Act on Building Unit Ownership
建物の区分所有等に関する法律
The amendments to this law, and what each one changes, provision by provision: the wording before and after, in Japanese and in English, with the words that change marked.
Promulgated, not yet in force
No amendment to this law is waiting to come into force.
Now in force
1 April 2026
In force
Amended by
Act Partially Amending the Act on Building Unit Ownership, etc. to Facilitate Management and Revitalization of Aging Condominiums, etc. (Act No. 47 of 2025)
老朽化マンション等の管理及び再生の円滑化等を図るための建物の区分所有等に関する法律等の一部を改正する法律
61 provisions changed · 274 provisions added · 10 provisions removed · 6 provisions in the supplementary provisions
See what changes
e-Gov records 8 earlier amendments to this law. Their dates and amending laws are listed on the page about this law; what each of them changed is not on this site yet.