Who determines which end of the street is number 1? Is it also the same person who decides which side of the street is odd vs even?

Question

Had the thought pop into my head randomly the other day. I’m assuming this is a town planning thing, but is there any sort of a guideline for making these decisions?

In: Other

Answer 1

In NL it starts from the city centre.
Left is odd.

Highways in order, extra exits are assigned a letter.
So 23a for one that is added between 23 and 24.