I was trying to understand why you said there was no loft on that house, that's all.
To all intents and purposes, it looks like a 'proper job' of converting the loft in to a livable space. There's no flat roof extension - some surveyors might even say, 'well, this isn't a bedroom...'.
This one?
https://microcosm.app/out/7H2qi
I guess so, in that the structure hasn't been done, it's just been converted in to a livable space.