(That is... an answer he never would have come up with on his own. Okay, maybe he could have figured out it had something to do with mold just because that's such a timeless issue but he never would have thought about.... building codes and cost and decisions. He raises a brow. He hadn't expected that at all and it makes him rethink some of the buildings he's seen in the past.)

... Huh.

(Just "huh." As for thinking like a thief, that's more in Hizen's area of expertise. He isn't a thief. He doesn't steal. But it's adjacent to the sort of shady jobs he usually does.)

If he's from the area, the owners and everyone probably would've recognized him. But there's no way he could've known there was gonna be a window or that it'd open all the way.

(Most of these windows only open partially to prevent people from breaking in...)

I'm willin' to bet the guy's been here at least once. Maybe he didn't scout the front 'cause getting in wasn't the problem but he definitely made sure to have an escape route.