Earthquake-induced　loss　of　buildings　is　a　fundamental　concern　for　earthquake-resilient　cities.　The　FEMA　P-58　method　is　a　state-of-the-art　seismic　loss　assessment　method　for　buildings.　Nevertheless,　because　the　FEMA　P-58　method　is　a　refined　component-level　loss　assessment　method,　it　requires　highly　detailed　data　as　the　input.　Consequently,　the　knowledge　of　building　details　will　affect　the　seismic　loss　assessment.　In　this　study,　a　seismic　loss　assessment　method　for　buildings　combining　building　information　modeling　(BIM)　with　the　FEMA　P-58　method　is　proposed.　The　detailed　building　data　are　automatically　obtained　from　the　building　information　model　in　which　the　building　components　may　have　different　levels　of　development　(LODs).　The　determination　of　component　type　and　the　development　of　the　component　vulnerability　function　when　the　information　is　incomplete　are　proposed.　The　modeling　rules　and　the　information　extraction　from　BIM　through　the　Autodesk　Revit　application　programming　interface　(API)　are　also　proposed.　Finally,　to　demonstrate　the　rationality　of　the　proposed　method,　an　office　building　that　is　available　online　is　selected,　and　the　seismic　loss　assessments　with　various-LOD　BIM　data　are　performed　as　case　studies.　The　results　show　that,　on　the　one　hand,　even　if　the　available　building　information　is　limited,　the　proposed　method　can　still　produce　an　acceptable　loss　assessment;　on　the　other　hand,　given　more　information,　the　accuracy　of　the　assessment　can　be　improved　and　the　uncertainty　can　be　reduced　using　the　proposed　method.　Consequently,　this　study　provides　a　useful　reference　for　the　automation　of　the　refined　seismic　loss　assessment　of　buildings.