A Halloween party at a $10 million Sydney mansion, intended for a small group of teenagers, escalated into chaos when approximately 200 gatecrashers descended on the property. The home belongs to Australian private markets executive David Bluff and NSW Industrial Relations Commissioner Bronwyn Byrnes.

What began as an intimate gathering for 15 to 20 teenagers reportedly spiraled out of control after word spread on social media, attracting a much larger crowd. The influx of uninvited guests led to significant disruption, with gatecrashers scaling neighboring fences and a carport roof while attempting to gain entry.

Emergency services were called to the Clovelly residence shortly after the party began. The NSW Public Order and Riot Squad and paramedics responded to the scene. Paramedics treated intoxicated teenagers, and at least one girl was taken to the hospital on a stretcher.

Neighbors described Bluff and Byrnes as a "lovely family" who were "deeply apologetic" about the incident. The couple has reportedly sent letters to neighbors to apologize for the disturbance and have pledged to cover any damages caused by the partygoers. Family members were also seen assisting with the cleanup the following morning.

Paramedics treated intoxicated teenagers at the scene, with at least one girl taken to hospital on a stretcher as the Halloween celebrations ended in disaster. The spectacular mansion where the house party descended into chaos is located in the exclusive beachside enclave of Clovelly.