Denegarth, 11 Hydepark Road, Mallusk, Newtownabbey, Co.Antrim, BT36 4PY

Denegarth is a detached multi-bay two-storey Arts and Crafts style house, built around 1900, located on the west side of Hydepark Road in Mallusk. The house is L-shaped on plan, with the entrance elevation facing north and the garden elevation facing south. A lower two-storey return extends to the north-west, abutted by a further single-storey return and a flat-roofed boiler room extension. A canted stairwell and single-storey canted porch occupy the re-entrant angle, with a later single-storey lean-to garden room infill addition to the south.

The roofs are half-hipped natural slate with overhanging eaves and timber bargeboards. Decorative red brick chimneys with concrete coping and replacement clay pots rise prominently. The walls are constructed of Flemish bonded red brick over a projecting plinth at ground floor, surmounted by a corbelled brick string course. Splayed diagonal buttresses punctuate the corners, while the first floor is finished in painted roughcast.

The windows are replacement square-headed uPVC casements set within segmental-headed openings, with red brick voussoirs at ground floor and painted masonry sills. The garden elevation is three bays wide, with a projecting right bay featuring a catslide roof and a small square window to the west. A canted bay at ground floor contains uPVC windows over a red brick apron with a leaded flat roof. The left and central bays each contain a single window at first floor, with the ground floor abutted by the later garden room addition featuring timber framed windows over red brick to sill height. The central entrance contains a replacement uPVC glazed door.

The west elevation comprises a central projecting chimney-breast with four decorative brick label stops supporting a vertical angled brick course, flanked at ground floor left and right by small square-headed window openings. Timber framed casement windows occupy each floor at the left, adjoining the return.

The entrance elevation is three bays wide, with the right bay completely abutted by the return. The left bay contains a single window at each floor, while the central bay contains a single window at first floor left. The ground floor is abutted by the canted porch, which features timber framed windows with leaded lights over a brick apron and a timber panelled entrance door with leaded glazed toplights. The stairwell has applied half-timber boarding at first floor, with a pair of stepped stairwell windows to each elevation and a single timber framed window to ground floor at the north.

The east elevation comprises a central projecting chimney-breast detailed as the west elevation, flanked at left and right by a window at first floor. The roof catslides at the left, covering a further small square window at first floor left, with a single window at ground floor left. The return east elevation is abutted on the left by the stairwell, with its exposed section containing two windows at ground floor and a single window at first floor, and a continuous brick pier at the corner rising to a chimney. This is abutted at the right by a single-storey return containing a single window at the left. The west elevation contains two windows at ground floor and two windows at first floor right, abutted at the left by the boiler room containing a square-headed timber sheeted door. The north elevation is blank with a projecting chimney-breast at the left and a modern chimney-breast at the right, abutted at ground floor by a single-storey return containing a single window without a sill and the boiler room containing a square-headed timber sheeted door.

The building is set within mature gardens bounded on all sides by hedging. Access to the east is through double decorative wrought-iron gates supported by a pair of square brick piers connected by swan-neck walling to outer piers. Several modern rendered bungalows surround the house within the grounds. Cast-iron ogee gutters and round downpipes serve the drainage.

The house retains much of its original character through delicate brickwork detailing and ornate chimneys, enlivened by the decorative canted porch and stairwell. However, the site and house have been significantly altered in more recent years, including replacement windows, a modern garden room and boiler room, and additional dwellings on site.

The building first appears on the fourth edition Ordnance Survey Map dated 1920-21, captioned 'Denegarth'. It does not appear on the Valuation Revision Map dated 1889-1906.