Dean'S Yard

No. 3 and 3A Dean's Yard is a building associated with Westminster School, constructed around 1865 by Sir George Gilbert Scott and John Oldrid Scott. It features red brick with stone dressings facing Dean's Yard, while the rear range facing Great Smith Street is made of stone rubble with ashlar dressings and later slate mansards. The architectural style is Neo-early-Tudor.

The main front has three storeys, a basement, and dormered attics, measuring twelve windows wide in a slightly asymmetrical layout. The south wing has five windows that are recessed from the three-window centerpiece. The entrance is located in the right-hand side of the centerpiece and features a recessed camber arched porch with a quoined stone surround. The windows are mullioned transomed iron casements with drip moulds, including an oriel window through the first and second floors in the middle bay of the centerpiece and another oriel in the south wing. There are flush and weathered stone strings and a battlemented parapet on top. The area is enclosed by cast iron Gothic railings.

The rear stone range has four storeys, a basement, and an attic, spanning nine bays wide with a single-storey, two-bay north wing. It includes two recessed porches with drip moulds and irregular fenestration with square-headed mullioned-transomed casements, some featuring traceried heads. There are shallow oriel windows through the first and second floors on both sides. The building has irregular stone string courses and a battlemented parapet above a band course, with the north wing also featuring a battlemented design and an octagonal lantern topped with an ogee cupola behind the parapet.