Llys Llewelyn is a Grade II listed building in the Conwy local planning authority area, Wales. First listed on 19 February 1976. Church.

Llys Llewelyn

WRENN ID
muted-cornice-river
Grade
II
Local Planning Authority
Conwy
Constituency
Bangor Aberconwy MP: Claire Hughes (Lab)
Country
Wales
Date first listed
19 February 1976
Type
Church
Address
Llys Llewelyn, Mount Pleasant
OS grid reference
SH 778 775
Coordinates
53.28073, -3.83348
Source
Cadw listing

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

Description

Llys Llewelyn is a Georgian style, castellated house featuring three bays and a double-pile layout, with two storeys, an attic, and a basement. The building is constructed from snecked rock-faced stone and has a slate roof behind crow-stepped gables, with corbelled eaves and end stacks that have paired rock-faced shafts. The front of the house has its bays grouped towards the centre, with the central bay slightly projecting forward and the outer bays pushed even further forward, all topped with crow-stepped gables that include finials.

The central entrance consists of a half-glazed panel door, which likely replaced an earlier door. The ground and first floors are adorned with 12-pane hornless sash windows set under lintels that feature tripartite keystones. Above the central window on the first floor is a blank freestone shield. The attic windows, which sit on corbelled sills, include small-pane windows with top-hung casements on the left and right, and a recently replaced central window.

Access to the entrance is via slate steps on both the left and right sides, complemented by an iron handrail. Between these steps, there are concrete steps leading to a half-glazed basement door, which is flanked by replacement small-pane basement windows in lightwells. The left gable end of the house is roughcast, while the right gable end is constructed from rubble-stone.

Local climate

Llys Llewelyn 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
  • Sale history — 5 transactions since 1996
  • 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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