Lewisham Sewer Vent, Brick sewer vent shaft in Lewisham, Sydney, Australia

Lewisham Sewer Vent is a brick and stone shaft on The Boulevarde, about nine storeys tall, with rubbed red and cream glazed brickwork. Its octagonal pedestal rises from coursed rock-faced stone through English bond brick to a stone transition into a circular shaft with entasis. A Queen Anne revival fence and timber doors stand before it, and the pediment reads MBW-S&S; 1909.

The ventilation structure was built in 1909 by the New South Wales Public Works Department as part of the Northern Branch Main sewer development. It was part of the broader effort to modernize Sydney's underground infrastructure in the early 1900s.

The pediment above the entrance reads MBW-S&S; 1909, and the shaft is recognised by the National Trust of Australia (NSW). It is a local landmark visible from surrounding ridge tops and from Wardell Street, and the fence and doors sit within a streetscape of late Victorian and Federation houses.

The vent stands on The Boulevarde in Lewisham, about 25 metres north of Hunter Street, behind a Queen Anne revival brick and stone fence with timber doors. It is best seen from the street or from Wardell Street, where it stands out on the vista; the shaft itself is not open to visitors.

It stands among Sydney's most detailed sewer vents still containing original timber doors and stone transition elements from when it was built. Few other examples of early infrastructure engineering have retained so much of their original material and craftsmanship.