Answer:
Built of metal or wood to divide. It will make us good neighbors, if you stay on your side. What is it?
Take one royal word in the plural and make it singular by adding one letter
Most people need it, some ask for it, some give it, but almost nobody takes it. What is it?
I am a piece of paper that takes most people 3 or 4 years to get. What am I?
It's what light turns into in the night
I am a room that has a roof but no walls. What am I?