Courtenay's Bistro is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 29 May 1968. Townhouse.

Courtenay's Bistro

WRENN ID
ragged-oriel-summer
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
29 May 1968
Type
Townhouse
Address
Courtenay's Bistro, 9 Segontium Terrace, Including Forecourt Railings, Caernarfon
OS grid reference
SH 479 625
Coordinates
53.13879, -4.27379
Source
Cadw listing

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

Description

Courtenay's Bistro is a Georgian house that stands three storeys tall and features three bays. The front is rendered, and it has a slate roof. The openings are offset to the left side. The central doorway is framed by a doorcase with fluted pilasters and plain consoles supporting an entablature. The door itself is a fielded panel design with radial-glazed lights. The central bay has blind windows, while the outer bays contain windows that have been replaced in their original openings, with the upper storey windows being shorter.

In front of the basement steps, there are iron railings topped with spear finials. The basement includes a small-pane window on the right, a blocked opening on the left, and a doorway in the central bay. The rear wall of the building is roughcast.

Local climate

Courtenay's Bistro sits in one of the wettest parts of the UK, with an average of 1,370 mm of rain a year. This makes it wetter than 97% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 98% of listed buildings.

It experiences an average of 20 freeze-thaw cycles a year, fewer than 78% of listed buildings. Of these, 9 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 2003
  • 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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