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You have a stable job in Tokyo, you have been here a few years, and now the thought keeps surfacing: should I buy property in Japan? Maybe you have heard colleagues talk about Tokyo’s consistently high occupancy rates. Maybe a Japanese co-worker casually mentioned they bought a studio apartment in Shinjuku-ku as an investment. Or maybe you stumbled across RENOSY and wondered whether a foreigner can even participate.
This review is written for exactly that situation. We will walk through what RENOSY is, whether expats can realistically use it, what yields look like in practice, the tax side that most review articles ignore, and how property investment stacks up against alternatives like NISA.
Let’s be direct upfront: Japanese real estate investment is not a get-rich-quick scheme. Done well, it is a legitimate long-term asset building strategy. Done poorly — or chosen for the wrong reasons — it can tie up capital in an illiquid asset with maintenance costs that erode your returns. This review will give you the honest picture.
1. What Is RENOSY?
RENOSY is a real estate investment platform operated by GA technologies Co., Ltd. (GA テクノロジーズ), a company listed on the Tokyo Stock Exchange Growth Market (ticker: 3491). GA technologies was founded in 2013 and has grown into one of the more prominent property technology (PropTech) firms in Japan.
The RENOSY brand sits at the intersection of two things that had traditionally been difficult to do simultaneously: invest in real estate and not spend enormous amounts of time managing it. The platform targets salaried workers — what the Japanese market calls “salary investors” (サラリーマン投資家) — who want property as an asset class but cannot function as active landlords.
RENOSY’s core pitch is:
- AI-assisted property selection, leaning on data from GA technologies’ transaction history and market analytics
- A fully managed end-to-end service covering property sourcing, purchase, loan arrangement, tenant management, and ongoing asset monitoring
- An app where investors can track their portfolio without needing to call an agent
The properties RENOSY focuses on are predominantly urban compact apartments (ワンルーム・1K マンション) concentrated in Tokyo and other major metropolitan areas. These are typically pre-owned units in established buildings rather than newly built properties, which has pricing and depreciation implications we will discuss in the tax section.
GA technologies also operates related services including RENOSY WEALTH for higher-end transactions and has expanded into several other real estate digital services. As of 2026, the company has processed substantial transaction volume and holds a recognized position in Japan’s PropTech sector.
2. Can Expats Use RENOSY? Residency, Visa, and Language Considerations
This is the question most expat-focused reviews either skip or answer vaguely. Here is a grounded breakdown.
Residency Requirements
To purchase real estate in Japan as a foreign national, you do not need Japanese citizenship. Foreign nationals — including non-permanent residents — can legally own property in Japan. This is a relatively open policy compared to many other countries.
However, financing is a different matter entirely. Most Japanese banks and lending institutions require borrowers to have permanent residency (永住権) to qualify for a mortgage. Some regional banks and a handful of specialized lenders will work with visa holders on certain visa categories (e.g., Engineer/Specialist in Humanities, Highly Skilled Professional) with long remaining validity, but the options are more limited and the terms are often less favorable.
RENOSY’s general framework works within this reality. If you have permanent residency, you have access to the broadest range of financing options. If you are on a work visa, your practical options narrow. It is worth having a candid conversation with RENOSY’s sales consultation team about your specific visa status before proceeding. Entering a consultation costs nothing, and getting clarity on financing eligibility early saves everyone time.
All-Cash Purchases
If you have the capital to purchase without a loan, visa status becomes far less of a hurdle from a legal and financial standpoint. The properties RENOSY typically handles range from roughly ¥15 million to ¥30 million for compact urban apartments, which is meaningful capital to deploy in cash, but not impossible for some expats who have been saving for several years or who are coming from higher-cost-of-living markets.
Language Support
This is where we have to be honest: RENOSY’s primary language is Japanese. The app, contracts, management reports, and customer support are all in Japanese. There is no dedicated English-language service pathway as of 2026.
This creates a practical barrier. Purchasing real estate involves contracts with precise legal language. Rental management communications, repair notices, and annual statements all arrive in Japanese. If your Japanese reading level is intermediate or below, you will need to engage a translator or bilingual advisor for key documents.
