What are the requirements for Purchase Land in CK3?

You: Is an Independent Ruler, Prestige level at least 2, Does not have the Trait: Gallowsbait, Does not have the Trait: Gallivanter and Exiled. The character you target: Is at not War and Does not have a Strong Hook on you. (patch 1.20.1.2)

How do I get the AI to accept Purchase Land?

The AI weighs it. Its reasons: … Opinion of …, Number and Tier of purchased Titles, The target is within De Jure Duchy of my Capital -50, Development and Buildings of the target, The target is not my Culture (…) +10, The target is not my Faith (…), Giving land of my Culture (…) to foreigner, Giving land of my Faith (…) to …, Distance of … from my Capital, … Opinion of …, High Level of Fame, You are married to a … noble +40, You are married to a member of … House +80, You speak the recipient's Language (…) +20, You do not speak the recipient's Language (…) -40, The recipient is in Debt, You have a positive Special Relation with the target +60, You have offered twice as much gold +80, You have a hook on the recipient's +160, You have offered a Hook on yourself +60 and You have offered increased Subject Obligations +80.

How much does Purchase Land cost?

Gold (varies) (patch 1.20.1.2).

Interaction · Landless adventurer actions

Purchase Land

variesGoldRoads to PowerThe AI weighs it

Bargain your Gold for a Title to establish yourself as a Landed Ruler

What you need

You

To send it

Is an Independent Ruler
Prestige level at least 2
Does not have the Trait: Gallowsbait
Does not have the Trait: Gallivanter
… Capital is in range of their Camp.
Exiled

To see it in the menu

Your Government is Adventurer
The target is not you

The character you target

To send it

is_contact_of = scope:actor
Is at not War
Does not have a Strong Hook on you

To see it in the menu

Is landed
Government does not allow: noble families

Which title you can pick

Only Counties and Duchies may be purchased
You cannot purchase a Ruler's Capital County
You cannot purchase a Ruler's Primary Title
To purchase a Duchy, you must be at least illustrious
The seller must completely control the Duchy
If
a check the game hides
Then
- scope:target.holder = scope:recipient

Purchase Land is a landless adventurer character interaction in Crusader Kings III. You need: Is an Independent Ruler, Prestige level at least 2, Does not have the Trait: Gallowsbait and 2 more. The character you target needs: Is at not War and Does not have a Strong Hook on you. The AI weighs it. Reasons the AI weighs include The target is within De Jure Duchy of my Capital (-50), The target is not my Culture (…) (+10), You are married to a … noble (+40) and 8 more. It costs Gold (varies). It needs Roads to Power. Patch 1.20.1.2, from game/common/character_interactions/06_ep3_laamp_interactions.txt.

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Quick answers (3)

What are the requirements for Purchase Land in CK3?: You: Is an Independent Ruler, Prestige level at least 2, Does not have the Trait: Gallowsbait, Does not have the Trait: Gallivanter and Exiled. The character you target: Is at not War and Does not have a Strong Hook on you. (patch 1.20.1.2)
How do I get the AI to accept Purchase Land?: The AI weighs it. Its reasons: … Opinion of …, Number and Tier of purchased Titles, The target is within De Jure Duchy of my Capital -50, Development and Buildings of the target, The target is not my Culture (…) +10, The target is not my Faith (…), Giving land of my Culture (…) to foreigner, Giving land of my Faith (…) to …, Distance of … from my Capital, … Opinion of …, High Level of Fame, You are married to a … noble +40, You are married to a member of … House +80, You speak the recipient's Language (…) +20, You do not speak the recipient's Language (…) -40, The recipient is in Debt, You have a positive Special Relation with the target +60, You have offered twice as much gold +80, You have a hook on the recipient's +160, You have offered a Hook on yourself +60 and You have offered increased Subject Obligations +80.
How much does Purchase Land cost?: Gold (varies) (patch 1.20.1.2).

Will they accept?

The AI adds these up and accepts above zero. Reasons in italics are the script's, with no label in the game.

