Invite your closest neighbours if it's going to be loud or late. If you don't really like your neighbours, invite them anyway, but tell them it's going to start at start time plus one hour. If you hate your neighbours, casually tell them about the party and complain about wishing you had more room for all of the people who are attending.

One of my neighbours, Pentecostal Minister, no less, hasn't been able to figure out this bit of manners yet for late night endings. Say your goodbyes IN the house with the door SHUT, thereby keeping conversation outdoors to a minimum. Mention that they should refrain from honking their car horns as a goodbye gesture because, 1) sick neighbour; 2) nasty neighbour; 3) young, sick, nasty neighbour children; 4) you will go to their house late at night and honk your car horn.