fixed in perpetuity, and the operator can open negotiations to revise it downward — a point that has produced a long line of Japanese litigation and that catches most first-time owners by surprise
- Exemption period: For how many months after handover, or after a tenant vacates, is no guaranteed rent paid?
- Early termination clauses: On what conditions may you, the owner, terminate, and what penalty applies if you do?
Once the contract is signed, the monthly owner's report becomes your only fixed-point observation data. Watching the occupancy rate alone will not reveal a change. Some time ago I was consulted on a whole apartment building in Tokyo where occupancy was holding at around 95% and yet the cash left over was falling year after year. Laying the reports side by side, the average number of days from listing to signed lease had stretched from 28 days to 67 days, and the advertising fees and restoration costs had grown accordingly. Occupancy is an outcome metric, and outcome metrics conceal the early signs of deterioration.
Narrow the monthly reporting to these seven figures and change becomes visible: occupancy rate, arrears rate, average days from listing to signed lease, number of units vacated, 原状回復 (genjō kaifuku, restoration-to-original-condition) costs, advertising fees (AD), and renewal rate. When average days and advertising fees start rising together, that is the signal that your rent setting or your specification has drifted away from the market. If your report does not contain these items, start by asking the management company to add them. Because periodic reporting is a statutory obligation, asking to discuss the line items is not an unreasonable request.
The practical quality of management depends enormously on the capability of the individual in charge — what we at INA call 人財 (jinzai, written with the character for "asset" rather than the usual "resource," to signify that people are the asset). What did they try during a period when the numbers would not move? How thoroughly did they ask departing tenants why they left? Whether you have a counterpart who can think about that with you is what changes the cash you keep five years from now. If you are reviewing your management arrangements, INA offers a free consultation where we can go through your current reports together.
Decision for this section: At the important-matters explanation for the management agreement, confirm that the scope of work, the reporting frequency, and the reporting line items are all set out in writing. If they are not, ask for them in writing before signing.
Rule 5 | Judge tax by what you keep, not by what you save
Tax should be judged not by the size of the saving but by the cash you keep across the holding period and the sale combined. The reason is structural: tax reduced while you hold comes back at you when you sell. This is the section overseas investors most often get wrong, because Japanese depreciation rules for used buildings are unusually aggressive and are marketed accordingly.
First, where property income runs at a loss, that loss can be offset against other income — 損益通算 (son'eki tsūsan, aggregation of profit and loss across income categories). This is a meaningful feature: unlike the US passive activity loss rules or the UK's restriction of mortgage interest relief for individual landlords, a Japanese individual can generally set a genuine property loss against salary income. However, according to the NTA's guidance, the portion of the loss corresponding to interest on debt incurred to acquire land is excluded from this offset. If you buy a property with a high land component using high leverage, the tax saving you assumed may not materialise. Check this before purchase, alongside the allocation of the price between land and building.
Next, depreciation. Depreciation is an expense that involves no cash outflow, so it compresses taxable income during the holding period. The useful life of a used asset can be computed by the 簡便法 (kanbenhō, simplified method), and where the statutory useful life has fully elapsed, you may use a period equal to 20% of that statutory life. The statutory useful life for wooden-frame construction is 22 years, so a wooden apartment building older than 22 years can be depreciated over 4 years. Because a large expense can be booked over a short period, this is frequently presented as a tax-saving technique — and it is the mechanism behind much of the marketing aimed at high-income foreign and domestic buyers of older Japanese wooden buildings.
But every yen depreciated lowers the building's book value. Capital gain on sale is calculated as sale price − (acquisition cost + selling expenses), and the acquisition cost is based on the depreciated book value. The income you compressed while holding therefore reappears, all at once, as taxable income in the year you sell. Understand depreciation as a mechanism that shifts the timing of taxation rather than one that eliminates tax, and you will not misjudge the decision.
