10 Holywell Terrace is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 13 April 1977. House. 1 related planning application.

10 Holywell Terrace

WRENN ID
roaming-steel-bistre
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
13 April 1977
Type
House
Address
10 Holywell Terrace, Caernarfon, LL55 2AP
OS grid reference
SH 482 626
Coordinates
53.13946, -4.26936
Source
Cadw listing

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

Description

This is a terrace of six single-fronted, two-storey houses, numbered 2-12 Holywell Terrace. The houses are built of square coursed rubble stone with graded slate roofs, although the slates on number 12 have been replaced with thinner, square slates. The stacks are roughcast, except for a brick stack on the left side of number 12. Each property’s doorway, located on the right side, features a round head; the individual stones (voussoirs) of the arch are visible at number 12 but are concealed by render on the other houses. Each doorway has a painted tympanum above a replaced door. The windows have stone lintels in the lower storey and are placed beneath the eaves in the upper storey. The original windows have been replaced with mainly small-pane, top-hung casements. The right gable end of number 2 has been pebble-dashed and includes an external stack. The left gable end of number 12 is of rubble stone. Rear extensions have been added to the properties. The terrace belongs to the group 2-12 Holywell Terrace.

Local climate

10 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 — 3 transactions since 2002
  • 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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Nearby listed buildings

  1. 8 Holywell Terrace Grade II 4 m
  2. 12 Holywell Terrace Grade II 5 m
  3. 6 Holywell Terrace Grade II 7 m
  4. 4 Holywell Terrace Grade II 12 m
  5. 2 Holywell Terrace Grade II 16 m
  6. Church Hall Grade II 40 m
  7. Tanycoed Grade II 62 m
  8. Garreg Wen Grade II 113 m
  9. 1 Tithebarn Street Grade II 114 m
  10. 3 Tithebarn Street Grade II 115 m