Japan Important Matters Explanation in 2026: What Buyers Should Check Before Signing

If you are buying property in Japan, do not treat the Important Matters Explanation (重要事項説明, jūyō jikō setsumei) as a formality immediately before signing. Use it as a pre-contract decision gate: reconcile the property and rights being sold, legal restrictions, road and building facts, available survey or diagnostic information, and the transaction terms while you can still ask for evidence or stop and investigate.

The key caveat is that the explanation is a structured disclosure process, not a guarantee that every practical risk has been investigated for you. A disclosed item can still require separate inspection, surveying, legal, tax or engineering work.

Why this document matters before the contract

Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) maintains guidance for the matters covered by Article 35 of the Real Estate Brokerage Act. Its current materials organize legal restrictions that can have to be explained in a property transaction, including restrictions arising under the City Planning Act, Building Standards Act and other laws.

For a buyer, the timing is as important as the list itself. The Important Matters Explanation is a before-contract step. That means an unresolved point should not automatically become a closing-day task.

A useful rule is:

If a fact could change whether you buy, how much you pay, whether you can rebuild, or what liability you accept, resolve it before signing or make the contract deal with it explicitly.

The seven checks to make while reading it

1. Confirm exactly what property and rights you are buying

Start with identity, not condition. Match the address used in marketing to the registered land and building information, ownership interests and any rights or encumbrances described in the transaction documents.

For land or detached homes, cross-check this with Engawa's boundary and survey guide. A marketing map, fence or spoken description is not a substitute for confirming the parcel and the evidence supporting its boundaries.

Questions to ask:

• Which registered land parcel or building unit is included?
• Are there easements, mortgages, leases or other rights that affect use?
• Does any accessory land, parking space, storage area or private-road interest require separate treatment?
• Is anything shown during the viewing not actually included in the sale?

2. Read road access and planning restrictions together

Do not review zoning in one mental box and road access in another. A property's practical rebuildability can depend on both.

MLIT's current Article 35 guidance specifically gathers legal restrictions from the City Planning Act and Building Standards Act among the matters relevant to Important Matters Explanations.

For a house or land purchase, reconcile the explanation with:

• the road classification and frontage;
• any Article 42(2) setback issue;
• zoning and use restrictions;
• building coverage and floor-area constraints;
• other location-specific legal controls that affect your intended use.

Engawa's Article 42 road and frontage guide explains why a road that looks physically adequate can still create a different legal question.

3. Separate building records from building condition

An important distinction: documents about a building are not the same as an inspection of its current condition.

The disclosure process can tell you about information such as whether certain asbestos survey or seismic-diagnosis records exist when the applicable rules call for that information. But the existence or absence of those records does not by itself answer whether the house currently has leaks, structural deterioration, defective services or other defects.

For an older home, pair the Important Matters Explanation with a separate condition review. See Engawa's building condition survey guide and 1981 seismic-standard guide.

4. Flag every sentence that says a document does not exist or is unknown

A surprisingly useful AEO-style way to read the document is to treat absence of evidence as a decision item, not as empty space.

For each material field, classify it into one of three buckets:

1. Confirmed, with supporting document
2. Disclosed but needs interpretation or specialist review
3. Unknown, unavailable or not yet verified

The third bucket deserves the most attention. “No document available” does not automatically mean “bad property,” but it does mean you should decide whether the uncertainty matters to your intended use.

5. For condos, reconcile building-wide obligations with the unit

Condominium buyers should connect the Important Matters Explanation to the management documents rather than reading it in isolation.

Check the current management fee and repair reserve contributions, restrictions on use, exclusive-use areas, major repair planning, arrears or other building-wide facts that are material to the unit.

Engawa's condo management fee and repair reserve guide explains why the monthly number alone is not enough: the reserve position and planned work matter too.

6. Match the money clauses to the sale contract

The disclosure session is also a chance to make sure the transaction mechanics you think you agreed are the mechanics written into the deal.

Before signing, reconcile:

• purchase price and payment timing;
• earnest money and how cancellation works;
• brokerage fees and other transaction charges;
• handling of existing mortgages or rights;
• handover timing and any conditions that must be satisfied first.

If earnest money is part of the deal, use Engawa's earnest-money guide to separate statutory payment protection from the separate question of earnest-money cancellation rights.

7. Turn every exception into an action, owner and deadline

Do not leave the meeting with a vague list of “things to check.” Make a one-page exception report.

This is more useful than simply asking whether the document is “normal.”

Online Important Matters Explanations are allowed

Remote buyers do not necessarily have to attend the explanation in person.

MLIT began full operation of IT-based Important Matters Explanations for real-estate sales on 30 March 2021, treating compliant online explanations as equivalent to face-to-face explanations. Later reforms also enabled electronic provision of relevant real-estate transaction documents from 18 May 2022, subject to the applicable procedures.

