long-term quality housing; long-life quality housing
A Japanese government-certified designation for housing built to high durability, earthquake resistance, energy efficiency, and maintenance standards, intended for long-term, multigenerational use.
To receive certification as long-term quality housing, strict standards must be met.
This apartment building was constructed as long-term quality housing.
耐震住宅 focuses specifically on earthquake resistance, while 長期優良住宅 covers broader durability and quality standards.
エコ住宅 emphasizes environmental friendliness and energy efficiency, whereas 長期優良住宅 includes these as part of a wider set of long-term performance criteria.
A compound of 長期 (long-term), 優良 (excellent, superior), and 住宅 (housing). The term was established as part of Japan's Act on the Promotion of Long-Term Quality Housing (長期優良住宅の普及の促進に関する法律) enacted in 2008.