66, Grosvenor Street W1

No. 66 Grosvenor Street is a terrace house built in 1723 by Thomas Barlow, with late 18th century and mid 19th century alterations. It features a dark brick exterior with red brick dressings and a slate roof. The building has three storeys, a basement, and two tiers of dormers in the roof. The front has four windows, flanked by giant pilasters, and is topped with a stone cornice and a balustraded parapet. The ground floor has altered windows and a Tuscan columned porch to the left. The revealed sash windows have red brick dressings and flat gauged arches, with original glazing bars present only on the second floor. There is a continuous early 19th century cast iron balcony on the first floor. Inside, the staircase, designed by Charles Elliot in 1793, remains intact. The interior decoration from 1913 by W. H. Romaine-Walker includes Louis XVI boiseries in the principal rooms on the first floor, originally from the Convent des Soeurs St Maur in Paris.