For that reason, the holding period is designed backwards from the exit. Under the NTA's classification, if the ownership period exceeds five years as of 1 January of the year of transfer, the gain is a long-term capital gain taxed at 15% income tax plus 5% resident tax. At five years or less it is a short-term capital gain, taxed at 30% income tax plus 9% resident tax (in both cases the special reconstruction income tax applies additionally). Note the quirk in the counting rule — the clock is measured to 1 January of the sale year, not to the anniversary of purchase, so the practical threshold is closer to six calendar years than five. Since the rate roughly doubles, whether you sell a fully depreciated property in year five or year six moves the cash you keep substantially.
Put in order, the test runs like this. Take the annual tax saving during the holding period, multiply by the expected number of years held, and subtract the additional capital gains tax triggered on sale. If the total is positive and the sale price exceeds the outstanding loan balance, the deal stands up on tax. Look at only one half and the arithmetic will fail you at the exit.
Tax treatment varies with the ownership structure, your other income, whether you hold personally or through a company, and the land-to-building ratio of the property — and for non-resident owners, with withholding obligations and the applicable tax treaty as well. Please confirm your actual position with a qualified tax professional.
Decision for this section: Add the tax saved during the holding period and the capital gains tax due on sale together, on the same sheet of paper, before deciding whether to buy.
How do success conditions differ between a condominium unit and a whole apartment building?
"Which should I start with, a unit or a whole building?" It is the question I am asked most often. The answer depends on your equity and on the time you can give to operations. The five rules above are a common yardstick, but the variables behave very differently depending on what you buy. Owning a 区分マンション (kubun manshon, one unit within a concrete condominium building, held as a strata title with a share of the common parts) and owning a 一棟アパート (ittō apāto, an entire small apartment building, usually wooden-frame, on land you own outright) are discussed under the same phrase, "real estate investment," while the way failure arrives is completely different.
| Comparison | Condominium unit | Whole apartment building |
|---|---|---|
| Scale of upfront cost | Can start from several million yen (roughly USD 20,000–70,000). Light equity burden | Tens of millions of yen (from roughly USD 200,000). Typically 10–20% equity required |
| How lenders assess it | Weighted heavily toward your personal profile: employer and annual income | Weighted heavily toward the property's income and its 積算評価 (sekisan hyōka, cost-based appraisal of land plus depreciated building) |
| How vacancy risk shows up | One vacancy means 0% occupancy. All or nothing | One vacancy in ten units means 90% occupancy. Diversification works |
| Control over repairs | Only the interior of your unit. Common areas follow the resolutions of the owners' association | Everything is yours to decide — and so is the responsibility for those decisions |
| Owners' association | Yes: a 管理組合 (kanri kumiai). Limited scope to influence increases in reserve contributions or the timing of major repairs | None. You draw up the repair plan yourself |
| Buyer at the exit | Both owner-occupiers (実需, jitsuju, genuine end-user demand) and investors. But with a tenant in place it cannot be sold to owner-occupiers | Almost entirely investors. Priced off yield |
| How to judge success | After-tax cash flow per unit, and whether it can be sold at owner-occupier pricing once vacant | DSCR, and long-run retained cash with major repairs built in |
Where condominium unit ownership tends to go wrong
Where owners of a single unit stumble is, in most cases, in territory they cannot control. First, increases in the 修繕積立金 (shūzen tsumitatekin, the long-term repair reserve contribution). Developers frequently set the reserve low at the time of new sale and then raise it in stages in line with the long-term repair plan — a pattern with close parallels in Australian strata levies and US HOA special assessments, but institutionalised in Japan as a planned escalation from the outset. If ¥5,000 (approx. USD 33) a month becomes ¥15,000 (approx. USD 100) a month fifteen years later, ¥120,000 (approx. USD 800) a year of your retained cash disappears. Before purchase you need to obtain the long-term repair plan and the recent general meeting minutes and confirm the timing and size of planned increases.
