7 Segontium Terrace is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 3 May 2002. House.

7 Segontium Terrace

WRENN ID
proud-spindle-vetch
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
3 May 2002
Type
House
Address
7 Segontium Terrace, Caernarfon
OS grid reference
SH 479 626
Coordinates
53.13888, -4.27387
Source
Cadw listing

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

Description

7 Segontium Terrace is a late Georgian house that stands three storeys high and features two bays. The exterior is finished with scribed stucco walls and has a slate roof with shallow bracketed eaves. To the left, there is a 20th-century brick chimney stack. The entrance is located in the right-hand bay and consists of a panelled door with a plain overlight, which likely replaced an original round-headed overlight. The windows are four-pane horned sashes, with the upper storey windows being shorter. The rear wall is roughcast.

Local climate

7 Segontium Terrace 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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  • 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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