According to Portland restaurant owners, dealing with the city's evolving rules on outdoor dining is incredibly frustrating. Not surprising, and I'm sure it's a mess, though I'm not sure the examples cited here are ideal for illustrating the point.

Restaurant Owners Say Red Tape Is Strangling Outdoor Dining
After encouraging their construction, the city of Portland wants a number of elaborate "dining sheds" gone because they block sidewalks and pose fire hazards.
wweek.com