Sounds like hawt Redmond on Seattle action, more accurately.
The 'locals' in such areas don't usually reach for their attorney-on-speed-dial for such matters, to keep long term relationships friendly and discretion for building on their own property robust.
I like the construction - minimal foundation footprint, small house design, simple materials, solar roof, quick construction (for a shorter duration project and minimal disruption to the community - usually). Kundig'ss other work is really cool. He's definitely a boon to the small house/minimalist movement. I wish more folks would follow his lead.
Anyway, welcome to neo modernism. It's not going away, so hate it if you must - but that's going to be increasingly wasted energy as design and construction continues to move into the future. Sure, I'll miss the fake 2 story entry columns, the gable to the Nth Power rooflines, and mauve neighborhoods of the burbian 90s, but what's a brother to do?
I suppose you'd have to sit in the thing and gaze out to really assess it's aesthetics. Judging from the pics, that's probably a really great experience.