Gable with sides of large multiple curves and topped with a pediment. This style is common throughout Kent (around 180 buildings) and has been linked to the arrival of protestant immigrants from the then catholic Spanish Netherlands in the 16th and 17th centuries. Many of the local examples clearly post-date this period, and no doubt reflect stylistic preference more than direct foreign influence.
Local examples (click to enlarge)
Sylvan House, Castle Row
Hospital Lane, off Castle Street
34 High Street,
opposite Guildhall Street
Smith's almshouses, Longport