Reason	Amount
Base	0
… Opinion of …	varies
Number and Tier of purchased Titles	varies
The target is within De Jure Duchy of my Capital when `scope:target.duchy = scope:recipient.capital_county.duchy`	-50
Development and Buildings of the target	varies
The target is not my Culture (…) when If `scope:target.tier = tier_county` Then The target’s culture is not the target’s Otherwise The target › Any de jure county: `holder.top_liege = scope:recipient` `NOT = { scope:recipient.capital_county ?= this }` `NOT = { scope:recipient.primary_title ?= this }` Their culture is the same as that of recipient	+10
The target is not my Faith (…) when If `scope:target.tier = tier_county` Then The target’s faith is not the target’s Otherwise The target › Any de jure county: `holder.top_liege = scope:recipient` `NOT = { scope:recipient.capital_county ?= this }` `NOT = { scope:recipient.primary_title ?= this }` Their faith is the same as that of recipient	varies
Giving land of my Culture (…) to foreigner when Your culture is not the target’s If `scope:target.tier = tier_county` Then The target’s culture is the target’s Otherwise The target › Any de jure county: `holder.top_liege = scope:recipient` `NOT = { scope:recipient.capital_county ?= this }` `NOT = { scope:recipient.primary_title ?= this }` Their culture is the same as that of recipient The target’s culture: `save_temporary_scope_value_as = { … }`	varies
Giving land of my Faith (…) to … when Your faith is not the target’s If `scope:target.tier = tier_county` Then The target’s faith is the target’s Otherwise The target › Any de jure county: `holder.top_liege = scope:recipient` `NOT = { scope:recipient.capital_county ?= this }` `NOT = { scope:recipient.primary_title ?= this }` Their faith is the same as that of recipient The target’s faith: `save_temporary_scope_value_as = { name = hostility value = faith_hostility_level(scope:actor.faith) }`	varies
Distance of … from my Capital when The target’s capital county: `save_temporary_scope_value_as = { name = distance value = squared_distance(scope:distance_target) }`	varies
… Opinion of … when `NOT = { scope:target.holder ?= scope:recipient }`	varies
High Level of Fame when `root.prestige_level >= 4`	your prestige level × 20
You are married to a … noble when Your culture is not the target’s One of these All of these `scope:target.tier = tier_county` The target’s culture is the target’s or The target › Any de jure county: All of these `holder.top_liege = scope:recipient` `NOT = { scope:recipient.capital_county ?= this }` `NOT = { scope:recipient.primary_title ?= this }` Their culture is the same as that of recipient Your spouse: Their culture is the same as that of recipient Their dynasty: Level of Splendor at least 2	+40
A scripted reason when Your faith is not the target’s Your spouse: Their faith is the same as that of recipient Their dynasty: Level of Splendor at least 2	+40
You are married to a member of … House when Your spouse: Is of the same house as the target	+80
You speak the recipient's Language (…) when One of these All of these `scope:target.tier = tier_county` The target’s culture is the target’s or The target › Any de jure county: All of these `holder.top_liege = scope:recipient` `NOT = { scope:recipient.capital_county ?= this }` `NOT = { scope:recipient.primary_title ?= this }` Their culture is the same as that of recipient `knows_language_of_culture = scope:recipient.culture` Your culture is the same as that of recipient	+20
You do not speak the recipient's Language (…) when `NOT = { knows_language_of_culture = scope:recipient.culture }` Your culture is not the same as that of recipient	-40
The recipient is in Debt when The character you target: One of these Debt level more than 0 or Treasury debt level more than 0	varies
You have a positive Special Relation with the target when One of these Has the target as lover or Has the target as friend	+60
You have offered twice as much gold when The option “offer gold” is chosen	+80
You have a hook on the recipient's when You use a Hook	+160
You have offered a Hook on yourself when The option “offer hook” is chosen	+60
You have offered increased Subject Obligations when The option “vassal obligation” is chosen	+80

