I think the same rules generally apply when one is in one's own neighborhood and when one is in a different neighborhood.
It's rude to make unnecessary noise, particularly for a prolonged period of time.
It's rude to make and leave a mess. (Pet waste, cigarette butts, wrappers, discarded toys, empty beverage containers, etc.)
It's rude to violate someone's privacy by looking into their windows or peering over the fence from the sidewalk.
It's rude to block the sidewalk. (Obviously, most people will give you a pass in an emergency, like if you or your child takes a bad fall.)
It's rude to tease and torment someone's pets.
It's rude to leave your car alarm blaring for half an hour.
The difference in your own neighborhood is that presumably, you know the homeowner. If your stereo is a bit too loud, they'll probably feel comfortable asking you to turn it down. If your kids want to practice skateboarding, you can ask your neighbors if they mind you setting up the temporary ramp. If they walk past and glance at the house when you're looking out the window, you just wave at each other. If you don't figure out that it's your car alarm going off, your neighbor will probably recognize that it's your car and drop you a line letting you know. Basically, the interactions can usually include normal, familiar communication.