diff --git a/common/script_values/00_building_values.txt b/common/script_values/00_building_values.txt
index 56111c3e..62f3374e 100644
--- a/common/script_values/00_building_values.txt
+++ b/common/script_values/00_building_values.txt
@@ -1817,6 +1817,17 @@ fill_building_slot_chance = {
 		}
 		subtract = 15
 	}
+	if = {
+		limit = {
+			OR = {
+				geographical_region = world_europe_west_britannia
+				geographical_region = world_europe_west_francia
+				geographical_region = world_europe_west_benelux
+				geographical_region = world_nistrenia_wealthy
+			}
+		}
+		add = 2000
+	}
 	if = {
 		limit = {
 			has_special_building = yes
@@ -1874,6 +1885,17 @@ upgrade_building_chance = {
 		}
 		subtract = 15
 	}
+	if = {
+		limit = {
+			OR = {
+				geographical_region = world_europe_west_britannia
+				geographical_region = world_europe_west_francia
+				geographical_region = world_europe_west_benelux
+				geographical_region = world_nistrenia_wealthy
+			}
+		}
+		add = 2000
+	}
 	add = {
 		value = county.development_level
 		multiply = 1.5
diff --git a/map_data/geographical_regions/geographical_region.txt b/map_data/geographical_regions/geographical_region.txt
index 042150a1..f671d96a 100644
--- a/map_data/geographical_regions/geographical_region.txt
+++ b/map_data/geographical_regions/geographical_region.txt
@@ -211,6 +211,11 @@ world_europe_east = {
 	duchies = {
 	}
 }
+world_nistrenia_wealthy = {
+	kingdoms = {
+		k_transylvania k_dacia k_moldavia k_ruthenia k_crimea k_galicia-volhynia
+	}
+}
 world_asia_minor = {
 	duchies = {
 		#Anatolia