9-10 Castle Ditch is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 22 May 1967. House, shop. 1 related planning application.
9-10 Castle Ditch
- WRENN ID
- noble-corner-frost
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 22 May 1967
- Type
- House, shop
- Address
- 9-10 Castle Ditch, Walled Town, Caernarfon, LL55 2AU
- OS grid reference
- SH 478 627
- Coordinates
- 53.13982, -4.27643
- Source
- Cadw listing
Description
9-10 Castle Ditch is a Grade II listed building that was originally two premises designed to appear as one. It features a Georgian house and shop, standing three storeys high with three bays. The exterior is finished with scribed roughcast walls, a slate roof, and a brick stack on the left side.
On the lower storey, there is a well-detailed mid-20th century shop front projection, which is continuous with No 11. This shop front includes wood-mullioned and transomed windows, topped with a dentilled cornice. The middle storey has renewed 12-pane horned sash windows set in architraves, while the upper storey features similar 9-pane sash windows. The upper storey windows are complemented by a sill band.
The rear wall is also roughcast and includes a narrow 2-pane sash window located centrally in the middle storey.
No 9 retains its original staircase at the rear, consisting of a series of parallel flights. Beneath the projecting shop fronts, there are basement steps leading to a surviving basement sash window for No 9. This area leads to segmental brick-vaulted chambers with limewashed walls and cobbled floors, situated beneath the pavement.
Local climate
9-10 Castle Ditch 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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