diff --git a/src/main/java/com/volmit/iris/engine/jigsaw/PlannedStructure.java b/src/main/java/com/volmit/iris/engine/jigsaw/PlannedStructure.java
index e1ffc33df..92ac8c54b 100644
--- a/src/main/java/com/volmit/iris/engine/jigsaw/PlannedStructure.java
+++ b/src/main/java/com/volmit/iris/engine/jigsaw/PlannedStructure.java
@@ -114,7 +114,9 @@ public class PlannedStructure {
         int xx = i.getPosition().getX() + sx;
         int zz = i.getPosition().getZ() + sz;
         int offset = i.getPosition().getY() - startHeight;
-        int height = placer.getHighest(xx, zz, getData()) + offset + (v.getH() / 2);
+        int height = i.getStructure().getStructure().getLockY() != -1
+                ? i.getStructure().getStructure().getLockY()
+                : placer.getHighest(xx, zz, getData()) + offset + (v.getH() / 2);
 
         if (options.getMode().equals(ObjectPlaceMode.PAINT) || options.isVacuum()) {
             height = -1;
@@ -124,7 +126,6 @@ public class PlannedStructure {
         int h = vo.place(xx, height, zz, placer, options, rng, (b)
                 -> e.set(b.getX(), b.getY(), b.getZ(), v.getLoadKey() + "@" + id), null, getData());
 
-
         for (IrisJigsawPieceConnector j : i.getAvailableConnectors()) {
             if (j.getSpawnEntity() != null)// && h != -1)
             {
diff --git a/src/main/java/com/volmit/iris/engine/object/jigsaw/IrisJigsawStructure.java b/src/main/java/com/volmit/iris/engine/object/jigsaw/IrisJigsawStructure.java
index 143427054..af36ce9fa 100644
--- a/src/main/java/com/volmit/iris/engine/object/jigsaw/IrisJigsawStructure.java
+++ b/src/main/java/com/volmit/iris/engine/object/jigsaw/IrisJigsawStructure.java
@@ -59,6 +59,9 @@ public class IrisJigsawStructure extends IrisRegistrant {
     @Desc("If set to true, iris will look for any pieces with only one connector in valid pools for edge connectors and attach them to 'terminate' the paths/piece connectors. Essentially it caps off ends. For example in a village, Iris would add houses to the ends of roads where possible. For terminators to be selected, they can only have one connector or they wont be chosen.")
     private boolean terminate = true;
 
+    @Desc("Set to lock the starting peice to a y coordinate, otherwise the surface will be used.")
+    private int lockY = -1;
+
     private transient AtomicCache<Integer> maxDimension = new AtomicCache<>();
 
     private void loadPool(String p, KList<String> pools, KList<String> pieces) {