4 Holywell Terrace is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 13 April 1977. Terraced houses.

4 Holywell Terrace

WRENN ID
tilted-spandrel-primrose
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
13 April 1977
Type
Terraced houses
Address
4 Holywell Terrace, Caernarfon
OS grid reference
SH 482 626
Coordinates
53.13941, -4.26952
Source
Cadw listing

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

Description

4 Holywell Terrace is part of a terrace of six single-fronted, two-storey houses constructed from square coursed rubble with graded slate roofs. The roof of No 12 has been replaced with thin square slates, and the houses feature roughcast stacks, except for a brick stack on the left side of No 12. Each property has a doorway on the right with a round head; the voussoirs are exposed on No 12 but concealed by render on the other houses. Above the replaced doors, there are painted tympanums. The windows in the lower storey have stone lintels, while those in the upper storey are located beneath the eaves. The original windows have been replaced with mainly small-pane top-hung casements. The right gable end of No 2 is pebble-dashed and has an external stack, while the left gable end of No 12 is made of rubble stone. There are additions at the rear of the terrace. This group of houses is located at 2-12 Holywell Terrace.

Local climate

4 Holywell 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 2 transactions since 2001
  • 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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  1. 2 Holywell Terrace Grade II 4 m
  2. 6 Holywell Terrace Grade II 5 m
  3. 8 Holywell Terrace Grade II 9 m
  4. 10 Holywell Terrace Grade II 12 m
  5. 12 Holywell Terrace Grade II 17 m
  6. Church Hall Grade II 28 m
  7. Tanycoed Grade II 51 m
  8. Garreg Wen Grade II 104 m
  9. 1 Tithebarn Street Grade II 105 m
  10. Gates and gate piers at entrance to Uxbridge Square Grade II 106 m