139 Mostyn Street is a Grade II listed building in the Conwy local planning authority area, Wales. First listed on 16 March 1976. Bridge. 1 related planning application.

139 Mostyn Street

WRENN ID
eternal-grate-spring
Grade
II
Local Planning Authority
Conwy
Constituency
Bangor Aberconwy MP: Claire Hughes (Lab)
Country
Wales
Date first listed
16 March 1976
Type
Bridge
Address
139 Mostyn Street, Llandudno, LL30 2PE
OS grid reference
SH 780 826
Coordinates
53.32655, -3.83237
Source
Cadw listing

Also on this page: sale history · EPC · related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

139 Mostyn Street is a three-storey and attic building, likely dating from the late 19th century. It has a slate gabled roof and is faced with pebbledash cladding. Two box dormers project from the roof. A moulded eave cornice runs around the top of the building. The second floor has two windows with simple, painted architraves, now fitted with modern glazing. Two canted bay windows with sash windows are on the first floor. A modern restaurant occupies the ground floor front, and to the right-hand side is a round-headed doorway with rusticated detailing, a three-panelled door, and a plain fanlight. A cast-iron verandah, consisting of three bays with columns and spandrils, extends across the front of the ground floor.

Local climate

139 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 2 transactions since 2018
  • Related listed building consents — 1 application
  • 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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