Questions!

[Tokki 토끼]

1. Should I put the offices or Forestry on the other side of the road?
2. If you build a wall on the very edge of the map (didn't check if its possible or not; probably not), can you not see the exit hole of a tunnel because it's off-map?
3. Do i need the other half of the road? The vehicles always come on the left side of the road and it would be helpful if I could expand the area on the right side of the road to put larger offices or more forestry space.

[chalked.up]

1. Offices can go anywhere. For convenience's sake, you might want to put your Foreman near your workshop and your psychologists near your common room. For your forestry, think in terms of travel time - new trees delivered to the forestry, cut trees from forestry to workshop.
2. You can't build on the outermost square of the map. You're limited to one row/column in from the edge. Any tunnel that goes through a wall on the edge will have an escape hole on the outermost square (where you can't build).
3. You can use the right side of the road. In my large builds, I have a forestry on the right side. If you browse the Steam workshop, you'll see segregated prisons with whole units on the right side. It's really up to you.