Mynachdy is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 2 September 1952. Gentry house.
Mynachdy
- WRENN ID
- iron-cobalt-hazel
- Grade
- II
- Local Planning Authority
- Isle of Anglesey
- Constituency
- Ynys Môn MP: Llinos Medi (PC)
- Country
- Wales
- Date first listed
- 2 September 1952
- Type
- Gentry house
- Address
- Mynachdy, Cylch-Y-Garn
- OS grid reference
- SH 309 923
- Coordinates
- 53.40108, -4.54432
- Source
- Cadw listing
Description
Mynachdy is a two-storey gentry house, likely dating to the late 17th century, with a long, seven-window main block and wings to the rear creating a U-shaped plan. It is constructed of rubble masonry, rendered and limewashed, with boulder foundations. The roof is covered in thin slates, and features rendered gable and axial stacks with dripstones and capping. The principal east-facing elevation has a seven-window range divided into two sections: three windows on the left (south) and four windows on the right (north). A French door is located at the left end of the four-window section, with a large axial chimney above it. The windows are 12-pane hornless sashes, though many have been replaced with modern uPVC frames. The rear (west) wall of the main block has three windows of varying sizes, mostly modern, and a modern French door offset to the left (north) end.
A service wing is positioned behind the three-window section. Its south-facing elevation presents a two-window range with a French door on the left (west). The service wing features modern uPVC windows and door, with slate sills. The gable return has two windows on each floor; the left (north) windows are at a higher level, likely indicating the staircase position within. A Venetian window is located on the ground floor left side, with subsequent 12-pane hornless sashes to the right and above, the remaining window being a modern replacement. The north elevation has a rear entrance offset to the left (east) end, accessed through a modern half-glazed lean-to porch/conservatory set into the angle with the rear of the main block; a modern window sits above.
An additional wing extends at a right angle from the northwest corner of the main block, built into the sloping ground. The south elevation, facing the courtyard and service wing, has a three-window range with a glazed doorway offset to the left (west), and features a mix of 12-paned horned sashes and modern replacements. External steps at the west gable provide access to the north elevation, which displays a three-window range with a central doorway between the second and third window. This elevation also features 12-paned horned sashes with slate sills.
The interior was not inspected during the survey, but is reported by RCAHMW to have been modernised. It is said to contain panelled doors with moulded architraves and cornices in the living room and rear wing. Original oak wall panelling remains in the living room, along with an original fireplace featuring a bolection moulded architrave. There is a late 17th-century staircase with turned balusters, a moulded string, and panelled newels. Some chamfered beams are also present.
Local climate
Mynachdy 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
Sign in or create a free account to unlock:
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
Similar buildings
The closest matches to this building from all 493,000 UK listed buildings, by architecture, period and materials.
this building 1 similar nearby listed buildings