Is that some sort of zoning thing in NYC? I know a county around me is already using drones to check for structures/additions that aren't listed for tax purposes.
Due to the dense packing of people in NYC, there are very few places that allow you to have any kind of open flame, including in a barbecue or grill. I think the requirement is that your grill has to be at least 10 feet from any flammable material, including building walls, other furniture, and pretty much anything not made of concrete or metal. You can't do it on a terrace or a balcony either. Almost nowhere in NYC do you have a 10 foot radius with nothing flammable in it.
- charcoal - no roofs or balconies, but terraces and backyards are okay. You do need 10 feet of clearance from walls and fences, but this is less rare than you might think. I’ve lived in two places that met this criteria and have a few friends that did as well
- propane - illegal in most circumstances except with a very small propane tank
- natural gas - legal in all circumstances as long as installed by a city licensed installer.
It’s true that it’s not as common as it is in the suburbs, but essentially every building built in the last 20 years or major renovations ends up including one or more grills.