100 Mostyn Street is a Grade II listed building in the Conwy local planning authority area, Wales. First listed on 6 June 2001. Shop.

100 Mostyn Street

WRENN ID
late-arch-bramble
Grade
II
Local Planning Authority
Conwy
Constituency
Bangor Aberconwy MP: Claire Hughes (Lab)
Country
Wales
Date first listed
6 June 2001
Type
Shop
Address
100 Mostyn Street, Llandudno
OS grid reference
SH 780 825
Coordinates
53.32581, -3.83242
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

This building, located at 100 Mostyn Street, is a shop constructed from yellow stone with slate roofs and sash glazing. It stands three stories tall and features a four-window front. The design includes a toothed cornice, and at the second floor level, the sashes are set behind 2-light openings that are separated by freestanding columns, with a ropemoulding serving as a string course. On the first floor, there are broad Gothic arched windows, which have rock-faced masonry above and are set back between piers that have floral capitals and bracketed sills. The shopfront has been modernized.

Local climate

100 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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  3. 2 Gloddaeth Street Grade II 19 m
  4. 4 & 6 Gloddaeth Street Grade II 28 m
  5. 125 Mostyn Street, including verandah Grade II 37 m
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  8. 121 Mostyn Street, including verandah Grade II 40 m
  9. 8 Gloddaeth Street Grade II 42 m
  10. 129 Mostyn Street Grade II 45 m