A real estate expert thoroughly explains the five most commonly overlooked items in the Important Matter Disclosure Form (often called the "重説") that must be provided before signing a rental agreement. This article introduces key verification points to prevent post-contract disputes and proper solutions when questions arise.

Reviewed by: Nobuyuki MoriPresident, M-Assets Co., Ltd. / Licensed Real Estate Transaction Specialist (Miyagi #018212)
The Important Terms & Conditions Document (Jūyō Jikō Setsumei-sho) is explained by a licensed real estate agent when you sign a rental lease. This article breaks down this complex legal document in plain language and explains the key points you must verify before signing.
Even if your lease renewal is denied or you receive an eviction notice, tenants have legal protections under Japanese law. This guide explains the legal justification requirements, notification deadlines, eviction compensation standards, and countermeasures you should know about.
Rental contracts in Japan typically require guarantors or guarantor companies. This guide explains the differences between joint guarantors and guarantor companies, how to rent without a guarantor, and which guarantor companies accept foreign nationals.
When renting a property, a document called the "Important Matter Disclosure Form" (often abbreviated as "重説") is provided and explained by a licensed real estate agent (宅建士). It is a legally mandated document based on Article 35 of the Real Estate Agent Law, and includes comprehensive important information about the property and the contract.
Many people sign without thoroughly reading it, but it contains numerous items where "I didn't know" is not a valid excuse after signing. This article focuses on explaining five particularly easy-to-overlook items.
The basic step is to cross-check the equipment listed in the "Equipment List" section of the disclosure form with the equipment actually in the room. However, many people overlook the notation "as is in the current state" (現況有姿).
What Does "As Is" Mean?
"Delivery as is" means that even if equipment such as air conditioners or water heaters are installed, "their operation is not guaranteed." In other words, if the air conditioner breaks down after you move in, the landlord may have no obligation to repair or replace it.
What You Should Verify
Under civil law, repairs due to normal wear and tear (deterioration from age) are typically the landlord's responsibility, while repairs from tenant negligence are the tenant's responsibility. However, rental agreements can include special clauses that may change this division of responsibility.
Examples of Special Clauses That Require Attention
Relationship to Ministry of Land, Infrastructure, Transport and Tourism Guidelines
According to the Ministry of Land, Infrastructure, Transport and Tourism's "Guidelines on Restoration to Original Condition Disputes," cleaning costs can be the tenant's responsibility if agreed upon. However, for special clauses to be valid, two conditions must be met: "the tenant understands and agrees to the clause" and "the clause is clearly stated."
If special clauses are listed in the disclosure form, always review them carefully. If you don't agree, negotiate or consider a different property.
The disclosure form includes the "land use classification" where the property is located. This is a zoning category under the Urban Planning Law that determines what types of buildings can be constructed in the future.
Land Use Classifications Rental Tenants Should Be Aware Of
| Land Use Classification | Characteristics | Points to Note |
|---|---|---|
| Low-Rise Residential District (Type 1) | Quiet residential neighborhood | Large commercial facilities cannot be built |
| Commercial / Neighborhood Commercial District | High convenience | Noise and heavy foot traffic at night may occur |
| Industrial District | Factories may be adjacent | Risk of noise and odors |
The disclosure may also include information about "asbestos use," "earthquake resistance assessment details," and "past land use (such as soil contamination)." For older properties, always verify this information.
The terms regarding the lease period, renewal, and termination significantly impact your life after move-in.
Key Items to Verify
Lease Period and Renewal
Notice Period for Termination
Early Termination Penalties
Pay particular attention to fixed-term leases. Since they cannot be renewed and you must vacate when the term expires, choosing a standard lease is important if you plan to stay long-term.
The disclosure form includes usage terms and costs for ancillary facilities outside the room, such as parking lots, bicycle parking, motorcycle parking, and storage units. Overlooking these details can result in unexpected expenses after move-in.
Common Overlooked Scenarios
About Internet Equipment
Many modern rental properties advertise "free internet," but it's important to check whether the disclosure form's "common equipment" section mentions fiber optics and guarantees internet speed. There are cases where free internet is actually too slow (just a few megabits) to be usable.
Request a Copy in Advance
While the disclosure form is typically provided on the day of contract signing, you can request it in advance. Having time to review it beforehand helps prevent oversights.
Ask Questions About Anything Unclear
During or after the explanation of the disclosure form, you'll be asked "Do you have any questions?" Don't hesitate—clarify all doubts before signing. Once you've signed, a record exists that you received the explanation, making it extremely difficult to object later.
The Important Matter Disclosure Form requires careful attention to five key items: equipment performance guarantees, repair responsibility clauses, land use classification and surrounding environment, renewal and termination terms, and ancillary facility costs. By obtaining a copy in advance and clarifying all questions before signing, you can significantly reduce post-move-in disputes.
不動産ネットワーク
投資物件・賃貸住宅・テナント・運営会社をつなぐ不動産4サイト連携。
Related Areas
引越し後の車庫証明変更申請ガイド——手続きの流れ・必要書類・期限を徹底解説
鳥取の賃貸エリアガイド【2026年版】——家賃相場・住みやすさ・移住事情を徹底解説
甲府・山梨の賃貸エリアガイド【2026年版】——家賃相場・住みやすさ・移住支援を徹底解説
Floor Slab Thickness and Upstairs Noise Problems—Structural Reasons Why "Thump" Impact Sounds Resonate in Rental Apartments and Tips for Choosing Properties
Maebashi & Gunma Rental Area Guide [2026 Edition]—Complete Comparison of Average Rents and Livability by District