Ceding

Ceding is the act of giving a stronghold or land to another player. It is a legal free action so long as the requirements are met and it is not an act of quit ceding.

Land Ceding
Most commonly, ceding involves the repair and adjustment of borders. Houses may declare to OP that they wish a specific portion of land to be given to a House that has a direct territory connection. This may be done as the establishment of borders after a war, or as a concession of land in exchange for peace or a stronghold.

Legal Stronghold Ceding
So long as you have a direct path that connects the proposed stronghold to the recipients land, you may surrender the stronghold to that faction. You may not cede land to a non-player house, such as NW in maps that NW are not playable or Wight Walker/Plague Houses. You intend to continue to play, as quit-ceding is illegal

Quit Ceding
Quit Ceding, or the act of giving away your land or stronghold(s) to your allies or other houses while simultaneously leaving the game, is considered illegal. If you must leave the game, simply declare you house open and hopefully a lurker will claim your house. In any case, you must make sure to leave yourself enough time to play, as games can take many hours, or understand the consequences of not seeing a game till its end. In some cases, OPs may allow the ceding of King's Landing to maintain the status quo and not cause a leaving player to dismantle a game. This is not always the case, and a Crown may become vacant as the result of a leaving player.