
Effect · every source
How to reduce City Buildings Construction Time in CK3
0 sources raise City Buildings Construction Time and 3 lower it in the game files of patch 1.20.0.3 — for this one, lower is better.
city_holding_build_speedThe biggest reductions
-25%City KeepersCultural tradition · Characters of this culture
-10%WierdijksInnovation · Characters of this culture- -10%Dedicated ContributorsDynasty legacy · Metropolitan legacy · Members of the dynasty
What lowers City Buildings Construction Time (3)
Cultural traditions (1)

City Keepers-25%
Characters of this culture
tradition_city_keepers· game/common/culture/traditions/00_realm_traditions.txt
Innovations (1)

Wierdijks-10%
Characters of this culture
innovation_wierdijks· game/common/culture/innovations/00_late_medieval_innovations.txt
Dynasty legacies (1)
Dedicated Contributors-10%
Metropolitan legacy · Members of the dynasty
fp2_urbanism_legacy_3· game/common/dynasty_perks/03_fp2_dynasty_perks.txt
Source: game/common/culture/innovations/00_late_medieval_innovations.txt, game/common/culture/traditions/00_realm_traditions.txt, game/common/dynasty_perks/03_fp2_dynasty_perks.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.