Heavy flames shot through the roof, forcing firefighters to battle the blaze from the outside.
Authorities say nearly a dozen people were injured, none seriously. They were rushed to Jacobi Medical Center. A cat and dog were killed in the flames.
Fire marshals determined that the power strip sparked the blaze.
The FDNY recently announced budget-cutting plans to cut staffing in half for City Island's lone firehouse during the overnight hours.
Under the plan, Ladder 53 would be closed between 6 p.m. and 9 a.m. daily. Critics claim the ladder company - the only one on City Island - should stay open 24 hours a day.
FDNY officials respond that Engine 70 - which shares Ladder 53's firehouse - will remain staffed overnight.
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