Second, the exit depends on owner-occupier demand. If you sell with a tenant in occupation, your buyers are limited to investors and the price is set by yield. Selling vacant to an owner-occupier often achieves a higher price, and the gap can run to around 20%. One owner who held two units in Tokyo obtained a sale valuation while the units were tenanted and was quoted around 20% below the local owner-occupier market. Whether the sale coincides with a vacancy changes the outcome — which is why, in Japan, the exit is timed around tenant turnover rather than around the market.
Where whole-building ownership tends to go wrong
Failure in whole apartment buildings usually originates in the handling of time. First, major repairs arriving all at once. Exterior repainting, roof waterproofing and replacement of water supply and drainage pipes all fall due at broadly the same point in the building's life. If exterior painting on a ten-unit building costs ¥3 million (approx. USD 20,000), several years of retained cash evaporate. Building a timeline at the point of purchase of what will be needed, when, and at what cost is indispensable.
Second, a practical constraint: the 22-year statutory useful life of wooden construction governs the loan term. The older the building, the shorter the loan a bank will write, which raises the annual payment and pushes DSCR down. And if your loan is shortened when you buy, your buyer's loan will be shortened when you sell. Design the holding period with your future buyer's financing terms in mind. This dynamic — where a tax depreciation schedule effectively dictates credit availability and therefore resale liquidity — is close to unique to Japan, and it is the single most under-appreciated risk for foreign buyers attracted by high headline yields on older wooden stock.
Third, chain vacancies across the whole building. Because the units were built at the same time with the same layout, once the building drifts away from the market every unit stops letting simultaneously. Operations then hinge on upgrading specification or revising rent one unit at a time and observing the result. The mechanics and risks of whole-building ownership are covered in how whole apartment building investment works and where the risks sit, and the breakdown of upfront costs for a single unit in the upfront and running costs of condominium ownership.
Decision for this section: Decide which format suits you first, based on your equity, your borrowing capacity, and the time you can personally give to operations. Only then start looking at properties.
What separates those who succeed in real estate investment from those who do not?
What separates investors who succeed from those who do not is neither talent nor volume of information. It is whether they have the habit of running the numbers themselves before they buy. Hand the same property documents to different people and the successful ones, without exception, come back only after converting the figures into their own.
| Situation | What successful investors do | What tends to trip people up |
|---|---|---|
| On receiving property documents | Ignore the gross yield and recalculate NOI and DSCR themselves | Accept the quoted yield and the vendor's projection as given |
| Sources | Go to primary documents: the property register, the rent roll, the tax assessment notice, the long-term repair plan | Stop at sales material and seminar explanations |
| Speed of decision | Fast when the terms fit, because the criteria are already set | Fast when pressured, because there are no criteria |
| Record keeping | Keep monthly operating figures in their own ledger and compare year on year | Receive the management company's report and go no further |
| Exit criteria | Write down before buying what would make them sell | Start thinking about selling only after conditions have deteriorated |
| Treatment of failure | Quantify what went wrong on the first property and fold it into the criteria for the second | Hide the failure and buy the next one on the same judgement |
One caution about how to read success stories. Searches for "real estate investment success examples" are common, and the wish to know how others fared is entirely understandable. But the success stories of people who acquired between 2013 and 2021 rest on the premises of that era: very low rates and a rising market. Retracing the same steps in 2026, with the policy rate at around 1.0%, will not produce the same result. What you should extract from a case study is not the outcome but the process of judgement — what that person calculated before buying, and on what grounds they walked away from the deals they declined.
I do not regard failure itself as a bad thing. Less cash left over than expected on the first property; a longer vacancy than projected. Results like these are the raw material for the next set of criteria. What is damaging is to stop running the numbers out of fear of failure, and to hand the judgement to someone else. An investment where the judgement was delegated cannot be reproduced when it works, and leaves nothing learned when it does not.
