WATERTOWN, Mass. (WHDH) – Crews worked through the evening Thursday to get a massive fire under control in Watertown.

The fire broke out at multi-family home on Sullivan just before 6 p.m., according to officials.

Three people, including two firefighters, were injured in the fire.

Fire officials said when they arrived a resident had already exited the house with burn wounds. The deputy fire chief said two firefighters also suffered smoke inhalation, but they were not seriously injured.

The second floor of the building suffered major damage. The building’s unusual shape posed a particular challenge for firefighters.  Meanwhile, rescuers also battled heavy rain and lightning; though the deputy said it wasn’t a major problem.

Red Cross volunteers told 7News that roughly 13 people were displaced.

Firefighters from at least four other communities responded to the fire.

(Copyright (c) 2026 Sunbeam Television. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)

Join our Newsletter for the latest news right to your inbox