Greenfield, 29 Greenhill Road, Ballybrick Road, Katesbridge, Banbridge, Co Down, BT32 5QY

Greenfield is an asymmetrical two-storey four-bay farmhouse built around 1814–1815, located off Greenhill Road approximately one mile south of Katesbridge in Co Down. The building retains its historic character, style and proportions, demonstrating the development of formality in vernacular domestic architecture. It represents a good example of an established farmhouse with surviving outbuildings in an original rural setting, a type increasingly rare in the area.

The house has a rectangular plan form with a rear return. It features a pitched natural slate roof with clay ridge tiles and stone skews, cement rendered gable chimneys with octagonal clay pots, and aluminium rainwater goods. The front elevations and gables are finished in roughcast render over a cement rendered plinth with long-and-short quoins, whilst the rear walling is lime rendered.

The fenestration comprises 6/6 exposed timber box sash windows with granite cills and plain smooth rendered surrounds. A notable tripartite window with a 6/6 central sash flanked by 2/2 side sashes with horizontal glazing bars is present; one glass pane is inscribed with the date 1814. The rear elevation includes 1/1 sliding sash windows and varying sized wrought-iron roof lights to the rear pitch. Windows throughout show different configurations reflecting the asymmetrical arrangement of elevations.

The front elevation faces east and is asymmetrically composed. A flat-roofed single storey porch with plain pilasters, simple moulded capitals and corbelled eaves occupies the left of centre. This porch contains a four-panelled bolection moulded timber front door with wrought iron ironmongery positioned to the right cheek, flanked by a tripartite window to the left and a single window further left. The porch is accessed by two steps. To the right of the porch are two further tripartite windows, the rightmost accompanied by a double leaf glazed panelled timber door. Each window opening is topped with an embossed fruit-bowl moulding centred on the head. Four windows light the first floor.

The left gable is asymmetrically arranged with a single 6/6 window with margin panes at ground floor left, and two first floor windows. A two-storey gable ended return extends to the left; its gable end comprises a diminished 4/4 sash window left of centre with two first floor 1/1 sliding sash windows with vertical margin coloured panes. A single storey lean-to extension abuts the left cheek of the return and the rear elevation, fitted with varying sized windows.

The right gable is asymmetrically arranged with an enlarged ground floor window to the right and two first floor windows. The rear elevation is similarly asymmetrical, featuring a 1/1 sliding sash window and replacement split timber sheeted door to the left, with four windows to the first floor, the far left being a 1/1.

The entrance comprises a dressed granite plinth wall supporting cast-iron railings, terminated by panelled granite piers. Central matching gates are mounted on large dressed granite piers with sweeping tapered stone caps. A sweeping driveway on an incline leads through a wooded landscaped garden with some remaining portions of rubble walls.

Outbuildings to the rear address the yard, constructed of rubble masonry built to courses with brick surrounds to openings and pitched natural slate roofing with brick eaves. A two-storey block to the north is lime rendered to its south face, with the stone partially exposed; masonry steps provide access to the first floor. The outbuildings feature fixed lights and timber sheeted doors. The setting extends into extensive rural landscape beyond the site.

Historical records indicate that Greenfield appears on the first edition Ordnance Survey map of 1833–34, which depicts it as an oblong building. The farm's two surviving barns, located to the west and north-west of the house, had been constructed by the 1830s. A third surviving outbuilding, a single-storied slate building to the north-west of the barns, was erected by 1860. The Townland Valuations of around 1830 record the property valued at £7 5s and occupied by the Reverend Alexander Heron, minister of Ballyroney Presbyterian Church from 1826 to 1865. By 1862, Griffith's Valuation recorded an increased value of £14, reflecting the construction of additional outbuildings by 1860. The Reverend Alexander Heron remained resident, leasing from James Birch, until his death in 1865. His will bequeathed the house, farm, household goods, farming implements, livestock and equipment to his son Alexander Heron Junior, who resided at Greenfield until his death in 1923. The 1901 Census described Greenfield as a first-class dwelling containing 13 rooms, with Alexander Heron Junior noted as a Justice of the Peace and coroner, residing with his wife Sarah and three children. The 1911 Census Building Return documented an extensive farm comprising two stables, four cow houses, a piggery, fowl house, boiling house, barn and coal house located in the outbuildings to the west. Alexander Heron Junior's widow Sarah died in 1922, followed by the doctor himself in 1923, leaving possession to their son Robert Heron, who occupied the property until 1929. Greenfield was listed in 1977 and remains occupied. Apart from a small outbuilding constructed to the south-west of the house by 1860 (now demolished), the original outbuildings survive; two small modern garages have been erected in recent years.