既存 きそん 適格 てきかく建築 けんちく ものでしょう
kisonfuteki kaku kenchikumonodeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 既存不適格建築物

1. Probably an ineligible building.; Likely a non-conforming building.

Polite
Presumptive
Conjecture