It's just a matter of "writing" to the municipality explaining why, when and for what is needed. Under 50sqm it seems the process is pretty straightforward.
But then it would make sense to have a proper photographer and not myself with my old iPhone, if I can be granted the permission.
That means that I'll never ask for it (not being resident there I can imagine will not help the process...).

2010 Violet Aero Supersports | 2012 Green Vantage S Roadster