diff --git a/src/backend/controllers/hosting/HostingController.js b/src/backend/controllers/hosting/HostingController.js
index d1ac44378..650aeb7e9 100644
--- a/src/backend/controllers/hosting/HostingController.js
+++ b/src/backend/controllers/hosting/HostingController.js
@@ -93,6 +93,22 @@ export class HostingController extends PuterController {
                     userId: req.actor.user.id,
                 });
 
+                // Same event the `puter-subdomains` driver fires on delete —
+                // listeners (CDN purge, abuse tracking, worker cleanup)
+                // depend on it.
+                try {
+                    this.clients.event.emit(
+                        'subdomain.delete',
+                        {
+                            subdomain: row.subdomain,
+                            uid: String(row.uuid),
+                        },
+                        {},
+                    );
+                } catch {
+                    // Non-critical.
+                }
+
                 res.json({});
             },
         );
diff --git a/src/backend/controllers/hosting/HostingController.test.js b/src/backend/controllers/hosting/HostingController.test.js
index b9e9bc153..0eac28f74 100644
--- a/src/backend/controllers/hosting/HostingController.test.js
+++ b/src/backend/controllers/hosting/HostingController.test.js
@@ -181,4 +181,24 @@ describe('HostingController /delete-site', () => {
         expect(captured.body).toEqual({});
         expect(await server.stores.subdomain.getByUuid(site.uuid)).toBeNull();
     });
+
+    it('emits subdomain.delete so listeners can purge caches', async () => {
+        const { userId, actor } = await makeUser();
+        const site = await makeSite(userId);
+        const emitSpy = vi.spyOn(server.clients.event, 'emit');
+
+        try {
+            await deleteSite(
+                makeReq({ body: { site_uuid: site.uuid }, actor }),
+                makeRes().res,
+            );
+            expect(emitSpy).toHaveBeenCalledWith(
+                'subdomain.delete',
+                { subdomain: site.subdomain, uid: String(site.uuid) },
+                {},
+            );
+        } finally {
+            emitSpy.mockRestore();
+        }
+    });
 });