90 Portmuck Road, Portmuck, Islandmagee, Larne, Co Antrim is a Grade Record Only listed building in the Mid and East Antrim local planning authority area, Northern Ireland. First listed on 23 October 1979. Cottage.

90 Portmuck Road, Portmuck, Islandmagee, Larne, Co Antrim

WRENN ID
crumbling-moat-equinox
Grade
Record Only
Local Planning Authority
Mid and East Antrim
Constituency
East Antrim MP: Sammy Wilson (DUP)
Country
Northern Ireland
Date first listed
23 October 1979
Type
Cottage
Irish grid reference
D 455 024
Coordinates
54.84842, -5.73494
Source
NI Environment Agency listing

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

Description

The remains of a former thatched cottage, dating from approximately 1820 to 1839, stand on an open, elevated site overlooking the sea in the Portmuck townland, near Islandmagee. The cottage is now in a completely derelict and ruinous condition, consisting of harled blackstone rubble. Associated with the cottage are the remains of a thatched potato house situated to the east, connected by a right-angled stone wall. The cottage was originally described in a 1972 survey as having harled and whitened walls and three chimneys, with a length of approximately 30 metres, encompassing both the dwelling and outbuildings under a single roof. It featured three sash windows on the southeast side: one with 16 panes, one with 12 panes, and one plain sash. The entrance door was originally sheeted. The site is shown on an Ordnance Survey map from 1832. The building was first listed in 1979, but was delisted on February 27, 1989, at which point it was already in a derelict state. The building is privately owned and has no specific architectural or historical interest recorded.

Local climate

90 Portmuck Road, Portmuck, Islandmagee, Larne, Co Antrim sits in a wetter-than-average part of the UK, with an average of 1,090 mm of rain a year. This makes it wetter than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 88% of listed buildings.

It experiences an average of 5 freeze-thaw cycles a year, fewer than 97% of listed buildings. Of these, 3 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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  • No EPC on record for this property
  • No sale records on file
  • No related consent applications matched
  • Detailed attributes — period, style, materials, features
  • No flood data for this area
  • Radon risk assessment
  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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  1. Lime kiln at Portmuck Bay, Portmuck, Islandmagee, Larne, Co Antrim Grade Record Only 354 m
  2. Lime kiln in front of, 62 Portmuck Road, Portmuck, Islandmagee, Larne, Co Antrim Grade Record Only 650 m
  3. 65 Mullaghboy Road, Mullaghboy, Islandmagee, Larne, Co Antrim 1.4 km
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  6. Ballypriormore Primary School, 111 Brown’s Bay Road, Islandmagee, Larne, Co Antrim Grade Record Only 1.7 km
  7. Second Presbyterian Church, Lunnon Road, Islandmagee, Larne, Co Antrim. 1.9 km
  8. 144 Browns Bay Road, Ballyprior More, Islandmagee, Larne, Co Antrim 2.3 km
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