That said, the managed nature of the service — where RENOSY handles tenant communication, building management liaison, and routine maintenance coordination — does reduce the volume of Japanese correspondence you personally need to act on compared to self-managing a property. The day-to-day operational load in Japanese is lower than it would be if you purchased independently.
Our recommendation: if you are considering RENOSY but your Japanese is limited, factor in the cost of using a tax accountant (税理士) who is bilingual and familiar with rental income reporting. That cost is real but deductible, and the peace of mind it buys is substantial.
Practical Checklist for Expat Eligibility
- Permanent residency: Broadest financing access, minimal barriers
- Long-term work visa (3-year or 5-year): Consult on financing options; all-cash purchase is feasible
- Short-term or student visa: Financing will be very difficult; property purchase not practically advisable
- Japanese language ability: Required to meaningfully engage with contracts and management; professional translation/interpretation is a workable substitute
3. Yield Expectations: What the Numbers Actually Look Like
Yield is where real estate investment marketing gets sloppy, so let’s be careful with terms and data.
Surface Yield vs. Net Yield
Surface yield (表面利回り) is the raw annual rental income divided by the purchase price, expressed as a percentage. It does not account for any costs.
Net yield (実質利回り) deducts operating expenses — management fees, building maintenance reserve contributions, property taxes, vacancy periods, and insurance — from the rental income before dividing by total acquisition cost (which includes purchase price plus transaction costs like agent fees and taxes).
The gap between these two figures is significant. A property advertised at a 5% surface yield may deliver a net yield of 3% or less once realistic costs are applied.
Tokyo Market Context (General Data)
Tokyo’s urban compact apartment market has sustained relatively resilient occupancy rates driven by persistent urbanization, a shrinking national population concentrated increasingly in metropolitan areas, and structural undersupply of well-located smaller units near transit hubs.
For the Tokyo market broadly, industry data and real estate research reports have typically indicated:
- Surface yields: Approximately 4–6% for compact urban apartments in central and near-central wards
- Net yields: Approximately 2–3.5% after realistic operating costs
- Occupancy rates: High in prime transit-accessible locations, historically cited in official figures at strong levels in core Tokyo wards
These are general market figures, not figures specific to RENOSY’s portfolio performance. RENOSY does not publicly publish audited average yield data for its managed properties that we can independently verify, and we will not fabricate a specific number. When you enter a consultation, ask RENOSY to show you historical yield data for comparable properties they have sold and managed. That is the right data to evaluate.
The Appreciation Question
Japanese real estate has a different relationship with land and building value compared to, say, US or Australian markets. Buildings in Japan depreciate in assessed value over time, while land value fluctuates based on location fundamentals. A reinforced concrete (RC) structure has a legal useful life of 47 years for tax purposes; a light steel structure has 19 years.
This means many of the properties RENOSY handles — pre-owned compact apartments in older buildings — may have limited remaining depreciable life for tax purposes, which cuts both ways: less depreciation to write off, but the asset may already reflect that in pricing. For brand-new properties, depreciation is more generous but purchase prices are higher and surface yields are typically lower.
Capital appreciation in Tokyo’s prime wards has been real over the past decade, but it is location-specific, not guaranteed, and the market cycle matters. Buying with the expectation of capital gain rather than rental yield is speculation, not investment. Approach yield as the investment thesis and any appreciation as a potential bonus.
Cash Flow Reality Check
Run a rough monthly cash flow scenario:
Example (illustrative, not actual RENOSY property):
Purchase price: ¥22,000,000
Mortgage (35yr, 2.5%): ¥78,000/month (approximate)
Monthly rent: ¥85,000
Management fee (5%): ¥4,250/month
Building maintenance: ¥8,000/month (reserve fund contribution)
Property tax (monthly): ¥5,500 (annualized ÷ 12)
Vacancy allowance (5%): ¥4,250/month
Net monthly cash flow: ¥85,000 - ¥78,000 - ¥4,250 - ¥8,000 - ¥5,500 - ¥4,250
= -¥15,000/month (negative cash flow before tax benefits)
Negative monthly cash flow is not uncommon in Tokyo compact apartment investment, particularly when leveraged. The investment case typically rests on three legs: tax benefits during the holding period (covered in Section 5), asset accumulation as the mortgage is paid down, and terminal value when the property is eventually sold. This is a different mental model than a high-yield dividend stock. It requires understanding the full picture, not just the monthly rent figure.
