Trinity House Office is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 25 July 1994. Gate lodge.
Trinity House Office
- WRENN ID
- long-rampart-cobweb
- Grade
- II
- Local Planning Authority
- Isle of Anglesey
- Constituency
- Ynys Môn MP: Llinos Medi (PC)
- Country
- Wales
- Date first listed
- 25 July 1994
- Type
- Gate lodge
- Address
- Trinity House Office, Holyhead
- OS grid reference
- SH 241 833
- Coordinates
- 53.31797, -4.64182
- Source
- Cadw listing
Description
Trinity House Office is a two-storey building featuring rendered walls and a shallow plinth, topped with a pyramidal slate roof and two large chimneys. The front and rear of the building each have three windows, with the central windows being narrower, while the sides have two windows. Most of the windows are hornless sashes with eight panes. The northwest front includes a gabled porch with a side entrance doorway on the left and a small window at the front. To the northeast, a small yard connects to an outbuilding that has a monopitch roof.
Local climate
Trinity House Office sits in a wetter-than-average part of the UK, with an average of 1,030 mm of rain a year. This makes it wetter than 83% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 93% of listed buildings.
It experiences an average of 8 freeze-thaw cycles a year, fewer than 93% 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 0.3°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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 4 transactions since 2007
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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