305 Jefferson Street is a historic warehouse in Huntsville, Alabama. It was built by grocery wholesaler W. L. Halsey circa 1925. Halsey operated the warehouse until 1957, when it was sold and rented to other tenants, at times including a beer distributor and a Salvation Army storage facility. It was subdivided into three units in the 1970s. The brick building is rectangular, with the narrow side facing the street. On the main façade, a double entry door is flanked by pairs of two-over-two sash windows. The south side of the building has two large openings for the warehouse doors; these have since been replaced with glass doors leading to the middle unit. Two of the three original sliding wood doors remain, and cover the glass entries in the middle unit. More two-over-two windows are distributed along the south wall. The rear originally had a warehouse door, now replaced by double glass doors, with a single two-over-two window on either side.