Can a Residential area grow in either direction? I understand that for an Imdustrial or Commercial you must retain the action spaces on the same board space (i.e. The $1 commercial space can't move). However for a Residential am I allowed to expand on either side?
Let's say I have this where X=blank space, C=Cultural Building, and R=Residential:
XXCXX XXRXX XXXXX
I build a second Cultural Building and my R1 becomes a R2:
XXCCX XXRRX XXXXX
I then build a third Cultural Building and my R2 becomes an R3. Are both of these valid expansions? In the first case the starting space of my Residential is moving, so I'm unclear if it is allowed.