Lewes House

House, originally dating to around 1720 to the rear, with a front block constructed around 1810. The building is constructed of grey headers with red brick dressings, featuring doubled brick quoins and a plain parapet concealing the slate roof; various brick stacks are present at the ends and rear. The main front is three storeys high, displaying a regular facade of five windows with glazing bar sashes. A central entrance is accessed via eight steps, leading to a rusticated plastered entrance arch with a panelled door and arched overlight featuring an octagonal lantern. A deep porch stands before the entrance, supported by Ionic columns and topped with an open triangular pediment. Paved areas flank the doorway, enclosed by an iron arrow-head railed surround.

The garden front, dating from the early 18th century, also features grey headers with red dressings and red brick, with a central projection. It is topped with a plain tiled hipped roof and a tall ridge stack to the left. The garden front has two storeys, a plinth with roll-moulding, a cornice-band and cornice to the parapet. A central pedimented projection is focal to the design, with two bays to the left, three bays on the projection (the outer ones being narrow), and three bays to the right, featuring two wide windows on the ground floor. Glazing bar sashes are present, with gauged heads. A central panelled door has a cast-iron dog-gate, set within a moulded blocked surround featuring a triple keystone supporting a cornice moulding. A two-storey early 19th century wing projects to the left, with a hipped roof and a central hipped projection. A half-glazed door, within a round-arched surround, is located to the right. This wing, faced in knapped flints to the west, ends in a brick gate-pier leading to a stable court.

The interior includes a committee room with a wide segmental arch recess featuring colonettes supporting an ornate surround, along with a panelled fire-surround and a coved cornice. The hall features a groin vault on brackets with triglyph decoration, and a screen to the rear stair-hall containing a colonnade of attached Doric order with a triglyph and metope frieze. The registry holds a wide segmental arch recess, also with colonnettes supporting the surround. A fireplace is notable for its doubled columns supporting a decorative mantel with swags and a rustic scene, all complemented by panelling and an acanthus bracket cornice. The local land charges office features a bracketted cornice. The chief executive's secretary's office contains an eared fire-surround with a bolection mould supporting a mantel shelf and eared surrounds with Greek key decoration, alongside a moulded cornice. The chief executive’s room displays an eared fire-surround with a dentilled mantel. The electoral registration office features a late 18th century fire-surround with swags and a central panel depicting nymphs beneath a mantel. The district secretary’s office has a marble fire-surround with a dentilled mantel. Additional fireplaces are found on the second floor of the north block. The staircase is a three-flight rectangular design with turned balusters, square knops, fluted columnar newels, a ramped flat hand-rail, a foot scroll, and Greek key decoration on the string of the landing, all topped by a bracketted cornice.