diff --git a/package-lock.json b/package-lock.json
index 67f5156..be4b065 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "cimengine-build-tools",
-  "version": "1.2.2",
+  "version": "1.3.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "cimengine-build-tools",
-      "version": "1.2.2",
+      "version": "1.3.0",
       "license": "MIT",
       "dependencies": {
         "@turf/turf": "^6.5.0",
diff --git a/package.json b/package.json
index 227fead..c14037e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cimengine-build-tools",
-  "version": "1.2.2",
+  "version": "1.3.0",
   "description": "Geojson data processing tools for CIMEngine",
   "main": "index.js",
   "scripts": {
diff --git a/tools/GeoBuilder.js b/tools/GeoBuilder.js
index 592616c..5b3da0b 100644
--- a/tools/GeoBuilder.js
+++ b/tools/GeoBuilder.js
@@ -379,16 +379,19 @@ if (config?.reProperty) {
   console.log();
 }
 
-console.log("Set new ids");
-console.time("Set new ids");
+console.log("Set new ids and area");
+console.time("Set new ids and area");
 
 let id = 0;
 geo.features = geo.features.map((val) => {
   val.id = id++;
+  val.properties.area = (turf.area(val) / 1000000)
+    .toFixed(2)
+    .replace(/(\d)(?=(\d\d\d)+([^\d]|$))/g, "$1 ");
   return val;
 });
 
-console.timeEnd("Set new ids");
+console.timeEnd("Set new ids and area");
 
 fs.writeFileSync(geofixConf.output, JSON.stringify(geo, null, "  "));
 console.timeEnd("Total");