diff --git a/Scenes/Tiles/GroundTile.tscn b/Scenes/Tiles/GroundTile.tscn
index ce20bf9..62eac69 100644
--- a/Scenes/Tiles/GroundTile.tscn
+++ b/Scenes/Tiles/GroundTile.tscn
@@ -9,6 +9,7 @@ size = Vector2(54, 54)
 [node name="GroundTile" type="StaticBody2D"]
 collision_layer = 0
 script = ExtResource("1_mqsaf")
+TileId = "ground"
 
 [node name="Sprite2D" type="Sprite2D" parent="."]
 scale = Vector2(0.1, 0.1)
diff --git a/Scenes/Tiles/MinerTile.tscn b/Scenes/Tiles/MinerTile.tscn
index c40d1b1..95a18cb 100644
--- a/Scenes/Tiles/MinerTile.tscn
+++ b/Scenes/Tiles/MinerTile.tscn
@@ -8,6 +8,7 @@ size = Vector2(54, 54)
 
 [node name="MinerTile" type="StaticBody2D"]
 script = ExtResource("1_mecoy")
+TileId = "miner"
 
 [node name="Sprite2D" type="Sprite2D" parent="."]
 scale = Vector2(0.1, 0.1)
diff --git a/Scenes/Tiles/StoneIronTile.tscn b/Scenes/Tiles/StoneIronTile.tscn
index 817308b..7d8edc9 100644
--- a/Scenes/Tiles/StoneIronTile.tscn
+++ b/Scenes/Tiles/StoneIronTile.tscn
@@ -9,6 +9,7 @@ size = Vector2(54, 54)
 [node name="StoneIronTile" type="StaticBody2D"]
 collision_layer = 0
 script = ExtResource("1_ewklp")
+TileId = "stone_iron"
 
 [node name="Sprite2D" type="Sprite2D" parent="."]
 scale = Vector2(0.1, 0.1)
diff --git a/Scenes/Tiles/StoneTile.tscn b/Scenes/Tiles/StoneTile.tscn
index ec84287..0286dfd 100644
--- a/Scenes/Tiles/StoneTile.tscn
+++ b/Scenes/Tiles/StoneTile.tscn
@@ -9,6 +9,7 @@ size = Vector2(54, 54)
 [node name="StoneTile" type="StaticBody2D"]
 collision_layer = 0
 script = ExtResource("1_rndy8")
+TileId = "stone"
 
 [node name="Sprite2D" type="Sprite2D" parent="."]
 scale = Vector2(0.1, 0.1)
diff --git a/Scenes/Tiles/WallTile.tscn b/Scenes/Tiles/WallTile.tscn
index d9a4ae7..13c864a 100644
--- a/Scenes/Tiles/WallTile.tscn
+++ b/Scenes/Tiles/WallTile.tscn
@@ -8,6 +8,7 @@ size = Vector2(54, 54)
 
 [node name="WallTile" type="StaticBody2D"]
 script = ExtResource("1_ph7y3")
+TileId = "wall"
 
 [node name="Sprite2D" type="Sprite2D" parent="."]
 scale = Vector2(0.05, 0.05)
diff --git a/Scripts/Tiles/BaseTile.cs b/Scripts/Tiles/BaseTile.cs
index 6a54ca3..50fc438 100644
--- a/Scripts/Tiles/BaseTile.cs
+++ b/Scripts/Tiles/BaseTile.cs
@@ -1,4 +1,4 @@
-using System.Numerics;
+using System.Threading.Tasks;
 using AceFieldNewHorizon.Scripts.System;
 using Godot;
 using Vector2 = Godot.Vector2;
@@ -7,9 +7,14 @@ namespace AceFieldNewHorizon.Scripts.Tiles;
 
 public partial class BaseTile : Node2D
 {
+    [Export] public string TileId { get; set; }
+    
+    public BuildingData TileData { get; set; }
+
     private CollisionShape2D _collisionShape;
     private Sprite2D _sprite;
     private ColorRect _progressOverlay;
+    private AudioStreamPlayer _completionSound;
 
     public override void _Ready()
     {
@@ -18,6 +23,15 @@ public partial class BaseTile : Node2D
         _progressOverlay = GetNodeOrNull<ColorRect>("ProgressOverlay");
         if (_progressOverlay != null)
             _progressOverlay.Visible = false;
+
+        // Setup audio player
+        _completionSound = new AudioStreamPlayer();
+        AddChild(_completionSound);
+        var sound = GD.Load<AudioStream>("res://Sounds/Events/ConstructionComplete.wav");
+        if (sound != null)
+        {
+            _completionSound.Stream = sound;
+        }
     }
 
     public void SetGhostMode(bool canPlace)
@@ -47,6 +61,7 @@ public partial class BaseTile : Node2D
         var texSize = new Vector2(GridUtils.TileSize, GridUtils.TileSize);
 
         _progressOverlay.Visible = true;
+        _progressOverlay.Modulate = Colors.White;
         _progressOverlay.Color = new Color(0, 0, 1, 0.4f); // semi-transparent blue
 
         async void RunProgress()
@@ -67,9 +82,33 @@ public partial class BaseTile : Node2D
                 );
             }
 
-            _progressOverlay.Visible = false;
+            // Fade out the overlay instead of making it instantly disappear
+            await FadeOutOverlay(0.5f);
         }
 
         RunProgress();
     }
+
+    private async Task FadeOutOverlay(float duration)
+    {
+        var elapsed = 0f;
+        var startAlpha = _progressOverlay.Modulate.A;
+
+        // Play completion sound
+        if (_completionSound?.Stream != null)
+        {
+            _completionSound.Play();
+        }
+
+        while (elapsed < duration)
+        {
+            await ToSignal(GetTree(), SceneTree.SignalName.ProcessFrame);
+            elapsed += (float)GetProcessDeltaTime();
+            var alpha = Mathf.Lerp(startAlpha, 0f, elapsed / duration);
+            _progressOverlay.Modulate = new Color(1, 1, 1, alpha);
+        }
+
+        _progressOverlay.Visible = false;
+        _progressOverlay.Modulate = Colors.White; // Reset alpha for next use
+    }
 }
\ No newline at end of file
diff --git a/Sounds/Events/ConstructionComplete.wav b/Sounds/Events/ConstructionComplete.wav
new file mode 100644
index 0000000..7104cb6
Binary files /dev/null and b/Sounds/Events/ConstructionComplete.wav differ
diff --git a/Sounds/Events/ConstructionComplete.wav.import b/Sounds/Events/ConstructionComplete.wav.import
new file mode 100644
index 0000000..b249f09
--- /dev/null
+++ b/Sounds/Events/ConstructionComplete.wav.import
@@ -0,0 +1,24 @@
+[remap]
+
+importer="wav"
+type="AudioStreamWAV"
+uid="uid://xmgj505csg5x"
+path="res://.godot/imported/ConstructionComplete.wav-094dbaa5fa3f80e5fe8fc1583055a77d.sample"
+
+[deps]
+
+source_file="res://Sounds/Events/ConstructionComplete.wav"
+dest_files=["res://.godot/imported/ConstructionComplete.wav-094dbaa5fa3f80e5fe8fc1583055a77d.sample"]
+
+[params]
+
+force/8_bit=false
+force/mono=false
+force/max_rate=false
+force/max_rate_hz=44100
+edit/trim=false
+edit/normalize=false
+edit/loop_mode=0
+edit/loop_begin=0
+edit/loop_end=-1
+compress/mode=2