With that said, the thing I most want you to write down before purchase is your exit criteria. "If occupancy falls below 80% for two consecutive periods, consider selling." "If the interest rate exceeds 3.0%, decide between early repayment and sale." "If the quotation for major repairs exceeds a set figure, reconsider whether to keep holding." Written as numbers, they let you act on criteria rather than emotion when conditions deteriorate. The owners who last longest are, almost without exception, the ones carrying that single sheet.
Decision for this section: Write out three exit criteria, as numbers, on paper. Any item you cannot write is a sign that your understanding of that area is still incomplete.
Pre-purchase checklist | The success rules on a single page
Here is everything above condensed into eight items to confirm before you submit an offer. Get to a state where you can answer all eight, and only then move to expressing an intention to purchase.
- Have you calculated the four metrics? After-tax cash flow, DSCR, yield gap, exit price — computed from the rent roll and actual operating expense figures
- Have you run the simultaneous three-point stress? Rate +1.0 point, occupancy −10 points, rent −5%. Does DSCR stay above 1.0?
- Have you counted supply and demand yourself? Competing listings within a 10-minute walk, time on market, advertising terms, recent signed rents
- Have you checked the substance of the management contract? Scope of work, reporting items, reporting frequency. For a sublease: conditions for rent reduction claims, exemption period, early termination clauses
- Have you totalled the tax position? Tax saved while holding minus capital gains tax on sale — including whether you sell after five years or within five
- Does the format suit you? Condominium unit or whole apartment building. Decide from your equity, your borrowing capacity, and the time you can give it
- Have you put your exit criteria in writing? Three numerical statements of what would make you sell
- Has a third party checked your arithmetic? Have someone with no stake in the sale run the same numbers
The eighth item — an independent recalculation — is skipped far more often than its value justifies. The interests of seller and buyer do not align. When someone with no involvement in the sale recalculates from the same documents, the differences in the underlying assumptions come to the surface. The perspective for judging whether a price is reasonable is set out in four rules for avoiding overpaying.
If you try to fill in these eight items with the documents you already hold and find yourself stuck at any point, please talk to INA about that part alone. We will not tell you whether to buy; we will go through with you whether the numbers needed for the judgement are all present. Note that this article organises a decision procedure and is not a recommendation to acquire any particular property or product. Any final investment decision should be made in light of your own financial position and objectives.
Conclusion | The rules of successful property investment are the habit of checking the numbers before you buy
We have set out five rules. Replace the definition of success with four numbers. Run the stress test against 2026 interest rate assumptions. Judge location by the structure of supply and demand. Design the contract with your management company. Judge tax by the cash you keep. None of them is glamorous. All of them are the accumulation of unspectacular work: calculating, writing things down, and confirming them before you buy.
Readers who began this article hoping for a winning formula may find that unsatisfying. But in a field where no official success rate exists, the only thing that can genuinely be reproduced is not retracing someone else's success story — it is the procedure of running your own numbers on your own property. That procedure holds when rates change, when the area changes, and whether you buy one unit or a whole building. That is what reproducibility actually consists of.
Real estate is an asset you live with for five years, ten years, longer. What separates outcomes is not a high short-term yield but whether you bought on terms you can still hold in ten years' time. Choose the property, and the partner you entrust the management to, with that horizon in view. Our conviction that 人財 (jinzai) — people as the greatest asset — sits at the centre of this business comes from exactly that: over this time horizon, working with people you can trust is what moves the numbers themselves.
Frequently asked questions (FAQ)
Q1. What is the success rate for real estate investment in Japan?
A. No official statistic aggregating a success rate for real estate investment is published in Japan. The "X% success rate" figures seen in advertising use different samples, periods and definitions of success depending on who published them. Rather than someone else's number, define your own success conditions using after-tax cash flow and exit price.
Q2. How much equity do I need to start?
A. The minimum amount varies with the type of property and the financing terms, but the real test is not "how little can I start with" — it is "does DSCR stay above 1.0 after the stress test." The less equity you put in, the larger the loan, and the greater the impact when rates rise by 1.0 point. Condominium units can be started from several million yen (roughly USD 20,000–70,000), while whole apartment buildings typically require equity of around 10–20% of the price.
