Nursing Home/Senior Living, Residential Belmont, CA – 4 a.m. fire at senior residential complex controlled with help from sprinkler system; No injuries November 8, 2015 viking210 Firefighters battled to get a blaze under control Friday morning at a senior living community complex where 35 people were evacuated and was likely started by some cardboard boxes set near a wall heater, a fire captain said. The San Mateo County Fire department said the 2-alarm apartment fire in Belmont in the 2400 block of Carlmont Drive. started about 4 a.m. on the second floor. No one was injured. Capt. Patrick Halleran credited the building’s sprinkler system for saving lives. He added the boxes were in the apartment because an older gentleman had recently moved in.