diff --git a/comparators/large_building.js b/comparators/large_building.js
index 1fc6464..81b8855 100644
--- a/comparators/large_building.js
+++ b/comparators/large_building.js
@@ -13,7 +13,7 @@ function largeBuilding(newVersion, oldVersion) {
   }
   var area = turfArea(newVersion);
 
-  if (area > 2500000 && newVersion.properties.hasOwnProperty('building')) {
+  if (area > 500000 && newVersion.properties.hasOwnProperty('building')) {
     return {'result:large_building': area};
   }
   return false;