11 Castle Street is a Grade II listed building in the Denbighshire local planning authority area, Wales. First listed on 16 May 1978. House. 1 related planning application.

11 Castle Street

WRENN ID
graven-plinth-harvest
Grade
II
Local Planning Authority
Denbighshire
Constituency
Clwyd East MP: Becky Gittins (Lab)
Country
Wales
Date first listed
16 May 1978
Type
House
Address
11 Castle Street, Ruthin, LL15 1DP
OS grid reference
SJ 123 581
Coordinates
53.11357, -3.31042
Source
Cadw listing

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

Description

11 Castle Street is a tall, narrow, two-and-a-half-storey house, likely dating to the 18th century. The house has a roughcast exterior beneath a steeply-pitched slate roof, with a central chimney stack rendered over brick. An open-fronted, flat-roofed porch with trellised sides and a canopy, probably dating to the early 19th century, is positioned to the left of the centre of the facade. The front door is likely original from the 18th century and features fielded panels. The windows are 20th-century wooden casements with quarry glazing above, set within continuous sill bands. The ground and first-floor windows have raised eared surrounds with segmental heads and keystones. The second-floor windows are located within gabled half-dormers, featuring timber struts to the gables. A cellar opening is visible on the right-hand side. The south gable end includes a small 2-light attic window, adjacent to the adjoining property at No. 13. The rear of the property, partially visible, displays small-pane windows to the upper storey, a corner stack to the left, and flat-roofed blocks below. The interior of the house has not been inspected.

Local climate

11 Castle Street sits in a wetter-than-average part of the UK, with an average of 960 mm of rain a year. This makes it wetter than 75% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 60% of listed buildings.

It experiences an average of 38 freeze-thaw cycles a year, more than 72% of listed buildings. Of these, 21 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
  • 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. 13 Castle Street Grade II 9 m
  2. 9 Castle Street including forecourt railings Grade II 14 m
  3. 15 Castle Street Grade II 16 m
  4. 1 Record Street Grade II 19 m
  5. Plas yn Dre Grade II 25 m
  6. Sir John Trevor House, including N Wing Grade II 25 m
  7. Nantclwyd House Grade I 25 m
  8. Gorphwysfa (former Conservative Club) Grade II* 34 m
  9. 14 Castle Street including forecourt railings Grade II 36 m
  10. Colomendy Grade II 38 m