Check your local zoning laws.
You can overlook your neighbors garden. You are not allowed to go in your neighbors garden physically without their permission.
Check with your local government office: city, county, etc.
Yes
move
Garden Hose, your own or neighbors?
Of course not! You have no right to do anything to a neighbor's yard or garden without their permission.
no its not
Neighbors may play music in their garden. Typically, noise laws do not go into effect until the late evening hours. Contact your local authorities to be sure.
it will most likely go to your neighbors garden or under a hedge or even in a small tree it will most likely go to your neighbors garden or under a hedge or even in a small tree
If it is without their permission; yes it is illegal.
A party wall is a wall that divides two adjoining buildings or two adjoining units in a building. In the case of buildings, it usually lies along the boundary line that separates the properties. In the UK a party wall can be a garden wall that runs along a property line. One owner cannot do anything to the party wall that would damage it or affect the intregrity of the wall. See related link for information about the Party Wall Act in the UK.
No, it is illegal in the UK.