issued those but unfortunately for every job that was ever done site may say reroofing and give you a,cfc, but it does not say one family or two family, just describes the job and in the 1950s it was five years later that it said only for conditions in the building code. >> so if you -- this document is the key document for us to determine what is the legal use and occupancy of your building so we will always, if there's an issue we will go to the certificate of final completion and occupancy. that's you know, three story building and that's legally what you have according to our records. if you want to show us a mistakes has been made you bring that documentation forward. this is the key government document. someone mentioned the 3r report. it's a collection of records and not an original source. it's a collection saying yes there was a permit issued on such and such date. it's not the original. just a reference to the originals. if someone says my, 3r says two units but it's three, the 3r report is not the controlling document. it's simply an information compilation. here's a report on