St Ambrose

St Ambrose, located at 183 Castle Street in Portchester, is a building that dates back to the 18th century. Originally constructed as a single house, it has since been divided into two separate residences. The building was initially made of grey brick with red brick window dressings, although the first floor of No 183 has been altered with new red and grey brick, likely in the 19th century. The structure features an old tiled roof and stands two and a half storeys high, with one hipped dormer on each side.

No 183 has a three-light sash window, while No 185 features two sash windows with exposed frames and glazing bars, along with a central red brick blank section that has an old fire insurance mark on the south side. The ground floor of No 183 includes a three-light sash window set in a stucco surround with late 19th-century glazing. The door has a plain rectangular fanlight and a damaged trellis porch. The south side of the facade boasts a well-crafted doorcase with a pediment, consoles, pilasters, and an attractive radial fanlight. Additionally, there is an advanced 19th-century shop front with end consoles and fluted pilasters.

Nos 183 and 185, along with Nos 189, 193 to 201 (odd), No 195A, and Nos 209 to 219 (odd), form a cohesive group with Nos 200 to 204 (even) located across the street.