Acceptance (ai_accept) (286 lines of game script)

base = 0
opinion_modifier = {
	who = scope:recipient
	opinion_target = scope:actor
	multiplier = 1
	desc = AI_OPINION_REASON
}
modifier = {
	add = {
		value = 0
		scope:target = {
			if = {
				limit = {
					tier = tier_county
				}
				add = -30
			}
			else = {
				add = -60
				every_de_jure_county = {
					limit = {
						ep3_purchase_land_valid_county_trigger = yes
					}
					add = -30
				}
			}
		}
	}
	desc = PURCHASE_LAND_NUM_TITLES_REASON
}
modifier = {
	add = -50
	desc = PURCHASE_LAND_DE_JURE_DUCHY_REASON
	scope:target.duchy = scope:recipient.capital_county.duchy
}
modifier = {
	add = {
		value = 0
		if = {
			limit = {
				scope:target.tier = tier_county
			}
			add = scope:target.development_level
			scope:target = {
				every_county_province = {
					add = num_buildings
				}
			}
		}
		else = {
			scope:target = {
				every_de_jure_county = {
					limit = {
						ep3_purchase_land_valid_county_trigger = yes
					}
					add = development_level
					every_county_province = {
						add = num_buildings
					}
				}
			}
		}
		multiply = -2
	}
	desc = PURCHASE_LAND_VALUE_REASON
}
modifier = {
	add = 10
	add = {
		value = 0
		if = {
			limit = {
				scope:target.tier = tier_county
			}
			add = 10
		}
		else = {
			scope:target = {
				every_de_jure_county = {
					limit = {
						ep3_purchase_land_valid_county_trigger = yes
						culture != scope:recipient.culture
					}
					add = 10
				}
			}
		}
		max = 30
	}
	desc = PURCHASE_LAND_FOREIGN_CULTURE_REASON
	trigger_if = {
		limit = {
			scope:target.tier = tier_county
		}
		scope:target.culture != scope:recipient.culture
	}
	trigger_else = {
		scope:target = {
			any_de_jure_county = {
				ep3_purchase_land_valid_county_trigger = yes
				culture != scope:recipient.culture
			}
		}
	}
}
modifier = {
	add = {
		value = 0
		if = {
			limit = {
				scope:target.tier = tier_county
			}
			add = 10
		}
		else = {
			scope:target = {
				every_de_jure_county = {
					limit = {
						ep3_purchase_land_valid_county_trigger = yes
						faith != scope:recipient.faith
					}
					add = 10
				}
			}
		}
		max = 30
	}
	desc = PURCHASE_LAND_DIFFERENT_FAITH_REASON
	trigger_if = {
		limit = {
			scope:target.tier = tier_county
		}
		scope:target.faith != scope:recipient.faith
	}
	trigger_else = {
		scope:target = {
			any_de_jure_county = {
				ep3_purchase_land_valid_county_trigger = yes
				faith != scope:recipient.faith
			}
		}
	}
}
modifier = {
	add = {
		value = 0
		if = {
			limit = {
				scope:target.tier = tier_county
			}
			add = -40
		}
		else = {
			scope:target = {
				every_de_jure_county = {
					limit = {
						ep3_purchase_land_valid_county_trigger = yes
						culture != scope:recipient.culture
					}
					add = -40
				}
			}
		}
		if = {
			limit = {
				scope:acceptance != 0
			}
			divide = scope:acceptance
		}
		multiply = 2
		min = -200
	}
	desc = PURCHASE_LAND_MY_CULTURE_REASON
	scope:actor.culture != scope:recipient.culture
	trigger_if = {
		limit = {
			scope:target.tier = tier_county
		}
		scope:target.culture = scope:recipient.culture
	}
	trigger_else = {
		scope:target = {
			any_de_jure_county = {
				ep3_purchase_land_valid_county_trigger = yes
				culture = scope:recipient.culture
			}
		}
	}
	scope:recipient.culture = {
		save_temporary_scope_value_as = {
			name = acceptance
			value = {
				value = cultural_acceptance(scope:actor.culture)
				divide = 25
				ceiling = yes
			}
		}
	}
}
modifier = {
	add = {
		value = 0
		if = {
			limit = {
				scope:target.tier = tier_county
			}
			add = -40
		}
		else = {
			scope:target = {
				every_de_jure_county = {
					limit = {
						ep3_purchase_land_valid_county_trigger = yes
						faith != scope:recipient.faith
					}
					add = -40
				}
			}
		}
		if = {
			limit = {
				scope:hostility != 0
			}
			multiply = scope:hostility
		}
		multiply = 2
		min = -200
	}
	desc = PURCHASE_LAND_MY_FAITH_REASON
	scope:actor.faith != scope:recipient.faith
	trigger_if = {
		limit = {
			scope:target.tier = tier_county
		}
		scope:target.faith = scope:recipient.faith
	}
	trigger_else = {
		scope:target = {
			any_de_jure_county = {
				ep3_purchase_land_valid_county_trigger = yes
				faith = scope:recipient.faith
			}
		}
	}
	scope:recipient.faith = {
		save_temporary_scope_value_as = {
			name = hostility
			value = faith_hostility_level(scope:actor.faith)
		}
	}
}
modifier = {
	add = {
		value = 0
		add = scope:distance
		divide = scope:recipient.highest_held_title_tier
		if = {
			limit = {
				scope:distance <= squared_distance_medium
			}
			multiply = -0.01
		}
		else = {
			multiply = 0.0005
		}
		min = -25
		max = 50
	}
	desc = PURCHASE_LAND_DISTANCE_REASON
	trigger_if = {
		limit = {
			scope:target.tier = tier_county
		}
		scope:target = {
			save_temporary_scope_as = distance_target
		}
	}
	trigger_else = {
		scope:target.title_capital_county = {
			save_temporary_scope_as = distance_target
		}
	}
	scope:recipient.capital_county = {
		save_temporary_scope_value_as = {
			name = dista
# … (cut here; the rest is in the file)

