When faced with a security deposit (or guarantee deposit) that isn't returned after moving out, should you consult with an attorney or pursue a small claims court lawsuit? This real estate expert compares the costs, timelines, difficulty levels, and success rates of both approaches and recommends the best solution for different situations.
Reviewed by: Nobuyuki MoriPresident, M-Assets Co., Ltd. / Licensed Real Estate Transaction Specialist (Miyagi #018212)
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Failing to receive all or most of your security deposit (or guarantee deposit) after moving out—or being hit with unexpected deduction fees—is one of the most frequent complaints in rental housing.
Cases where tenants face situations like "my ¥100,000 security deposit was entirely deducted" or "I was charged ¥300,000 in move-out costs" often lead tenants to consider legal action. Your main options are "attorney consultation (certified mail notice and lawsuit)" and "small claims court." This article compares both approaches and offers situation-specific guidance.
Before pursuing legal remedies, complete the following preparations.
The Ministry's "Guidelines on Restoration to Original Condition and Related Disputes" establishes that normal wear and tear and aging are the landlord's responsibility. Use these guidelines as your starting point to verify whether the charges are reasonable.
First, ask the management company in writing to "provide a written explanation of the basis for these charges." If unsatisfied, formally object in writing. Verbal complaints leave no record—always submit written objections via email or letter.
| Approach | Cost Range |
|---|---|
| Certified mail notice only | ¥30,000–¥80,000 |
| Settlement negotiation | ¥100,000–¥250,000 |
| Civil litigation | ¥200,000–¥500,000+ |
For smaller deposits (¥100,000–¥200,000), attorney costs can exceed your recovery. Always verify cost-effectiveness first.
Small claims court handles monetary claims up to ¥600,000 and allows self-representation without an attorney. Most cases are resolved with a single hearing and judgment handed down on the same day.
| Item | Cost |
|---|---|
| Court filing fee (¥600,000 claim) | ~¥6,000 |
| Postage stamps | ¥1,000–¥2,000 |
| Evidence copying and preparation | A few thousand yen |
| Total | ~¥10,000–¥15,000 |
Self-representation keeps costs well under ¥20,000, which is a major advantage.
| Factor | Attorney (Litigation) | Small Claims (Self-Representation) |
|---|---|---|
| Cost | ¥100,000–¥500,000+ | ¥10,000–¥20,000 |
| Difficulty | Low (attorney handles it) | Moderate (you prepare documents) |
| Timeline | Several months to 1+ year | 1–2 months |
| Claim Limit | None | ¥600,000 maximum |
| Best For | Large or complex claims | Small claims with clear evidence |
| Emotional Burden | Low (delegated) | Moderate (you appear in court) |
| Situation | Recommended Approach |
|---|---|
| Claim ¥200,000 or less | Small claims court (best cost-benefit) |
| Claim ¥300,000–¥600,000 | Small claims court or attorney (consult for free) |
| Claim exceeds ¥600,000 | Attorney required |
| Strong evidence collected | Small claims court is viable solo |
| Weak evidence or complex case | Consult attorney for strategy |
| Dealing with large property management firm | Attorney provides peace of mind |
The right approach to resolving a security deposit dispute depends on claim amount, evidence quality, and the landlord's size. For claims under ¥600,000 with solid evidence, small claims court (self-filed, ¥10,000–¥20,000 total) offers the best value. For larger or more complex cases where the other party is uncooperative, attorney representation (certified notice → settlement negotiation → litigation) provides a structured, reliable path. Either way, thorough documentation at move-in and move-out (photos, written records) dramatically improves your position.
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