25 High Street is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 31 March 1983. Townhouse. 1 related planning application.

25 High Street

WRENN ID
far-loggia-myrtle
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
31 March 1983
Type
Townhouse
Address
25 High Street, Walled Town, Caernarfon, LL55 1RH
OS grid reference
SH 478 628
Coordinates
53.14084, -4.2762
Source
Cadw listing

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

Description

25-27 High Street is a pair of shops with houses above, featuring a roughcast front with rusticated quoin strips and a slate roof that has roughcast end stacks on the front slope. The building stands three storeys high and has two windows, with No 27 being narrower. The windows in the middle and upper storeys have been replaced and are set within moulded architraves that include sill bands. The replacement windows in the upper storey are positioned lower than the original windows, which were located directly beneath the eaves.

The lower storey has shop fronts, with No 25 likely dating from the late 19th century. This shop front has fluted pilasters and a plain fascia that features a pediment above the central doorway. The replaced double half-lit doors are situated beneath a thin segmental arch, with the moulding continuing as nook shafts. The flanking windows are two-light with arched heads and thin turned mullions topped with capitals. The stallboard is boarded over. No 27 has a replaced half-lit door to the left under an overlight, and a plate glass window to the right, both set in original openings with moulded architraves. This building is part of a group that includes 25-27 High Street.

Local climate

25 High Street 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.
  • No sale records on file
  • 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. 27 High Street Grade II 5 m
  2. 23 High Street Grade II 8 m
  3. 29 High Street Grade II 12 m
  4. Tafarn y Werin Grade II 14 m
  5. 28 High Street Grade II 18 m
  6. 2 Northgate Street Grade II 28 m
  7. 34a High Street Grade II 29 m
  8. Castle Chambers Grade II 29 m
  9. Telephone Call-box outside The Crown public house Grade II 33 m
  10. Mantell Gwynedd Grade II 34 m