As written in game/common/character_interactions/06_ep3_laamp_interactions.txt.

What happens

If they accept

You:
- You: Pay gold to the target
- You:
  - If
    character:90028 ?= this
    Then
    This will end your opposition to Normans and participation in the Harrying of the North!
- You › Otherwise › The new primary title:
  - change_title_holder_include_vassals = { holder = scope:actor change = scope:title_change take_baronies = no }
- If
  NOT = { scope:ascended_throne_value = flag:purchased }
  Then
  The new primary title › Every de jure county:
  Where:
  If
  a check the game hides
  Then
  holder.top_liege ?= scope:defender.top_liege
  If
  a check the game hides
  Then
  holder.top_liege ?= scope:new_liege.top_liege
  change_title_holder_include_vassals = { holder = scope:actor change = scope:title_change take_baronies = no }
- Every in list:
  - Where:
    is_leased_out = no
  - change_title_holder_include_vassals = { holder = scope:actor change = scope:title_change take_baronies = no }

If they refuse

Event ep3_laamps.0102

Options when sending

Pay DoubleOffer the recipient twice as much for the target
Use a Hook
Offer a Hook on yourselfThe recipient will have a hook on you to use as they pleases.
Offer increased Subject ObligationsYour Vassal Contract will gain Extortionate Taxes and Massive Levy Contribution

Events it fires: ep3_laamps.0102

• the game's own tooltip text · ◦ our reading of the script line · code the script where neither exists

Who can use it and sees it (is_available, is_shown) (9 lines of game script)

is_available = government_has_flag = government_is_landless_adventurer
is_shown = has_ep3_dlc_trigger = yes
scope:recipient = {
	is_landed = yes
	NOT = {
		government_allows = noble_families
	}
}
scope:recipient != scope:actor

As written in game/common/character_interactions/06_ep3_laamp_interactions.txt.

Can be sent when (is_valid…) (97 lines of game script)

scope:actor = {
	top_liege = this
	prestige_level >= 2
	NOR = {
		has_trait = gallowsbait
		has_trait = gallivanter
	}
}
scope:recipient = {
	is_contact_of = scope:actor
	is_at_war = no
	NOT = {
		has_strong_hook = scope:actor
	}
}
trigger_if = {
	limit = {
		scope:target ?= {
			tier = tier_barony
		}
	}
	custom_description = {
		text = purchase_land_barony_tt
		always = no
	}
}
trigger_if = {
	limit = {
		scope:target ?= {
			tier >= tier_kingdom
		}
	}
	custom_description = {
		text = purchase_land_kingdom_tt
		always = no
	}
}
trigger_if = {
	limit = {
		scope:target ?= {
			is_head_of_faith = yes
		}
	}
	custom_description = {
		text = purchase_land_religious_tt
		always = no
	}
}
trigger_if = {
	limit = {
		scope:target ?= {
			is_noble_family_title = yes
		}
	}
	custom_description = {
		text = purchase_land_noble_family_tt
		always = no
	}
}
trigger_if = {
	limit = {
		scope:target ?= {
			has_variable = adventurer_creation_reason
		}
	}
	custom_description = {
		text = purchase_land_landless_adventurer_tt
		always = no
	}
}
trigger_if = {
	limit = {
		scope:recipient = {
			any_held_county = {
				count < 2
			}
		}
	}
	custom_description = {
		text = purchase_land_minimum_county_tt
		object = scope:recipient
		always = no
	}
}
ep3_laamp_diplo_range_trigger = {
	TARGET = scope:recipient
	LAAMP = scope:actor
}
custom_tooltip = {
	text = the_wake_1
	NOT = {
		is_laamp_exiled_from_province_trigger = {
			PROVINCE = scope:recipient.capital_province
			LAAMP = scope:actor
		}
	}
}