4. Pros and Cons for Expats
Pros
Turnkey passive management. The biggest genuine advantage of RENOSY for expats is not having to manage a tenant relationship, arrange repairs, or communicate with building management in Japanese. For someone working full-time with limited Japanese language capacity, the managed service model dramatically reduces friction.
AI-assisted selection. GA technologies has invested in data infrastructure. Their property sourcing uses analytics on location fundamentals, rental demand, and comparable transactions. This does not guarantee good outcomes, but it is more systematic than choosing a property based on intuition alone.
Urban market focus. Compact apartments in Tokyo and major cities have structural demand support. This is not investing in a rural property with uncertain future rental demand.
App-based monitoring. Being able to check your asset status in an app without calling an agent is a genuine quality-of-life improvement for anyone who has dealt with traditional Japanese real estate agents.
Financing coordination. RENOSY works with lending partners and facilitates loan arrangement as part of their service, which reduces the burden on you to independently approach multiple banks.
Portfolio building over time. RENOSY’s model is built around the concept of building a portfolio — starting with one unit and potentially adding more over time. Their consultants are set up to support multi-property strategies.
Cons
No English-language service. As noted, this is a real operational barrier. Contracts, management reports, tax documentation — all in Japanese.
High minimum commitment. A single compact Tokyo apartment typically starts at ¥15–20 million or more. This is a large capital commitment with significant illiquidity. Unlike NISA investments, you cannot partially liquidate.
Transaction costs are high. Buying real estate in Japan involves substantial one-time costs: agent fee (仲介手数料, typically 3% + ¥60,000 + consumption tax), registration taxes, stamp duty, mortgage arrangement fees, and sundry administrative costs. These can add 5–8% to your effective acquisition cost and must be recovered before you are in positive return territory.
Exit is not guaranteed. When you decide to sell, finding a buyer at your target price takes time and depends on market conditions. The compact apartment market in Tokyo is relatively liquid compared to other Japanese real estate, but it is nothing like selling a stock.
Consultation sales model. RENOSY uses a consultative sales approach where you schedule a meeting and a salesperson walks you through options. This is standard for this type of product, but it means you should come prepared with questions and not feel pressured to commit quickly. Take your time.
Limited secondary research in English. Unlike mainstream Japanese investment products, finding independent third-party RENOSY reviews in English is difficult. Your due diligence will require engaging with Japanese-language material or working with a bilingual advisor.
5. Tax Implications for Foreign Residents
This section is important and routinely undercovered in expat real estate guides. We are covering general principles; consult a qualified tax accountant (税理士) for your specific situation.
Rental Income is Taxable
Rental income from Japanese property is subject to Japanese income tax, regardless of your nationality. If you are a tax resident of Japan (which most long-term expats are), your rental income is aggregated with your employment income and taxed at your marginal income tax rate, which ranges from 5% to 45% plus a 10% resident tax (住民税).
This matters enormously for your effective return. If your marginal rate is 33%, paying 33% of your net rental income in tax substantially changes the investment economics.
Depreciation: The Key Tax Strategy
Here is where it gets more interesting. You can deduct depreciation (減価償却費) on the building portion of a property purchase against your rental income and, in some cases, against your employment income.
For pre-owned reinforced concrete apartments — the type RENOSY commonly handles — the remaining depreciable life can be short. A simplified formula for used buildings:
Remaining depreciable years = Statutory life × 20%
(for a building that has exceeded its statutory life)
Example: RC building, statutory life 47 years, building age 30 years:
Remaining life = (47 - 30) + (30 × 0.2) = 17 + 6 = 23 years
Annual depreciation = Building value ÷ 23 years
If the building value is ¥6,000,000 and remaining life is 23 years, annual depreciation is approximately ¥260,000. This reduces your taxable rental income by that amount each year.
