diff --git a/realestate-lab/app/db.py b/realestate-lab/app/db.py
index aa81e65..45b4dc6 100644
--- a/realestate-lab/app/db.py
+++ b/realestate-lab/app/db.py
@@ -401,6 +401,13 @@ def delete_announcement(ann_id: int) -> bool:
     return cur.rowcount > 0
 
 
+def delete_closed_announcements() -> int:
+    """status='완료' 공고 일괄 삭제. 삭제된 건수 반환."""
+    with _conn() as conn:
+        cur = conn.execute("DELETE FROM announcements WHERE status = '완료'")
+    return cur.rowcount
+
+
 def update_all_statuses():
     """모든 진행중 공고의 status를 날짜 기반으로 재계산."""
     with _conn() as conn:
diff --git a/realestate-lab/app/main.py b/realestate-lab/app/main.py
index 9edf760..d436058 100644
--- a/realestate-lab/app/main.py
+++ b/realestate-lab/app/main.py
@@ -8,7 +8,7 @@ from apscheduler.schedulers.background import BackgroundScheduler
 
 from .db import (
     init_db, get_announcements, get_announcement, create_announcement,
-    update_announcement, delete_announcement, toggle_bookmark,
+    update_announcement, delete_announcement, delete_closed_announcements, toggle_bookmark,
     update_all_statuses,
     get_profile, upsert_profile, get_matches, mark_match_read,
     get_last_collect_log, get_dashboard,
@@ -112,6 +112,13 @@ def api_announcement_bookmark(ann_id: int):
     return result
 
 
+@app.delete("/api/realestate/announcements/closed")
+def api_announcement_delete_closed():
+    """status='완료' 공고 일괄 삭제."""
+    count = delete_closed_announcements()
+    return {"ok": True, "deleted": count}
+
+
 @app.delete("/api/realestate/announcements/{ann_id}")
 def api_announcement_delete(ann_id: int):
     if not delete_announcement(ann_id):