The covered area in front of a commercial building is illuminated from a great height with efficient downlights. The focus is placed on the square pillars supporting the roof using very narrow beam in-ground floodlights on the front side. On the sides and at the rear, they benefit from the light of the downlights. A roof panel projecting over the entrance is fitted with recessed ceiling luminaires to emphasise the way into the building. The illumination level here is about 100 lx. The general lighting of the interior space and of the commercial rooms is effected with large-format, very flat ceiling luminaires.