Catan Settlement Distance Rule: Where You Can and Cannot Build
The Catan distance rule says that a new settlement cannot be built on an intersection directly adjacent to another settlement or city, regardless of who owns it.
The basic distance rule
Before placing a settlement, check the three neighboring intersections connected by board edges. If any of them contains a settlement or city, the new settlement cannot be placed there.
Does an opponent’s building count?
Yes. The distance rule applies to every settlement and city on the board, not just your own pieces.
Do roads matter?
After setup, a new settlement must also connect to one or more of your own roads. Meeting the distance rule alone is not enough.
What about starting settlements?
During initial setup you still obey the distance rule, but the normal requirement to connect the settlement to an existing road does not apply because you place the settlement first and then place its starting road.
Can you build through another player’s settlement?
An opponent’s settlement or city blocks your road network at that intersection. Your roads may remain on both sides, but they are not continuously connected through the opponent’s building for network purposes such as Longest Road.
Does upgrading a settlement to a city use the distance rule again?
No new location is being created. You replace one of your own existing settlements with a city by paying the city cost, so the distance rule was already satisfied when the settlement was built.
Does the rule apply across water in Seafarers?
Yes. CATAN’s Seafarers FAQ confirms that the settlement distance rule still applies between neighboring island intersections separated by a narrow waterway when those intersections are adjacent under the board geometry.
Related Catan guides
Official sources
Rules checked September 2026.