diff --git a/AGRARIAN_DEVELOPMENT_ROADMAP.md b/AGRARIAN_DEVELOPMENT_ROADMAP.md
index 8f7d245..925d22e 100644
--- a/AGRARIAN_DEVELOPMENT_ROADMAP.md
+++ b/AGRARIAN_DEVELOPMENT_ROADMAP.md
@@ -582,7 +582,9 @@ Target deliverable: A small group can join a server, spawn into one biome, gathe
 - [x] Create fire actor.
 - [x] Add fuel amount.
 - [x] Add ignition interaction.
-- [ ] Add extinguish logic.
+- [x] Add extinguish logic. Added native campfire extinguish support that
+  clears fuel, turns off replicated lit state, and reuses the fire visual
+  update path used by natural fuel depletion.
 - [x] Add warmth radius.
 - [x] Add light source.
 - [ ] Add cooking placeholder if needed.
diff --git a/Docs/TechnicalDesignDocument.md b/Docs/TechnicalDesignDocument.md
index 3f27c0f..ea52f9d 100644
--- a/Docs/TechnicalDesignDocument.md
+++ b/Docs/TechnicalDesignDocument.md
@@ -288,6 +288,10 @@ controller is silent until loops are assigned; placeholder or final audio can be
 added by setting the exposed sound properties on the placed controller or a
 Blueprint child.
 
+Campfires expose native extinguish logic through `AAgrarianCampfire::Extinguish`.
+Extinguishing clears remaining fuel, turns off replicated lit state, and reuses
+the same visual update path as natural fuel depletion.
+
 The first real-weather adapter is `UAgrarianWeatherProviderSubsystem`. It uses
 Open-Meteo forecast requests keyed by tile center latitude/longitude, parses the
 current temperature, daily low/high, precipitation, wind, humidity, cloud cover,
diff --git a/Scripts/verify_fire_extinguish_logic.py b/Scripts/verify_fire_extinguish_logic.py
new file mode 100644
index 0000000..a18ceac
--- /dev/null
+++ b/Scripts/verify_fire_extinguish_logic.py
@@ -0,0 +1,42 @@
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+
+EXPECTED = {
+    ROOT / "Source" / "AgrarianGame" / "AgrarianCampfire.h": [
+        "void Extinguish();",
+        "void SetLit(bool bNewLit);",
+    ],
+    ROOT / "Source" / "AgrarianGame" / "AgrarianCampfire.cpp": [
+        "void AAgrarianCampfire::Extinguish()",
+        "FuelSeconds = 0.0f;",
+        "SetLit(false);",
+        "void AAgrarianCampfire::SetLit(bool bNewLit)",
+        "UpdateVisualState();",
+    ],
+    ROOT / "Docs" / "TechnicalDesignDocument.md": [
+        "Campfires expose native extinguish logic",
+    ],
+    ROOT / "AGRARIAN_DEVELOPMENT_ROADMAP.md": [
+        "- [x] Add extinguish logic.",
+    ],
+}
+
+
+def main():
+    missing = []
+    for path, snippets in EXPECTED.items():
+        text = path.read_text(encoding="utf-8")
+        for snippet in snippets:
+            if snippet not in text:
+                missing.append(f"{path.relative_to(ROOT)} missing {snippet!r}")
+
+    if missing:
+        raise RuntimeError("Fire extinguish verification failed: " + "; ".join(missing))
+
+    print("PASS: campfire extinguish logic is implemented and documented.")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/Source/AgrarianGame/AgrarianCampfire.cpp b/Source/AgrarianGame/AgrarianCampfire.cpp
index 006e2a3..b28ae13 100644
--- a/Source/AgrarianGame/AgrarianCampfire.cpp
+++ b/Source/AgrarianGame/AgrarianCampfire.cpp
@@ -33,8 +33,7 @@ void AAgrarianCampfire::Tick(float DeltaSeconds)
 		FuelSeconds = FMath::Max(0.0f, FuelSeconds - DeltaSeconds);
 		if (FuelSeconds <= 0.0f)
 		{
-			bLit = false;
-			UpdateVisualState();
+			SetLit(false);
 		}
 
 		WarmNearbyCharacters(DeltaSeconds);
@@ -69,8 +68,6 @@ void AAgrarianCampfire::Interact_Implementation(AAgrarianGameCharacter* Interact
 	if (Inventory && Inventory->RemoveItem(TEXT("wood"), 1))
 	{
 		AddFuel(90.0f);
-		bLit = true;
-		UpdateVisualState();
 	}
 }
 
@@ -81,9 +78,21 @@ void AAgrarianCampfire::AddFuel(float Seconds)
 		FuelSeconds += FMath::Max(0.0f, Seconds);
 		if (FuelSeconds > 0.0f)
 		{
-			bLit = true;
+			SetLit(true);
 		}
-		UpdateVisualState();
+		else
+		{
+			UpdateVisualState();
+		}
+	}
+}
+
+void AAgrarianCampfire::Extinguish()
+{
+	if (HasAuthority())
+	{
+		FuelSeconds = 0.0f;
+		SetLit(false);
 	}
 }
 
@@ -92,6 +101,16 @@ void AAgrarianCampfire::OnRep_FireState()
 	UpdateVisualState();
 }
 
+void AAgrarianCampfire::SetLit(bool bNewLit)
+{
+	if (bLit != bNewLit)
+	{
+		bLit = bNewLit;
+	}
+
+	UpdateVisualState();
+}
+
 void AAgrarianCampfire::UpdateVisualState()
 {
 	if (FireLight)
diff --git a/Source/AgrarianGame/AgrarianCampfire.h b/Source/AgrarianGame/AgrarianCampfire.h
index 6be9cfb..b36c5e1 100644
--- a/Source/AgrarianGame/AgrarianCampfire.h
+++ b/Source/AgrarianGame/AgrarianCampfire.h
@@ -46,10 +46,14 @@ public:
 	UFUNCTION(BlueprintCallable, Category = "Agrarian|Fire")
 	void AddFuel(float Seconds);
 
+	UFUNCTION(BlueprintCallable, Category = "Agrarian|Fire")
+	void Extinguish();
+
 protected:
 	UFUNCTION()
 	void OnRep_FireState();
 
+	void SetLit(bool bNewLit);
 	void UpdateVisualState();
 	void WarmNearbyCharacters(float DeltaSeconds);
 };