123 Mostyn Street is a Grade II listed building in the Conwy local planning authority area, Wales. First listed on 6 June 2001. Commercial building.
123 Mostyn Street
- WRENN ID
- final-cinder-tallow
- Grade
- II
- Local Planning Authority
- Conwy
- Constituency
- Bangor Aberconwy MP: Claire Hughes (Lab)
- Country
- Wales
- Date first listed
- 6 June 2001
- Type
- Commercial building
- Address
- 123 Mostyn Street, Llandudno, LL30 2PE
- OS grid reference
- SH 780 825
- Coordinates
- 53.32592, -3.83189
- Source
- Cadw listing
Description
Nos 121 and 123 Mostyn Street in Llandudno are Italianate style buildings that stand four storeys tall and feature two windows on the front elevation. The buildings have a hipped slate roof and are constructed of stucco, adorned with a cornice that includes modillions and dentils, as well as a frieze decorated with quatrefoils and quoins. The top floor has two square-headed sash windows set in architraves. The second floor features two camber-headed sash windows, also in architraves, which have keystones. On the first floor, there are two three-light windows with cornices.
The south-facing elevation has three windows, including one that faces North Parade, and maintains the same architectural style. The first floor here has a central window with two round-headed lights, flanked by pilasters and topped with a cornice, while the outer bays feature canted three-light bay windows. The ground floor consists of shopfronts and includes a verandah supported by iron columns with capitals and spandrils, along with an eaves band.
Local climate
123 Mostyn Street 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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- 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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