Penrhyn Estate Office is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 24 May 2000. Office. 2 related planning applications.
Penrhyn Estate Office
- WRENN ID
- waiting-ledge-finch
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Bangor Aberconwy MP: Claire Hughes (Lab)
- Country
- Wales
- Date first listed
- 24 May 2000
- Type
- Office
- Address
- Penrhyn Estate Office, Porth Penrhyn, Bangor, Llandygai, LL57 4HN
- OS grid reference
- SH 592 726
- Coordinates
- 53.2321, -4.10987
- Source
- Cadw listing
Description
The Penrhyn Estate Office is a single-storey building designed in a free Italianate style. It features regularly coursed and dressed rubblestone blocks, with tooled and rusticated quoins and ashlar surrounds for the doors and windows. The roof is part gabled and part hipped, covered with slate and has deep eaves.
The main section of the front elevation has a slightly projecting gable at the center, which includes carved single-purlin and wall-plate ends above deep verges. This section features a tripartite sash window set in a segmental-headed surround with a keystone. To the left, there is a porch that is slightly recessed from the gable, topped with a hipped slate slab roof and a bracketed cornice, leading to a 4-panel inner door. To the right of the gable, there is a 4-paned sash window in a segmental-headed surround with a keystone, and another sash window in the return to the left of the porch. There is also another projecting gable to the left, which mirrors the front gable with a tripartite sash window.
The building has a tall ridge stack with a moulded capping to the right of the front gable and a narrower stack at the rear. To the right of the main section, there is a long recessed range that includes a 6-panel door with curved and glazed top panels to the left, along with two 4-paned sash windows. This range has a ridge stack in the center and an integral end stack to the right, both of which are truncated.
Inside, the building retains a complete set of panelled window shutters and features a polished Penrhyn Quarry slate fireplace in the main office.
Local climate
Penrhyn Estate Office sits in one of the wettest parts of the UK, with an average of 1,210 mm of rain a year. This makes it wetter than 92% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 90% of listed buildings.
It experiences an average of 37 freeze-thaw cycles a year, more than 67% of listed buildings. Of these, 19 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 — 2 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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