65 Mill Hill, Dundrinne, Castlewellan, Co. Down, BT31 9NB is a Grade B2 listed building in the Newry, Mourne and Down local planning authority area, Northern Ireland. First listed on 27 May 1980.

65 Mill Hill, Dundrinne, Castlewellan, Co. Down, BT31 9NB

WRENN ID
sombre-column-cedar
Grade
B2
Local Planning Authority
Newry, Mourne and Down
Constituency
South Down MP: Chris Hazzard (SF)
Country
Northern Ireland
Date first listed
27 May 1980
Irish grid reference
J 346 365
Coordinates
54.26038, -5.93372
Source
NI Environment Agency listing

Also on this page: radon risk · weather exposure · detailed attributes ↓

Description

This is a well-preserved and relatively uncommon vernacular terraced building, likely dating to before 1834 and originally containing a shop. Located on the northeast edge of Castlewellan, it forms the middle and end of a three-house, two-storey terrace built on the steep slope of Mill Hill. Number 65 has a small, roughly constructed shop front with an undersized wooden signboard. Above the shop window is a small timber sliding sash window with 2 over 2 panes, set on a stone sill considerably wider than the window itself. The southwest gable is plain and smoothly rendered. A roughly constructed sliding sash window with 3 over 2 panes is visible on the rear southeast elevation, along with a 2-paned casement window on the ground floor. There is no rear door to number 65. Behind a small, enclosed farmyard are two dilapidated outhouses. The front and side facades are finished with smooth render, while the rear is whitewashed rubble. The roof is slated with Bangor Blue slates and features four evenly spaced chimney pots. The gable chimney pots are original, while the central ones are recently constructed, rendered and have concrete copings. Buildings are depicted on the Ordnance Survey map of 1834. The building retains vernacular characteristics and exhibits good quality and survival of its interior.

Local climate

65 Mill Hill, Dundrinne, Castlewellan, Co. Down, BT31 9NB sits in a wetter-than-average part of the UK, with an average of 990 mm of rain a year. This makes it wetter than 80% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 83% of listed buildings.

It experiences an average of 7 freeze-thaw cycles a year, fewer than 95% of listed buildings. Of these, 4 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.2°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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  • Detailed attributes — period, style, materials, features
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  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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Nearby listed buildings

  1. 67 Mill Hill, Dundrinne, Castlewellan, Co. Down, BT31 9NB Grade B2 7 m
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