alt Hacker NewsIt's often easier to get retroactive planning permission, and I suspect an underground bunker isn't as likely to get denied as something more visible.
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sharpshadow • today at 11:35 AM
Probably so in foresight that burrowing an airplane would be quite a long dispute to start with.
It doesn't look dense urban, things are very often more relaxed in semi rural areas and low density zones; further he has existing underground structures that I would guess have already been approved.
If I had to, I'd bet he's had a conversation with a local planner and had a nod and a wink already.