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.
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.
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.