Call the police! If it's on your side, you have every right to make changes to it.
What do y call a opening fence
The first step in painting a face white is to use a primer on the wood. Painting the fence will require several coats which should be applied evenly to ensure a good finish.
A geometric painting
a fence
Call someone to help you.
Picket
Provenance
A painting of part of the countryside could be known as a scenic painting.
weir
You call it a picket.
Fence height would be governed by local building codes or ordinances. You should call your Town Hall for information.