Plas Porth Uchaf is a Grade II listed building in the Conwy local planning authority area, Wales. First listed on 8 October 1981. YMCA building.
Plas Porth Uchaf
- WRENN ID
- turning-oriel-dust
- Grade
- II
- Local Planning Authority
- Conwy
- Constituency
- Bangor Aberconwy MP: Claire Hughes (Lab)
- Country
- Wales
- Date first listed
- 8 October 1981
- Type
- YMCA building
- Address
- Plas Porth Uchaf, 1 Watkin Street, Walled Town
- OS grid reference
- SH 779 774
- Coordinates
- 53.28027, -3.83264
- Source
- Cadw listing
Description
Plas Porth Uchaf is a 2½-storey, single-fronted house featuring whitened pebble-dashed walls. It has a smooth-rendered black-painted plinth, architraves, a first-floor sill band, and angle pilasters. The roof is covered with slate and includes a roughcast stack on the left side. The entrance is located on the right side and is accessed by two slate steps. It has a replacement door beneath an earlier overlight, and the entrance surround is pedimented with a fleur-de-lis finial.
The ground floor windows are 12-pane hornless sash windows, while the first-floor windows have 9 panes. On the left gable end, there is a 9-pane sash window on the ground floor and a small steel-framed attic casement window offset to the right. The rear of the house is constructed of rubble stone and features an outshut on the left side. The main range also includes a 9-pane hornless sash window on the right side of the first floor. The property has not been inspected.
Local climate
Plas Porth Uchaf sits in a wetter-than-average part of the UK, with an average of 1,100 mm of rain a year. This makes it wetter than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 76% of listed buildings.
It experiences an average of 34 freeze-thaw cycles a year, fewer than 51% of listed buildings. Of these, 18 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 — 2 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
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