Elvin Ayavaca, 18, of White Plains and Richard Barrero, 19, of Harrison were each charged with arson, burglary and criminal mischief.
Two 17-year-olds were also charged as juveniles. They are not being identified due to their ages.
Damage to the lighthouse was discovered Saturday by a Westchester County Parks employee. The worker discovered fire damage, broken windows and multiple antique items destroyed.