As written in game/common/character_interactions/06_ep3_laamp_interactions.txt.

Effects (on_send, on_accept, on_decline) (141 lines of game script)

on_accept = scope:actor = {
	save_scope_as = adventurer
}
scope:target = {
	save_scope_as = purchase_land_target
	add_to_list = purchased_titles
	if = {
		limit = {
			tier = tier_duchy
		}
		every_de_jure_county = {
			limit = {
				holder ?= {
					OR = {
						this = scope:recipient
						target_is_liege_or_above = scope:recipient
					}
				}
			}
			if = {
				limit = {
					holder = scope:recipient
				}
				add_to_list = purchased_titles
			}
			else_if = {
				limit = {
					holder ?= {
						highest_held_title_tier < scope:purchase_land_target.tier
						NOT = {
							government_has_flag = government_is_administrative
						}
						target_is_liege_or_above = scope:recipient
					}
				}
				holder = {
					if = {
						limit = {
							NOT = {
								is_in_list = purchase_land_vassals_taken
							}
						}
						add_to_list = purchase_land_vassals_taken
					}
				}
			}
			else = {
				add_to_list = purchased_titles
			}
		}
	}
}
ordered_in_list = {
	list = purchased_titles
	order_by = tier
	save_scope_as = new_primary_title
}
save_scope_value_as = {
	name = purchase_land_cost
	value = {
		if = {
			limit = {
				scope:target.tier = tier_county
			}
			add = purchase_land_county_cost_value
		}
		else = {
			add = purchase_land_duchy_cost_value
			scope:target = {
				every_de_jure_county = {
					limit = {
						ep3_purchase_land_valid_county_trigger = yes
					}
					add = purchase_land_county_cost_value
				}
			}
		}
		if = {
			limit = {
				scope:actor = {
					has_variable = ep3_grace_to_the_family_var
				}
			}
			multiply = 0.5
		}
		if = {
			limit = {
				scope:offer_gold = yes
			}
			multiply = 2
		}
	}
}
save_scope_value_as = {
	name = purchase_land_legitimacy_cost
	value = {
		value = 0
		if = {
			limit = {
				scope:target.holder != scope:recipient
			}
			every_in_list = {
				list = purchased_titles
				if = {
					limit = {
						tier = tier_county
					}
					add = minor_legitimacy_loss
				}
				else = {
					add = medium_legitimacy_loss
				}
			}
		}
	}
}
show_as_tooltip = {
	scope:actor = {
		purchase_land_interaction_effect = yes
	}
}
if = {
	limit = {
		always = scope:hook
	}
	scope:actor = {
		use_hook = scope:recipient
	}
}
hidden_effect = {
	scope:actor = {
		add_gold = scope:purchase_land_cost
	}
}
scope:actor = {
	trigger_event = ep3_laamps.0100
}
on_decline = scope:actor = {
	save_scope_as = adventurer
	trigger_event = ep3_laamps.0102
}

As written in game/common/character_interactions/06_ep3_laamp_interactions.txt.

Category: Landless adventurer actions
Cost: Gold: varies
Again on the same character: after 10 years
DLC: Roads to Power
In the menu: under More…
ID: purchase_land_interaction

Source: game/common/character_interactions/06_ep3_laamp_interactions.txt and the English localisation, Crusader Kings III 1.20.1.2. “You” is the character who sends it (scope:actor, or a puppet acting for you); “the character you target” is the recipient.