長期 ちょうき優良 ゆうりょう住宅 じゅうたくだったら
chōki yūryōjūtakudattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 長期優良住宅

1. If it were a long-term excellent house; If it was a long-term excellent house

Tara Conditional