70 Trassey Road, Clonachullion, (south-west of Bryansford), Newcastle, Co Down, BT33 0QB

70 Trassey Road is a two-storey gabled vernacular farmhouse built between 1834 and 1859, located on the south side of Trassey Road, six miles west of Newcastle and four miles south-west of Bryansford in County Down.

The house comprises two distinct sections. The eastern section is the original dwelling, while the western section is a substantial extension constructed in 1982, which enlarged and converted a group of attached original outbuildings. The extension is now over twice the size of the original structure. The front façade of the extension is set back, following the line of these original outbuildings, and faces roughly north.

The front elevation of the original section features a small lean-to porch with a timber-sheeted door positioned left of centre. To the left of the doorway is a small sash window with vertical glazing bars (2 panes over 2), and a similar window appears to the right of the doorway. The first floor has three comparable but smaller sash windows aligned with the ground floor openings. The north façade of the extension is taller than the original section, as its roof ridge was not heightened when the façade was set back. This portion features two windows to ground floor and two to first floor positioned close to the eaves, all similar in style to the original house windows, though the first floor windows are set at a significantly higher level.

Both gables are irregularly shaped because the rear roof transitions to a flat form in its lower half as the façade climbs above the original eaves level. The rear façade includes a modern partly glazed door to the ground floor left, with three modern windows to the right. The first floor rear has four relatively large modern windows. The façade is finished in unpainted roughcast. The gabled roof portion is covered in natural slate, with two rendered chimney stacks serving the original section. Cast iron rainwater goods are present throughout.

Historical records show the property was entered in the second valuation of 1863 as the home of James Skillen with a rateable value of 15 shillings, a low valuation that might suggest the original building began as a single-storey dwelling later heightened, though the current owner reports finding no physical evidence to support this theory.

The surrounding farmyard is paved with a large flat expanse of concrete.