128 Mostyn Street is a Grade II listed building in the Conwy local planning authority area, Wales. First listed on 16 March 1976. House.

128 Mostyn Street

WRENN ID
twisted-brass-nightshade
Grade
II
Local Planning Authority
Conwy
Constituency
Bangor Aberconwy MP: Claire Hughes (Lab)
Country
Wales
Date first listed
16 March 1976
Type
House
Address
128 Mostyn Street, Llandudno, LL30 2SW
OS grid reference
SH 779 827
Coordinates
53.32714, -3.83329
Source
Cadw listing

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

Description

128 Mostyn Street is a two-storey house with a basement, built in stucco and featuring a parapet and a slate roof. The first floor has two 12-pane sash windows. On the ground floor, to the left, there is a splayed bay window with small-pane sash glazing, while a casement window has replaced the sash window below at the basement level. To the right, steps lead up to a doorway with a round-headed entrance that has a moulded head supported on consoles, and a plain semi-circular overlight above.

Local climate

128 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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  • 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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  6. 3 Tudno Street, including forecourt walls & piers Grade II 19 m
  7. 4 Tudno Street, including forecourt walls & piers Grade II 25 m
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