15-17 Bangor Street is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 31 March 1983. Shop, dwelling. 5 related planning applications.

15-17 Bangor Street

WRENN ID
pitched-spandrel-jackdaw
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
31 March 1983
Type
Shop, dwelling
Address
15-17 Bangor Street, Caernarfon, LL55 1AT
OS grid reference
SH 479 628
Coordinates
53.14142, -4.27426
Source
Cadw listing

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

Description

The building comprises a pair of three-storey, two-window shops with living accommodation above. It dates from the 18th century, with alterations in subsequent periods. The front walls are rendered, with roofs covered in thick slates and dentilled eaves. Number 17 is slightly higher than Number 15, and features a roughcast stack on the front roof slope between the two properties. A skylight has been added to the rear of Number 15. The middle floor windows are 12-pane hornless sashes, while those on the upper floor are 9-pane hornless sashes. At ground floor level, Number 15 has a front elevation featuring panelled pilasters leading to a doorway on the right side, a replaced stallboard, a two-light plate glass window, and a fascia with a dentilled cornice that projects above the doorway, where consoles are decorated with carved heads. The doorway itself has a replaced door and overlight. Number 17 retains an earlier cornice but features a former doorway to the left, now infilled as part of an inserted shop window. A further doorway, with a replaced door, is located to the right. The rear elevation of Number 15 is rubble stone with replaced windows, while the rear elevation of Number 17 has been enlarged, also with replaced windows.

Local climate

15-17 Bangor 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.
  • Sale history — 2 transactions since 2018
  • Related listed building consents — 5 applications
  • 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. 13 Bangor Street Grade II 5 m
  2. 22 Bangor Street Grade II* 24 m
  3. 24 Bangor Street Grade II 25 m
  4. 20 Bangor Street Grade II 25 m
  5. 18 Bangor Street Grade II 27 m
  6. 16 Bangor Street Grade II 30 m
  7. The Carlton Grade II 32 m
  8. 6 Bangor Street Grade II 50 m
  9. 4 Bangor Street Grade II 54 m
  10. Caernarfon Royal Town Council Offices, including 10 Bangor Street Grade II* 56 m