Q3. Which is more likely to succeed, a condominium unit or an apartment building?
A. Neither can be declared more likely to succeed; it is more useful in practice to treat them as failing in different ways. A single condominium unit drops to 0% occupancy when it is empty, but the upfront cost is light and management demands are limited. A whole apartment building spreads vacancy risk, but major repairs arrive together and the 22-year statutory useful life of wooden construction governs the available loan term. Choose based on your equity and the time you can give to operations.
Q4. Is there a guaranteed winning formula for real estate investment?
A. There is no formula that wins on any property. There is, however, a procedure that lowers the probability of failure: quantify your success conditions with the four metrics, run the simultaneous three-point stress of rate +1.0 point, occupancy −10 points and rent −5%, and write down your exit criteria before you buy. Doing those three things every time is the closest thing to a winning formula there is.
Related reading
- What is an exit strategy in real estate investment? Timing the sale and the points that decide the outcome
- Investment strategy in an era of population decline: reading which cities retain demand, when to change use, and how to exit
Sources and references
- 総務省統計局「令和5年住宅・土地統計調査 住宅及び世帯に関する基本集計」 (Statistics Bureau, Ministry of Internal Affairs and Communications, "2023 Housing and Land Survey: Basic Tabulation on Dwellings and Households") (Japanese only) (9,002,000 vacant homes; vacancy rate 13.8%; 4,436,000 vacant rental units)
- 日本銀行「金融市場調節方針の変更について」（2026年6月16日） (Bank of Japan, "Change in the Guideline for Money Market Operations," 16 June 2026) (Japanese only)
- 日本銀行「当面の金融政策運営について」（2026年7月31日） (Bank of Japan, "Statement on Monetary Policy," 31 July 2026) (Japanese only)
- 国土交通省「賃貸住宅管理業法ポータルサイト 制度の解説」 (Ministry of Land, Infrastructure, Transport and Tourism, MLIT, "Rental Housing Management Business Act Portal: Explanation of the System") (Japanese only)
- 国土交通省「サブリース事業の適正化のための措置」 (MLIT, "Measures for the Proper Conduct of Sublease Businesses") (Japanese only)
- 国税庁 タックスアンサー No.1391「不動産所得が赤字のときの他の所得との通算」 (National Tax Agency, Tax Answer No. 1391, "Offsetting a Loss on Real Estate Income Against Other Income") (Japanese only)
- 国税庁 タックスアンサー No.5404「中古資産の耐用年数」 (National Tax Agency, Tax Answer No. 5404, "Useful Life of Used Assets") (Japanese only)
- 国税庁 タックスアンサー No.3202「譲渡所得の計算のしかた（分離課税）」 (National Tax Agency, Tax Answer No. 3202, "How to Calculate Capital Gains (Separate Taxation)") (Japanese only)
- 国税庁 タックスアンサー No.3208「長期譲渡所得の税額の計算」 (National Tax Agency, Tax Answer No. 3208, "Calculating Tax on Long-Term Capital Gains") (Japanese only)
- 国土交通省「令和8年地価公示」（2026年3月17日公表） (MLIT, "2026 Land Price Publication," released 17 March 2026) (Japanese only)
- 国土交通省「不動産価格指数」 (MLIT, "Real Estate Price Index") (Japanese only)
- 住宅金融支援機構【フラット３５】「【フラット３５】の不適正利用に巻き込まれないために」 (Japan Housing Finance Agency, Flat 35, "Avoiding Involvement in Improper Use of Flat 35") (Japanese only)
- 一般財団法人日本不動産研究所「第54回 不動産投資家調査（2026年4月現在）」（2026年5月27日公表） (Japan Real Estate Institute, "54th Survey of Real Estate Investors, as of April 2026," published 27 May 2026)
