Brolæggerstræde 5 is constructed with three storeys over a walk-out basement. The seven-bays-wide facade is finished with a belt course above the ground floor, a sill course below the first-floor windows and a modillioned cornice. It is plastered and painted in a blueish-grey colour on the ground floor and white on the upper floors. An arched gateway is located in the two bays furthest to the right. The keystone features the old cadastral number (No. 113") as well as the year of construction ("1797"). Above the gate is a stone plaque, with an inscription in gold lettering, commemorating that Carl Jacobsen was born in the building in 1942 and that J. C. Jacobsen undertook his first experiments with the brewing of lager beer (undergæret øl) in the building in 1838.The now bricked-ip basement entrance was originally topped by a Hood mould supported by corbels. Access to the main staircase of the building is cia a door in the gateway. The pitched red tile roof features five dormer windows towards the street. A six-bays-long side wing extends from the rear side of the building along one side of the central courtyard. it is integrated with the front wing via a canted corner bay. All the facades facing the courtyard are finished with iron vitriol yellow lime mortar.
