The owner of the apartment building that burned down on May 17 is being charged with arson and conspiracy along with an alleged accomplice.
The investigation determined that it had been set using smoking materials. The man, who was not identified, will be summonsed to Central Berkshire District Court.
The youth, who is not being identified because he is under 17, will be summonsed to appear in Berkshire County Juvenile Court at a later date.