Metropolitan Avenue/ Grand Street (G) has two tracks and two wall platforms. The north exit leads to the Mezzanine and the connection to the L, The station had a full mezzanine but the south portion is used by a police facility and as employee space and offices. Neat IND icon tiles indicate "To Street and Transfer". The south exit now is an emergency exit and leads to Grand Street. A center exit is also sealed Artwork is by Jackie Chang and is entitled "Signs of Life" and was installed In.2000. It was renovated by NYCT in house contract. The passageway to the L ramps up and splits with the right half going to the Brooklyn L and the left leads to a crossunder to the Manhattan L.

Lorimer Street (L) At the west end of the station is a maze of ramps, stairways and passages which connect the two lines. There is a slight curve at the platform's east end. A full renovation occurred in 1999, lasting for over a year and a half. There is no mezzanine at the Manhattan end; two platform-level exits lead to Metropolitan Avenue above. Mosaic band predominates browns, white and light blue with greys and golds at the edges. This station is one of the first to feature properly-recreated full mosaic tablets, featuring the proper colors and materials. Sections of frieze were also treated in this way. There is artwork in stairwells and in the passageways as well. Lorimer Street opened September 21, 1924, two side platforms. A mezzanine exists at the Canarsie end.