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Unofficial English explanation: Japanese laws and official Japanese-language sources control.

Asbestos CheckEvidence-based checks before construction work in Japan

Survey obligation

When is a pre-work asbestos survey required?

For demolition or renovation work, the safest planning assumption is to check the pre-work survey requirement before existing material is disturbed—even when the project is small.

This is an unofficial English explanation. Japanese laws and official Japanese-language sources control.

Why 80 m² and ¥1 million cause confusion

Those figures are used in particular reporting rules. Falling below a reporting threshold is not the same as proving that no pre-work survey, record, display or local check applies.

Narrow situations still need facts

New-material-only work with no effect on existing material and very limited activities may be treated differently, but the facts and absence of surrounding damage must be documented. This tool does not certify an exception.

Who should confirm

The client should provide records; the principal contractor organizes compliance; a qualified surveyor handles the technical survey scope; the responsible authority confirms filing procedures.

Example: a quote answers only the reporting question

Suppose a contractor says a small renovation is below a reporting threshold, but the quotation does not mention the existing materials that will be affected. The statement about reporting leaves the survey question unanswered. This is a hypothetical communication example, not a ruling on that project.

Ask: Which existing materials will this work affect, what survey evidence covers them, and where is that conclusion recorded? Then ask separately which reporting or notice procedures were checked and by whom. Keep each answer beside the current work description rather than treating a single yes-or-no reply as covering every procedure.

Primary Japanese sources

Check the current linked publication and its scope before relying on a claim.

View the full source ledger

Scope and limitations

This is an unofficial English explanation for navigation and planning. It is not a site survey, legal opinion, qualified review, government filing, approval, or price quotation.

Continue to the related guidance below, then compare the facts with the official Japanese-language source and the responsible qualified person or authority.

Editorial responsibility and update history

Operator: 石綿チェック運営事務局. This is an independent information service that explains public sources; it does not represent a qualified review or government approval.

Last reviewed: 2026-09-08. See the editorial policy for change history and corrections.

Common questions

Does a ¥900,000 renovation need no survey?

That conclusion cannot be drawn from price alone. The work and effect on existing materials still need to be checked.