Effect · every source

How to increase Same heritage county advantage in CK3

5 sources raise Same heritage county advantage and 0 lower it in the game files of patch 1.20.0.3.

same_heritage_county_advantage_add

The biggest boosts

+5Chivalric DominanceLifestyle perk · Administrative government
+5Defense MobilizationLaw · Imperial Policies · Rulers with this law
+4Fortress MasteryCultural tradition · Characters of this culture

What raises Same heritage county advantage (5)

Lifestyle perks (1)

Chivalric Dominance+5
Administrative government
chivalric_dominance_perk · game/common/lifestyle_perks/00_martial_3_chivalry_tree_perks.txt

Cultural traditions (1)

Fortress Mastery+4
Characters of this culture
tradition_fortress_mastery · game/common/culture/traditions/tgp_traditions.txt

Holy sites (1)

Mount Lu+2
Jiangzhou · Followers, while the faith holds it
mount_lu · game/common/religion/faith_types/00_faith_types.txt

Buildings (1)

Giant Wild Goose Pagoda+2
Holder
giant-wild-goose-pagoda · game/common/buildings/00_special_buildings.txt

Laws (1)

Defense Mobilization+5
Imperial Policies · Rulers with this law
defense_mobilization_law · game/common/laws/03_imperial_policies.txt

Source: game/common/buildings/00_special_buildings.txt, game/common/culture/traditions/tgp_traditions.txt, game/common/laws/03_imperial_policies.txt, game/common/lifestyle_perks/00_martial_3_chivalry_tree_perks.txt, game/common/religion/faith_types/00_faith_types.txt and the English localisation, Crusader Kings III 1.20.0.3. Building chains are shown once, at their strongest level, with the range over their levels. Effects that come only from events or scale with a script value are not listed.