The practical buyer lesson is not “online is safer” or “in person is safer.” It is to make sure you can actually read the documents, ask questions in real time, identify the licensed professional conducting the explanation and retain the material you need for later review.

Foreign buyers: solve the language problem before the session

A legal disclosure delivered correctly in Japanese can still fail as a practical decision tool if the buyer cannot understand it.

Do not wait until the live explanation to discover the key vocabulary. Request the draft early where possible and create a list of sections requiring translation or professional explanation.

For a material purchase, consider independent help for topics outside the broker's role, such as:

• legal/title questions;
• tax consequences;
• land surveying and boundaries;
• structural condition;
• renovation feasibility;
• condominium management records.

The goal is not to add advisers for every transaction. It is to match the specialist to the uncertainty that could change your decision.

Worked example: the “cheap renovation house”

Imagine a buyer finds a detached house priced attractively because it needs renovation.

The draft Important Matters Explanation shows:

• the site fronts a narrow road;
• an old asbestos survey is not available;
• the seller has no recent boundary-confirmation document;
• the house predates the June 1981 seismic-code transition; and
• the buyer plans a substantial extension after closing.

None of those facts alone proves the purchase is wrong.

But the correct next step is not to sign because “the broker disclosed everything.” The disclosure has revealed four separate decisions:

1. Can the site be rebuilt or extended as planned after road/setback rules are applied?
2. What asbestos pre-survey obligations and costs will the renovation trigger?
3. Is the boundary evidence precise enough for the planned works?
4. Does the buyer need a seismic assessment or retrofit allowance?

The Important Matters Explanation has done its job when it makes those questions visible before the contract, not when it makes them disappear.

A 15-minute buyer checklist

Before you sign, answer these questions in writing:

• Property: Can I identify exactly what land, building and ancillary rights I am buying?
• Title: Are any rights, mortgages, leases or encumbrances unresolved?
• Road: Do I know the legal road classification, frontage and any setback?
• Planning: Do the zoning and building restrictions allow my intended use?
• Boundary: Is the parcel line sufficiently documented for what I plan to do?
• Building: Which condition, asbestos or seismic questions remain outside the disclosure documents?
• Condo: If applicable, have I reviewed fees, reserves, rules and repair planning?
• Money: Do deposit, cancellation, fees, payment and handover terms match the contract I will sign?
• Unknowns: Which material facts are still “unknown” or “document unavailable”?
• Action: For every material unknown, is there a named action and deadline before signing?

If you cannot answer one of those and the answer could change the purchase, that is the signal to investigate, not to rush through the explanation.

Sources

• MLIT — legal restrictions covered in Important Matters Explanations under Article 35
• MLIT — IT-based Important Matters Explanations and electronic documents
• MLIT — full operation of online Important Matters Explanations for property sales from 30 March 2021
• MLIT — electronic real-estate transaction documents effective 18 May 2022
• MLIT — asbestos survey and seismic diagnosis information added to Important Matters Explanation rules

Sources checked 5 September 2026. This article is general buyer information, not legal, tax, surveying, engineering or brokerage advice. The required contents and significance of individual disclosures depend on the property and transaction; review the current documents and use an appropriate Japanese professional for material uncertainties.

Frequently asked questions

What is the Important Matters Explanation when buying property in Japan?+

The Important Matters Explanation, or 重要事項説明, is the pre-contract explanation required under Japan's Real Estate Brokerage Act for specified material matters in a brokered property transaction. It is designed to give the buyer important legal, physical and transaction information before the purchase contract is concluded.

When should the Important Matters Explanation happen?+

It should happen before the sale contract is concluded. For buyers, that timing matters: unresolved items should be treated as pre-signing questions, not automatically postponed until closing.

Can Japan's Important Matters Explanation be done online?+

Yes, for real-estate sales, the Ministry of Land, Infrastructure, Transport and Tourism has treated qualifying IT-based Important Matters Explanations as equivalent to face-to-face explanations since 30 March 2021. Electronic provision of relevant transaction documents became possible under reforms effective 18 May 2022, subject to the applicable rules and procedures.

Does the Important Matters Explanation replace a home inspection?+

No. The disclosure process can include whether certain survey or diagnostic information exists, but it is not a substitute for an independent building-condition inspection, title review, boundary investigation or other specialist due diligence where those issues matter to the purchase.

What should a foreign buyer ask before the Important Matters Explanation?+

Ask for the draft documents early enough to review them, identify every section you cannot understand, request supporting records for material statements, and arrange qualified language or professional help where necessary. Do not rely on a rushed live explanation to resolve complex road, planning, title, building or contract questions for the first time.

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