The damage from the five-alarm fire that destroyed a Fells Point building Monday is estimated at $1.5 million, fire officials said Thursday. The fire caused $500,000 in damage to the three-story Fresh Food Market building at 517 S. Broadway and $1 million in damage to materials inside, Baltimore fire spokesman Chief Kevin Cartwright said. Baltimore fire investigators and police arson detectives are working to identify the cause, but fire officials warned it could take some time because the building is large and unsafe.