This single-domed mosque is locally considered to be contemporary with Khan Jahan Ali style mosques of Khalifatabad, present date Bagerhat, Bangladesh.  Based on architectural style the date of construction can be estimated to be mid-fifteenth century (K. Alamgir). The mosque was thoroughly restored and repaired by the Department of Archaeology, Bangladesh and it is now a protected monument.

The Singair Mosque is a Sultanate mosque that has a square structure crowned with a single dome. The mosque is situated about 620 feet to the south-east of the famous Shaitgumbad Mosque. The mosque is a square of 43'9" x 43'9" externally while internally it has a square plan of 26'0" x 26'0". The structure is a single chamber, roofed over by a hemispherical dome. The eastern façade has three arched openings to the prayer hall while the northern and southern façades have a central opening. The mihrab is aligned with the central entrance at east and the central portion of the qibla wall is projected westward from the ground to the roof. Stylistically this kind is known as Khan Jahan Ali architecture, commonly found in and around south-western part of Bangladesh.

The square structure boasts 7' thick walls and is buttressed by four massive corner circular turrets with five bands of brick moldings. These turrets end at the level of parapet walls and ribbed in typical Bengali Sultanate fashion. The façades are capped by curvilinear cornices of pre-Mughal type. Exterior façades are of plain brick texture with framed arched opening with horizontal rows of terracotta designs.  On the eastern façade there are three arched entrances within a rectangular frame while the north and south walls are pierced with single entrance doorways. The central mihrab on the west wall, framed within a rectangular brick molding, is sparely decorated with terracotta rosettes and foliate motif.