diff --git a/Bukkit/src/main/java/com/plotsquared/bukkit/BukkitPlatform.java b/Bukkit/src/main/java/com/plotsquared/bukkit/BukkitPlatform.java
index 61ba28413..cd7dc4c7f 100644
--- a/Bukkit/src/main/java/com/plotsquared/bukkit/BukkitPlatform.java
+++ b/Bukkit/src/main/java/com/plotsquared/bukkit/BukkitPlatform.java
@@ -238,6 +238,16 @@ public final class BukkitPlatform extends JavaPlugin implements Listener, PlotPl
         return this.version;
     }
 
+    @Override
+    public int versionMinHeight() {
+        return serverVersion()[1] >= 18 ? -64 : 0;
+    }
+
+    @Override
+    public int versionMaxHeight() {
+        return serverVersion()[1] >= 18 ? 319 : 255;
+    }
+
     @Override
     public @NonNull String serverImplementation() {
         return Bukkit.getVersion();
diff --git a/Core/src/main/java/com/plotsquared/core/PlotPlatform.java b/Core/src/main/java/com/plotsquared/core/PlotPlatform.java
index 491431b6c..3ef79df52 100644
--- a/Core/src/main/java/com/plotsquared/core/PlotPlatform.java
+++ b/Core/src/main/java/com/plotsquared/core/PlotPlatform.java
@@ -98,6 +98,20 @@ public interface PlotPlatform<P> extends LocaleHolder {
      */
     int[] serverVersion();
 
+    /**
+     * Gets the default minimum world height for the version of Minecraft that the server is running.
+     *
+     * @return minimum world height
+     */
+    int versionMinHeight();
+
+    /**
+     * Gets the default maximum world height for the version of Minecraft that the server is running.
+     *
+     * @return maximum world height
+     */
+    int versionMaxHeight();
+
     /**
      * Gets the server implementation name and version
      *
diff --git a/Core/src/main/java/com/plotsquared/core/plot/PlotArea.java b/Core/src/main/java/com/plotsquared/core/plot/PlotArea.java
index 87a346c44..6c0867f4f 100644
--- a/Core/src/main/java/com/plotsquared/core/plot/PlotArea.java
+++ b/Core/src/main/java/com/plotsquared/core/plot/PlotArea.java
@@ -142,10 +142,10 @@ public abstract class PlotArea {
     private boolean homeAllowNonmember = false;
     private BlockLoc nonmemberHome;
     private BlockLoc defaultHome;
-    private int maxBuildHeight = 255;
-    private int minBuildHeight = 1;
-    private int maxGenHeight = 255;
-    private int minGenHeight = 0;
+    private int maxBuildHeight = PlotSquared.platform().versionMaxHeight();
+    private int minBuildHeight = PlotSquared.platform().versionMinHeight() + 1;
+    private int maxGenHeight = PlotSquared.platform().versionMaxHeight();
+    private int minGenHeight = PlotSquared.platform().versionMinHeight();
     private GameMode gameMode = GameModes.CREATIVE;
     private Map<String, PlotExpression> prices = new HashMap<>();
     private List<String> schematics = new ArrayList<>();