Porthyfelin House is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 25 July 1994. Bridge. 4 related planning applications.

Porthyfelin House

WRENN ID
under-bracket-khaki
Grade
II
Local Planning Authority
Isle of Anglesey
Constituency
Ynys Môn MP: Llinos Medi (PC)
Country
Wales
Date first listed
25 July 1994
Type
Bridge
Address
Porthyfelin House, Soldier's Point, Holyhead
OS grid reference
SH 237 833
Coordinates
53.31773, -4.64727
Source
Cadw listing

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

Description

Porthyfelin House is a two-storey building designed in a U-shape, featuring a central block with rear wings at each end. The exterior is finished in stucco, with band courses located below the eaves and at the first floor. The roofs have a shallow pitch and are covered with slate, while low rectangular chimney stacks made of stucco rise from the structure. The house originally had small-pane hornless sash windows, although some of the glazing bars have been replaced.

The central pedimented block contains three small-pane sash windows on each floor and is flanked by single window bays. The first floor has small-pane sash windows, while the ground floor features arched porches supported by Roman Doric columns. On either side of the central block, there are semi-hexagonal bays, each with three small-pane sash windows on both floors.

To the left, there is a wing with four windows, and a glazed lean-to is located on the right. The right wing includes a single window bay with a smaller inserted window on the ground floor, an advanced single window bay, paired windows, and a window on the first floor, along with a doorway on the ground floor. At the rear, the wings enclose a single-storey service block.

Local climate

Porthyfelin House 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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  • No EPC on record for this property
  • No sale records on file
  • Related listed building consents — 4 applications
  • 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
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