
Effect · every source
How to increase Diplomatic Range in CK3
10 sources raise Diplomatic Range and 3 lower it in the game files of patch 1.20.0.3.
diplomatic_range_multThe biggest boosts
- +30%WanderlustDynasty legacy · Adventure legacy · Members of the dynasty
+30%Capital Temple ComplexBuilding · Holder
+25%PūjāTenet · Characters holding it as a personal tenet
What raises Diplomatic Range (10)
Traits (1)

Voyager+15%
lifestyle_voyager· game/common/traits/00_traits.txt
Lifestyle perks (1)
Journey Planner+15%
journey_planner_perk· game/common/lifestyle_perks/00_wanderer_3_voyager_tree_perks.txt
Cultural traditions (3)

Caravaneers+20%
Characters of this culture
tradition_caravaneers· game/common/culture/traditions/00_regional_traditions.txt
Diasporic+20%
Characters of this culture
tradition_diasporic· game/common/culture/traditions/00_societal_traditions.txt
Characters of this culture
tradition_ep3_cultivated_sophistication· game/common/culture/traditions/07_ep3_traditions.txt
Tenets (1)

Pūjā+25%
Characters holding it as a personal tenet
tenet_ritual_hospitality· game/common/religion/tenet_types/00_tenet_types.txt
Buildings (3)

Holder
Levels 3–5: +15% to +30% (4 levels give it)
mandala-capital· game/common/buildings/tgp_great_project_buildings.txt

Dynasty legacies (1)
Wanderlust+30%
Adventure legacy · Members of the dynasty
fp1_adventure_legacy_1· game/common/dynasty_perks/01_fp1_dynasty_perks.txt
What lowers Diplomatic Range (3)
Cultural traditions (2)

Isolationist-25%
Characters of this culture
tradition_isolationist· game/common/culture/traditions/00_realm_traditions.txt
Characters of this culture
tradition_tgp_inward_perfection· game/common/culture/traditions/tgp_traditions.txt
Laws (1)
Enforced Isolation-15%
Imperial Policies · Rulers with this law
isolation_law· game/common/laws/03_imperial_policies.txt
Source: game/common/buildings/00_special_buildings.txt, game/common/buildings/tgp_great_project_buildings.txt, game/common/culture/traditions/00_realm_traditions.txt, game/common/culture/traditions/00_regional_traditions.txt, game/common/culture/traditions/00_societal_traditions.txt, game/common/culture/traditions/07_ep3_traditions.txt, game/common/culture/traditions/tgp_traditions.txt, game/common/dynasty_perks/01_fp1_dynasty_perks.txt, game/common/laws/03_imperial_policies.txt, game/common/lifestyle_perks/00_wanderer_3_voyager_tree_perks.txt, game/common/religion/tenet_types/00_tenet_types.txt, game/common/traits/00_traits.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.