Trouble Finding Boston, MA Address

I'm having trouble finding a specific address in Boston, MA. I think that part of the street was demolished or something like that through time and it no longer exists 719 Fremont St in Boston. I've seen Fremont towards the south and also Tremont but nThe last9. The last name of the owner/renter was Clouverakis or Hlouverakis. He's in Line 12.