For older buildings that have exceeded their statutory life, depreciation can be more aggressive (remaining life = statutory life × 20%), which has historically created tax benefits for high-income earners. However, tax law changes and the NTA (National Tax Agency) scrutiny of real estate tax shelters have tightened some of the aggressive strategies used in prior years. Work with a qualified tax accountant.
Rental Income Filing
If your rental income (or the combination of rental and other side income) exceeds ¥200,000 in a calendar year, you are required to file a 確定申告 (kakutei shinkoku) — an annual tax return — by March 15 of the following year.
This is where freee becomes highly relevant for foreign residents investing in real estate. freee is one of Japan’s leading cloud-based accounting and tax filing platforms. Its interface is available in English for basic navigation, and it supports rental income tracking, depreciation calculations, and tax return preparation.
For expats managing rental income alongside employment income, freee’s features for tracking income and expenses, categorizing deductions, and generating the forms needed for the kakutei shinkoku are genuinely useful. It reduces the complexity of what would otherwise require either a specialist accountant for routine filing or a significant investment of time learning Japanese tax forms.
Try freee for your rental income filing → (affiliate link)
Property Tax (固定資産税)
Property owners pay an annual fixed asset tax (固定資産税) and, in urban planning areas, an urban planning tax (都市計画税). These are assessed on the assessed value of the land and building, not the market value. For a compact Tokyo apartment, this typically runs in the range of ¥60,000–¥120,000 per year depending on the property. It is a deductible expense against rental income.
Inheritance and Exit Tax Considerations
For foreign residents with assets in multiple jurisdictions, owning Japanese real estate adds complexity to estate planning. Japan’s inheritance tax applies to Japanese real estate regardless of the decedent’s or heir’s nationality if the property is in Japan. Exit tax (国外転出時課税) applies to financial assets over ¥100 million but not directly to real estate. If you anticipate leaving Japan, discuss the exit planning implications with a tax advisor before committing to a property purchase.
6. RENOSY vs. NISA and iDeCo: Building a Balanced Strategy
Real estate investment and securities investment serve different purposes in a portfolio. They are not directly competing products, but when capital is finite, you need to prioritize.
For a deeper look at NISA and iDeCo specifically, see our guide: Best Investment Account in Japan for Foreign Residents: NISA and iDeCo Explained .
And for long-term financial planning as a foreign resident more broadly: Retirement Planning in Japan as a Foreign Resident .
Here is a framework for thinking about the two approaches:
NISA: Accessible, Liquid, Tax-Advantaged
Japan’s New NISA (introduced in 2024 and continuing through 2026) provides:
- Annual contribution limit of ¥3.6 million (¥1.2M Tsumitate + ¥2.4M Growth)
- Lifetime limit of ¥18 million
- Completely tax-free returns — no tax on dividends, interest, or capital gains within the account
- Full liquidity: you can sell at any time and your annual contribution allowance is restored upon sale
For most expats in Japan at the beginning of their investment journey, maximizing NISA before moving to real estate is a strong default position. The tax-free compounding within NISA is a concrete, guaranteed benefit. With index funds tracking global equities, you get broad diversification in a single vehicle.
楽天証券 (Rakuten Securities) is one of the leading platforms for NISA investing in Japan. It offers a wide fund selection, competitive costs, and an interface that is navigable for English speakers. For expats new to Japanese investment accounts, it is frequently recommended as a starting point.
Open a Rakuten Securities NISA account → (affiliate link)
iDeCo: Tax-Deferred Retirement Savings
iDeCo (individual-type Defined Contribution pension) provides a tax deduction on contributions now, with tax on withdrawal at retirement. Contribution limits vary by employment status (employed at a company with no corporate pension: ¥23,000/month; self-employed: ¥68,000/month). The trade-off is that funds are locked until age 60 (or 75 for recent rule changes).
