diff --git a/binaries/data/mods/public/simulation/data/technologies/civbonuses/ptol_structures.json b/binaries/data/mods/public/simulation/data/technologies/civbonuses/ptol_structures.json
new file mode 100644
index 0000000000..43191918ad
--- /dev/null
+++ b/binaries/data/mods/public/simulation/data/technologies/civbonuses/ptol_structures.json
@@ -0,0 +1,18 @@
+{
+	"genericName": "Sun-dried Mud Bricks",
+	"autoResearch": true,
+	"description": "Sun-dried mud bricks were a common building material in hot and dry areas, especially where wood was scarce. Although not as strong and durable as fired bricks or natural stone and vulnerable to constant rains and heavy floods, mud bricks have the advantage they are cheap and easy to produce.",
+	"requirements": {
+		"any": [
+			{ "civ": "ptol" }
+		]
+	},
+	"icon": "stone_blocks_brown.png",
+	"tooltip": "Houses and Economic Structures −50% wood cost, but +50% build time.",
+	"modifications": [
+		{ "value": "Cost/BuildTime", "multiply": 1.5},
+		{ "value": "Cost/Resources/wood", "multiply": 0.5 },
+		{ "value": "Loot/wood", "multiply": 0.5 }
+	],
+	"affects": ["Economic !CivCentre !Naval", "House"]
+}
diff --git a/binaries/data/mods/public/simulation/templates/structures/ptol/corral.xml b/binaries/data/mods/public/simulation/templates/structures/ptol/corral.xml
index d87459022d..b19cd1a74f 100644
--- a/binaries/data/mods/public/simulation/templates/structures/ptol/corral.xml
+++ b/binaries/data/mods/public/simulation/templates/structures/ptol/corral.xml
@@ -1,24 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Entity parent="template_structure_resource_corral">
-  <Cost>
-    <BuildTime>60</BuildTime>
-    <Resources>
-      <wood>0</wood>
-    </Resources>
-  </Cost>
   <Footprint>
     <Square width="14.0" depth="22.0"/>
   </Footprint>
-  <Health>
-    <Max>400</Max>
-  </Health>
   <Identity>
     <Civ>ptol</Civ>
     <SpecificName>Epaulos</SpecificName>
   </Identity>
-  <Loot>
-    <wood>0</wood>
-  </Loot>
   <Obstruction>
     <Static width="12.0" depth="20.0"/>
   </Obstruction>
diff --git a/binaries/data/mods/public/simulation/templates/structures/ptol/farmstead.xml b/binaries/data/mods/public/simulation/templates/structures/ptol/farmstead.xml
index 2b3b02ba57..c5d216d451 100644
--- a/binaries/data/mods/public/simulation/templates/structures/ptol/farmstead.xml
+++ b/binaries/data/mods/public/simulation/templates/structures/ptol/farmstead.xml
@@ -1,24 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Entity parent="template_structure_economic_farmstead">
-  <Cost>
-    <BuildTime>80</BuildTime>
-    <Resources>
-      <wood>0</wood>
-    </Resources>
-  </Cost>
   <Footprint>
     <Square width="20.0" depth="18.0"/>
   </Footprint>
-  <Health>
-    <Max>400</Max>
-  </Health>
   <Identity>
     <Civ>ptol</Civ>
     <SpecificName>Epoikion</SpecificName>
   </Identity>
-  <Loot>
-    <wood>0</wood>
-  </Loot>
   <Obstruction>
     <Static width="18.0" depth="16.0"/>
   </Obstruction>
diff --git a/binaries/data/mods/public/simulation/templates/structures/ptol/house.xml b/binaries/data/mods/public/simulation/templates/structures/ptol/house.xml
index 76d3f3f247..f61d88cee9 100644
--- a/binaries/data/mods/public/simulation/templates/structures/ptol/house.xml
+++ b/binaries/data/mods/public/simulation/templates/structures/ptol/house.xml
@@ -1,26 +1,15 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Entity parent="template_structure_civic_house">
-  <Cost>
-    <BuildTime>80</BuildTime>
-    <Resources>
-      <wood>0</wood>
-    </Resources>
-  </Cost>
   <Footprint>
     <Square width="15.0" depth="14.0"/>
   </Footprint>
   <Health>
-    <Max>500</Max>
     <SpawnEntityOnDeath>decay|rubble/rubble_stone_3x3</SpawnEntityOnDeath>
   </Health>
   <Identity>
     <Civ>ptol</Civ>
     <SpecificName>Oikos</SpecificName>
-    <Tooltip>Increase the population limit. Since they are made of mud brick, Egyptian houses are free of cost, but are very weak.</Tooltip>
   </Identity>
-  <Loot>
-    <wood>0</wood>
-  </Loot>
   <Obstruction>
     <Static width="13.0" depth="12.0"/>
   </Obstruction>
diff --git a/binaries/data/mods/public/simulation/templates/structures/ptol/storehouse.xml b/binaries/data/mods/public/simulation/templates/structures/ptol/storehouse.xml
index a075ffe3e1..193a0f962c 100644
--- a/binaries/data/mods/public/simulation/templates/structures/ptol/storehouse.xml
+++ b/binaries/data/mods/public/simulation/templates/structures/ptol/storehouse.xml
@@ -1,25 +1,15 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Entity parent="template_structure_economic_storehouse">
-  <Cost>
-    <BuildTime>80</BuildTime>
-    <Resources>
-      <wood>0</wood>
-    </Resources>
-  </Cost>
   <Footprint>
     <Square width="19.0" depth="18.0"/>
   </Footprint>
   <Health>
-    <Max>400</Max>
     <SpawnEntityOnDeath>decay|rubble/rubble_stone_4x4</SpawnEntityOnDeath>
   </Health>
   <Identity>
     <Civ>ptol</Civ>
     <SpecificName>Apothēkē</SpecificName>
   </Identity>
-  <Loot>
-    <wood>0</wood>
-  </Loot>
   <Obstruction>
     <Static width="17.0" depth="16.0"/>
   </Obstruction>
diff --git a/binaries/data/mods/public/simulation/templates/template_structure_resource_corral.xml b/binaries/data/mods/public/simulation/templates/template_structure_resource_corral.xml
index ce53816d08..56600f231e 100644
--- a/binaries/data/mods/public/simulation/templates/template_structure_resource_corral.xml
+++ b/binaries/data/mods/public/simulation/templates/template_structure_resource_corral.xml
@@ -18,7 +18,7 @@
     <GenericName>Corral</GenericName>
     <SelectionGroupName>template_structure_resource_corral</SelectionGroupName>
     <Tooltip>Raise Domestic Animals for food.</Tooltip>
-    <VisibleClasses datatype="tokens">Village Corral</VisibleClasses>
+    <VisibleClasses datatype="tokens">Economic Village Corral</VisibleClasses>
     <Icon>structures/corral.png</Icon>
     <RequiredTechnology>phase_village</RequiredTechnology>
   </Identity>