11 and 12, Northumberland Place

Nos. 11 and 12 Northumberland Place are shops with accommodation above, built around 1810, with 20th-century additions. The buildings are constructed from limestone ashlar. No. 11 features a pantile roof, while the roof of No. 12 is not visible from the street. The plan is a single depth, with No. 11 having a splayed corner that faces both Northumberland Place and Union Passage.

The exterior consists of three storeys and an attic, with three windows on each building. No. 11 has two coupled windows to the left, one at the corner, and one on the return. All windows are sash types in plain reveals. No. 11 has late 19th-century plate glass plain sashes, while No. 12 has early 19th-century six-over-six sashes. No. 11 also features two blind windows: one at the top left on the main front and one at the top on Union Passage. There is a shop from 1901 at No. 12 designed by W. Palmer, and a mid-20th-century shop at No. 11. Both buildings have a cornice, parapet, and mansard roofs, with one dormer each; the dormers are paired at No. 11 and have plain sashes, while No. 12 has flat-topped dormers.

Inside, No. 11 has an altered staircase and is not otherwise of interest, while No. 12 has not been seen. Historically, Northumberland Place was built on the site of a medieval close known as Marchant's Court, which is depicted on Gilmore's Map of 1694.