中高層ちゅうこうそう住居じゅうきょ専用せんよう地域ちいきなら
chūkōsō jūkyosen'yōchiikinara

Noun
Da Copula

The "-nara" conditional form ("if/when…") of 中高層住居専用地域

1. If it’s a low-rise residential exclusive zone; When it’s a low-rise residential exclusive zone

Nara Conditional
Law