The annex building was built in 1889–90 after a design by local architect Walter Whincop.
It is described in Volume 44 of the Survey of London as "the last of a locally distinctive type to survive in Woolwich".
Unlike the adjacent church hall it is not a listed building.
The main façade on Calderwood Street, now painted white, consists of three bays and three storeys (including the basement).
It is flanked by two single-storey porches.
The western entrance was for the children attending Sunday school, the eastern entrance was for the soldiers.
The original west doors were replaced by ornamental doors of wood and bronze made in Rajasthan.
In the basement were baths and a café for the military men, on the ground floor their reading room and a meeting room, on the top floor was the Sunday school.
The building's main use currently is that of a langar hall (a communal refectory serving vegetarian food) with a kitchen.
On the top floor are meeting rooms, a library, Granthi quarters and offices.
The basement is used for various functions and serves as a Saturday school for pupils 5–18 years old, the Guru Nanak Khalsa School Greenwich.
The annex building was built in 1889–90 after a design by local architect Walter Whincop. It is described in Volume 44 of the Survey of London as "the last of a locally distinctive type to survive in Woolwich". Unlike the adjacent church hall it is not a listed building. The main façade on Calderwood Street, now painted white, consists of three bays and three storeys (including the basement). It is flanked by two single-storey porches. The western entrance was for the children attending Sunday school, the eastern entrance was for the soldiers. The original west doors were replaced by ornamental doors of wood and bronze made in Rajasthan. In the basement were baths and a café for the military men, on the ground floor their reading room and a meeting room, on the top floor was the Sunday school. The building's main use currently is that of a langar hall (a communal refectory serving vegetarian food) with a kitchen. On the top floor are meeting rooms, a library, Granthi quarters and offices. The basement is used for various functions and serves as a Saturday school for pupils 5–18 years old, the Guru Nanak Khalsa School Greenwich.
Gurdwara Sahib Woolwich