No. 18 And Attached Railings

House, now flats, at 18 Burlington Street on the west side. Built around 1786 and attributed to architect John Palmer, with construction by Richard Hewlett. The building has undergone alterations in the 19th and 20th centuries.

The exterior is constructed of limestone ashlar to the front, with rubble below the basement windows and ashlar to the rear. It features a double pile parapeted mansard roof with Welsh slate to front and rear, and a coped party wall with two rebuilt stacks, partially in reconstituted stone to the left.

The building comprises three storeys, an attic and basement, arranged across a three-bay four-window front. The first floor contains two plate glass horned sashes in plain reveals with stone sills and wrought iron balconettes to the left and centre, a small single pane horned sash to centre right, and to the right a plate glass horned sash in a splayed reveal with a stone sill in a later opening, positioned lower and to the right of its original location. The second floor has three plate glass horned sashes in plain reveals, with wrought iron window guards to the centre and left, and a small casement window to the far right. The ground floor has two plate glass horned sashes in splayed reveals with stone sills and wrought iron balconettes to the left, a six-panel door with flush, fielded and glazed panels and a cast iron lion's mask knocker set within a Doric doorcase (the pediment has been removed due to a repositioned staircase window), and a small three-pane window to the right of the doorcase. One step leads to a Pennant paved crossover with a cast iron footscraper. The basement contains two six-over-six sashes in plain reveals with stone sills, ashlar and 20th-century glazed infilling under the crossover, and limestone area steps refaced in concrete with a wrought iron handrail. Two single dormers have two-over-two sashes. A band course over the ground floor is cut through by the first floor window to the right; the sill band to the second floor is cut off to the right. The building is finished with a modillion eaves cornice and coped parapet.

The rear elevation features plate glass horned sashes with evidence of a former verandah with tent roof to the first floor. The first floor windows were formerly lowered, with a band course over the first floor and a small ashlar extension above the ground basement.

Attached wrought iron railings and a gate with urn tops and urn finials to the centre and right (missing to the left) stand on limestone bases.

The development was undertaken in conjunction with Portland Place by John Hensley. Nos 12-15 Burlington Street, Nos 1-4 Portland Place and Nos 17-20 Portland Place were developed on leasehold land demised to John Hensley on 30 March 1782 for three lives by legatees of Morford's Estate, with building leases granted on 25 March, 24 June and 31 October 1785. The east side of Burlington Street and Portland Place stood on freehold land belonging to Hensley, conveyed to him and William Phillips by the Duperee family on 1 and 2 January 1772, and subsequently transferred by lease and release on 23 and 24 June 1783 from Hensley, Phillips and their trustee to Daniel Tanner as trustee for Hensley alone.