Carreglwyd is a Grade II* listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 1 August 1952. House.
Carreglwyd
- WRENN ID
- salt-zinc-hyssop
- Grade
- II*
- Local Planning Authority
- Isle of Anglesey
- Constituency
- Ynys Môn MP: Llinos Medi (PC)
- Country
- Wales
- Date first listed
- 1 August 1952
- Type
- House
- Address
- Carreglwyd, Holyhead, Llanfaethlu
- OS grid reference
- SH 308 877
- Coordinates
- 53.35972, -4.54316
- Source
- Cadw listing
Description
Carreglwyd is a gentry house dating from the 17th to 18th centuries, built in a simple Georgian style. It consists of a main range and a return wing containing the principal rooms, with further wings at the rear providing service accommodation. The house is constructed of local rubble masonry, with pebbledashed render on the front elevations. It has a slate roof with ridge and gable stacks, the main range featuring tall rectangular stacks with coupled square shafts. The principal, seven-window elevation faces southeast, overlooking the garden and lake, and features five hipped dormers within the roof, aligned between the main window bays. Sash windows are present throughout, primarily with 12 panes, although the ground floor has longer 15-pane windows. The attic dormers have horizontal sliding sashes. A central entrance is framed by a moulded wood architrave and topped with a rectangular fanlight containing radial glazing, above a panelled door. The return elevation to the left (southwest) is a similarly detailed five-bay range.
A one-bay addition, also detailed similarly, is set back from the principal elevation at the northeast end, with a hipped roof and hipped dormers to the front and rear. The roof slopes down as a catslide over a single-storey addition to the northeast. A later lean-to addition extends along the rear (northwest) wall. Two further wings are located to the rear of the main house, each two storeys high with hipped and half-hipped roofs and sash windows throughout. The rear elevations are unrendered. A lead cistern against the rear wall of the house bears the initials “I M G” and the date 1763.
The central entrance on the southeast front opens onto the main stack of a 17th-century hall. A staircase is located at the rear of the hall, with a dining room to its right and a sitting room and library to its left – these rooms appear to have been created during the 18th-century remodelling of the house, with contemporary detailing. However, the ground plan of the hall, its fireplace, and the ceiling plasterwork likely date back to the 17th century. A fine staircase features a wreathed handrail, moulded risers, and stringed, moulded cornices. Good quality plasterwork and joinery are found in other ground floor rooms, including panelled doors, window shutters, reveals, and soffits, along with fine fireplaces in the dining room and sitting room.
Local climate
Carreglwyd sits in a wetter-than-average part of the UK, with an average of 1,040 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 95% of listed buildings.
It experiences an average of 4 freeze-thaw cycles a year, fewer than 98% of listed buildings. Of these, 2 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
- 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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