Guarantors in Japan: Solutions for Foreign Renters

Japan's Traditional Co-Signer System

What Is a Personal Co-Signer (連帯保証人)?

A personal co-signer (連帯保証人) shares liability for rent and damage with the tenant. If the tenant stops paying, the co-signer has to cover it — and unlike an ordinary guarantor, they cannot insist the landlord chase the tenant first. Since April 2020, however, the Civil Code requires that liability to be capped at a written maximum amount (極度額), and a guarantee with no stated cap is not enforceable. The commitment is therefore bounded, but it is still real, which is why friends hesitate.

Why Does Japan Have This System?

It stems from Japan's traditional social trust framework: landlords, when accepting a stranger as a tenant, need a "credit anchor." In the past, this was usually a family member (parent, sibling) who would ensure accountability if anything went wrong.

Why Do Foreigners Struggle to Find a Co-Signer?

1. No Japanese relatives: Foreigners typically don't have family members in Japan
2. Japanese friends are unwilling to take on the risk: Joint liability is a major financial commitment — even close friends may be reluctant
3. Overseas co-signers not accepted: Most landlords won't accept a co-signer based outside Japan
4. Employers don't provide: Smaller employers may be unwilling to act as a guarantor for working holiday participants

Rental Guarantor Companies (家賃保証会社): The Modern Solution

What Is a Rental Guarantor Company (家賃保証会社)?

A rental guarantor company (家賃保証会社) is a commercial service that replaces a personal co-signer. The tenant pays a fee, and the guarantor company promises to compensate the landlord if the tenant can't pay rent.

After Japan's 2020 Civil Code revision, the guarantor company model became more widespread. Personal guarantees are harder to enforce without a stated cap, so landlords now prefer a company that pays out and follows up on its own. Most listings today ask you to pass a guarantor company's screening instead of producing a co-signer.

Guarantor Company Screening Criteria

Major Guarantor Companies

Since 2017, rent guarantee businesses have been able to register with the Ministry of Land, Infrastructure, Transport and Tourism, which publishes the register — and a separate list flagging the companies that handle languages other than Japanese. Registration is voluntary, so plenty of legitimate firms are absent, but it is the fastest way to check who is used to foreign tenants.

1. 全保連 (Zenhoren)

• Features: One of Japan's largest rental guarantor companies; widely used nationwide
• Foreign applicant screening: Relatively strict — requires stable income and valid visa
• Fees: 30%–50% of one month's rent; annual renewal ~¥10,000

2. ORICO フォレントインシュア (ORICO FS)

• Features: Many affiliated properties nationwide; high landlord acceptance
• Foreign applicant screening: Standard
• Fees: 50% of first-year monthly rent; annual renewal 10% of monthly rent

3. SBI Guaranty (SBI 保証)

• Features: SBI Group subsidiary; relatively transparent
• Foreign applicant screening: Standard
• Fees: First year from ¥15,000 flat; annual renewal ¥10,000

4. ROOM iD (ルームiD) — Highly Recommended for Foreigners

• Features: Built around foreign residents; multilingual support (Chinese, English, Korean, and others)
• Foreign applicant screening: Accommodating — applications are accepted soon after arrival
• Fees: 30%–50% of one month's rent
• Affiliated properties: Major cities nationwide; more foreign-friendly properties

5. Global Trust Networks (GTN) — Foreigner-Exclusive

• Features: Designed exclusively for foreigners; not just a guarantor company but also a platform for finding foreigner-friendly properties
• Services for foreigners: Multilingual contract translation, application support
• Properties: Has its own foreigner-exclusive apartment inventory

Guarantor Fee Calculation Example

For a 1K apartment with ¥80,000/month rent (2-year lease):

Compared to using a personal co-signer (free), guarantor companies add an extra cost — but for foreigners, this is the most practical option.

Housing Options That Don't Require a Guarantor

If you can't pass a guarantor company's screening or don't want to pay the fee, these options don't require a personal guarantor:

1. Share House

Share houses are managed directly by the operating company — no guarantor is typically required. Just pay the first month's rent and management fee to move in.

• Rent: ¥40,000–¥80,000/month (utilities usually included)
• Upfront costs: Low — usually just 1–2 months of costs to move in
• Downsides: Shared bathroom and kitchen; less privacy

For more detail, see: Apartment vs. Share House in Japan

2. Foreigner-Specialist Apartments (外国人専用マンション)

Some real estate companies and management firms offer apartments designed specifically for foreign residents, with adjusted screening criteria:

• Usually accept a copy of your Residence Card in lieu of a guarantor
• Multilingual contracts provided
• Lower upfront costs in some cases

3. UR Rental Housing — the Lowest-Friction Route

Rental housing owned and managed by the Urban Renaissance Agency (UR) is the closest thing to a shortcut for foreign renters. UR is a public corporation, not a private landlord, and its stock is separate from municipal 公営住宅 — there is no low-income test, and rent is set by UR rather than by your salary.

What UR offers

Eligibility

Household members' incomes can be combined, and applicants who expect to stop working during the lease can sometimes pre-pay rent instead.

Where the housing is

UR's stock is heaviest in outer wards and the commuter belt — large estates in Adachi, Katsushika, Nerima and western Tokyo, plus thousands of units across Saitama, Chiba and Kanagawa. There are newer central estates as well (Toyosu is the famous one), and those are heavily oversubscribed, with single-person units going fastest.

Everything is listed at ur-net.go.jp, and you apply through UR directly rather than through an estate agent.

4. Monthly Rental Apartments (マンスリーマンション)

Short-term furnished apartments with leases from as short as 1 month — ideal for those who just arrived in Japan and haven't yet secured long-term housing.

• Rent: approximately ¥60,000–¥150,000/month (varies by location and room type)
• Pros: No guarantor needed, quick move-in, fully equipped
• Cons: Monthly rate is much higher than a long-term lease

Common Questions for Foreign Renters

Q: Can a working holiday participant (1-year visa) pass a guarantor company screening?

Yes, but be mindful of your visa validity. Many guarantor companies require your visa to remain valid beyond the lease term. With a 1-year working holiday visa, you may only be able to sign a ~6-month lease, or need to use a company (like GTN or ROOM iD) that doesn't apply that restriction.

Q: Can my parents overseas be my co-signer?

Generally no. Japan's co-signer system requires the guarantor to reside in Japan, and most landlords won't accept an overseas guarantor. Even if a landlord agrees, pursuing the guarantor later is extremely difficult in practice. The guarantor company route is strongly recommended.

Q: Can I negotiate the guarantor company's fee?

Guarantor company fees are set by the company and are usually not negotiable. But the fee is not always the tenant's to pay: on a property that has been vacant for a while, the agent may be able to get the landlord to absorb the first-year charge, or to switch you to a cheaper provider. It is worth asking before you sign.

Final Takeaway

The guarantor question is the single biggest reason foreigners get rejected for apartments in Japan, and it has a practical answer: look for listings that use a guarantor company, expect to pay 30%–50% of one month's rent plus a yearly renewal, and treat UR or a share house as your fallback if screening does not go your way.

A Japanese friend is not required, and neither is an employer. What actually decides the outcome is steady income, valid status that outlasts the lease, and a phone number the company can reach you on.