Index: binaries/data/mods/public/gui/common/tooltips.js
===================================================================
--- binaries/data/mods/public/gui/common/tooltips.js
+++ binaries/data/mods/public/gui/common/tooltips.js
@@ -644,16 +644,16 @@
 /**
  * Returns the cost information to display in the specified entity's construction button tooltip.
  */
-function getEntityCostTooltip(template, entity, buildingsCountToTrainFullBatch, fullBatchSize, remainderBatch)
+function getEntityCostTooltip(template, player, entity, buildingsCountToTrainFullBatch, fullBatchSize, remainderBatch)
 {
 	// Entities with a wallset component are proxies for initiating wall placement and as such do not have a cost of
 	// their own; the individual wall pieces within it do.
 	if (template.wallSet)
 	{
-		let templateLong = GetTemplateData(template.wallSet.templates.long);
-		let templateMedium = GetTemplateData(template.wallSet.templates.medium);
-		let templateShort = GetTemplateData(template.wallSet.templates.short);
-		let templateTower = GetTemplateData(template.wallSet.templates.tower);
+		let templateLong = GetTemplateData(template.wallSet.templates.long, player);
+		let templateMedium = GetTemplateData(template.wallSet.templates.medium, player);
+		let templateShort = GetTemplateData(template.wallSet.templates.short, player);
+		let templateTower = GetTemplateData(template.wallSet.templates.tower, player);
 
 		let wallCosts = getWallPieceTooltip([templateShort, templateMedium, templateLong]);
 		let towerCosts = getEntityCostComponentsTooltipString(templateTower);
Index: binaries/data/mods/public/gui/session/selection_panels.js
===================================================================
--- binaries/data/mods/public/gui/session/selection_panels.js
+++ binaries/data/mods/public/gui/session/selection_panels.js
@@ -217,7 +217,7 @@
 	},
 	"setupButton": function(data)
 	{
-		let template = GetTemplateData(data.item);
+		let template = GetTemplateData(data.item, data.player);
 		if (!template)
 			return false;
 
@@ -240,12 +240,15 @@
 			getEntityNamesFormatted,
 			getVisibleEntityClassesFormatted,
 			getAurasTooltip,
-			getEntityTooltip,
-			getEntityCostTooltip,
-			getGarrisonTooltip,
-			getPopulationBonusTooltip,
-			showTemplateViewerOnRightClickTooltip
+			getEntityTooltip
 		].map(func => func(template));
+		tooltips.push(
+			getEntityCostTooltip(template, data.player),
+			getGarrisonTooltip(template),
+			getPopulationBonusTooltip(template),
+			showTemplateViewerOnRightClickTooltip(template)
+		);
+
 
 		let limits = getEntityLimitAndCount(data.playerState, data.item);
 		tooltips.push(
@@ -930,7 +933,7 @@
 	},
 	"setupButton": function(data)
 	{
-		let template = GetTemplateData(data.item);
+		let template = GetTemplateData(data.item, data.player);
 		if (!template)
 			return false;
 
@@ -969,9 +972,8 @@
 			getVisibleEntityClassesFormatted(template),
 			getAurasTooltip(template),
 			getEntityTooltip(template),
-			getEntityCostTooltip(template, unitIds[0], buildingsCountToTrainFullBatch, fullBatchSize, remainderBatch)
+			getEntityCostTooltip(template, data.player, unitIds[0], buildingsCountToTrainFullBatch, fullBatchSize, remainderBatch)
 		];
-
 		let limits = getEntityLimitAndCount(data.playerState, data.item);
 		tooltips.push(formatLimitString(limits.entLimit, limits.entCount, limits.entLimitChangers));
 
Index: binaries/data/mods/public/gui/session/session.js
===================================================================
--- binaries/data/mods/public/gui/session/session.js
+++ binaries/data/mods/public/gui/session/session.js
@@ -208,15 +208,14 @@
 	return g_EntityStates[entId];
 }
 
-function GetTemplateData(templateName)
+function GetTemplateData(templateName, owner = undefined)
 {
 	if (!(templateName in g_TemplateData))
 	{
-		let template = Engine.GuiInterfaceCall("GetTemplateData", templateName);
+		let template = Engine.GuiInterfaceCall("GetTemplateData", {"templateName": templateName, "owner": owner});
 		translateObjectKeys(template, ["specific", "generic", "tooltip"]);
 		g_TemplateData[templateName] = deepfreeze(template);
 	}
-
 	return g_TemplateData[templateName];
 }
 
Index: binaries/data/mods/public/simulation/components/GuiInterface.js
===================================================================
--- binaries/data/mods/public/simulation/components/GuiInterface.js
+++ binaries/data/mods/public/simulation/components/GuiInterface.js
@@ -561,8 +561,10 @@
 	return cmpRangeManager.GetElevationAdaptedRange(pos, rot, range, elevationBonus, 2*Math.PI);
 };
 
-GuiInterface.prototype.GetTemplateData = function(player, templateName)
+GuiInterface.prototype.GetTemplateData = function(player, data)
 {
+	let templateName = data.templateName;
+	let pl = !!data.owner ? data.owner : player;
 	let cmpTemplateManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_TemplateManager);
 	let template = cmpTemplateManager.GetTemplate(templateName);
 
@@ -572,14 +574,14 @@
 	let aurasTemplate = {};
 
 	if (!template.Auras)
-		return GetTemplateDataHelper(template, player, aurasTemplate);
+		return GetTemplateDataHelper(template, pl, aurasTemplate);
 
 	let auraNames = template.Auras._string.split(/\s+/);
 
 	for (let name of auraNames)
 		aurasTemplate[name] = AuraTemplates.Get(name);
 
-	return GetTemplateDataHelper(template, player, aurasTemplate);
+	return GetTemplateDataHelper(template, pl, aurasTemplate);
 };
 
 GuiInterface.prototype.IsTechnologyResearched = function(player, data)
@@ -1219,7 +1221,7 @@
 			this.placementWallEntities[tpl] = {
 				"numUsed": 0,
 				"entities": [],
-				"templateData": this.GetTemplateData(player, tpl),
+				"templateData": this.GetTemplateData(player, {"templateName": tpl}),
 			};
 
 			// ensure that the loaded template data contains a wallPiece component