For expats who plan to remain in Japan long-term and are looking at retirement planning, iDeCo is worth including in the strategy. For those uncertain about their tenure in Japan, the lock-up period is a genuine concern.
A Possible Framework by Stage
Stage 1 (Early years in Japan, building foundation):
- Maximize NISA Tsumitate slot (¥1.2M/year) with a global index fund
- Build emergency fund (6-12 months expenses in liquid JPY)
- Consider iDeCo if long-term Japan residence is planned
Stage 2 (Established, stable income, PR or long-term visa):
- Continue NISA (Growth slot for lump sum equity positions)
- Evaluate real estate if capital allows AND financing is accessible
- Use freee for tax management as complexity increases
Stage 3 (Multiple assets, portfolio management):
- Real estate as one component, not the whole portfolio
- NISA assets provide liquid counterbalance to illiquid property
- Annual kakutei shinkoku with real estate deductions via freee
Real estate and index fund investing are not mutually exclusive. The risk is letting an illiquid property purchase crowd out the tax-advantaged space in NISA, which is capped annually and cannot be retroactively maximized. Always fill NISA before considering leveraged real estate, unless you have highly specific reasons to do otherwise.
7. The Honest Bottom Line: Who Should Consider RENOSY?
RENOSY is a professionally run platform in a legitimate asset class. GA technologies is a publicly listed company with a track record and regulatory obligations. The service model addresses real pain points for investors who want property exposure without active management.
That said, it is not the right product for everyone.
RENOSY is likely worth exploring if:
- You have permanent residency or strong financing eligibility
- You have ¥20–30 million or more in capital, or solid financing capacity alongside an existing financial cushion
- You are already maximizing NISA and looking for additional asset class diversification
- You understand and accept illiquidity as a trade-off for the property’s characteristics
- You have (or can hire) sufficient Japanese language support for contracts and tax filing
- You are thinking in a 10–20+ year time horizon, not 3–5 years
RENOSY is likely not appropriate if:
- You are new to investing and haven’t maximized tax-advantaged accounts (NISA/iDeCo)
- Your visa status makes financing very difficult and you don’t have substantial cash to deploy
- You might leave Japan within the next 5 years
- You cannot comfortably engage with Japanese-language documents or afford professional support
- You are looking for high-liquidity returns
The Tokyo compact apartment market’s fundamentals — urban concentration, persistent rental demand in transit-accessible areas, limited land supply in core wards — are real. They are not fiction. But they also don’t override the basics of investment discipline: know your time horizon, understand your costs, don’t over-leverage, and don’t invest money you cannot afford to have illiquid.
Get Started with RENOSY
If you are at the stage where a consultation makes sense — you have the residency status, the capital capacity, and you want to hear what’s actually available in the market — RENOSY offers free consultations with no obligation to proceed.
[Book a free RENOSY consultation →] (URL TBD — affiliate link coming soon)
Going into the consultation prepared with specific questions — about financing options for your visa category, historical yield data on managed properties, management fee structure, and exit processes — will make the conversation far more productive.
Manage Your Rental Income and Tax Filing
Once you own a rental property, you are in the tax filing business whether you like it or not. freee makes the annual kakutei shinkoku significantly less painful, with support for rental income categorization, depreciation tracking, and tax return generation.
Start managing rental income with freee → (affiliate link)
Calculate your mortgage payment → Mortgage Calculator
Build Your Investment Foundation with NISA
Before or alongside real estate, NISA is the most efficient savings vehicle available to residents of Japan. Rakuten Securities offers a strong platform for index fund investing within NISA, with low costs and a solid selection of domestic and international funds.
Open a NISA account at Rakuten Securities → (affiliate link)
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This article contains affiliate links. If you sign up for a service through a link in this article, we may earn a commission at no additional cost to you. All opinions are our own. This article is for informational purposes only and does not constitute financial or tax advice. Consult a qualified financial advisor and tax accountant before making investment decisions.