11-11a is a Grade II listed building in the Denbighshire local planning authority area, Wales. First listed on 16 May 1978. Commercial.

11-11a

WRENN ID
floating-cellar-plum
Grade
II
Local Planning Authority
Denbighshire
Constituency
Clwyd East MP: Becky Gittins (Lab)
Country
Wales
Date first listed
16 May 1978
Type
Commercial
Address
11-11a, Ruthin
OS grid reference
SJ 123 583
Coordinates
53.1149, -3.31105
Source
Cadw listing

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

Description

11-11A is a building featuring rendered and lined walls under slate roofs, set on a high plinth. It has a truncated brick ridge stack on the main range and a tall lateral brick stack on the cross-wing, both with clustered shafts.

No. 11, which is the main range, is two storeys high with two windows. It has a central entrance with a half-glazed panelled door, flanked by large late 20th-century wooden shop windows—four-light on the left and three-light on the right, both with horizontal glazing bars and integral fascias. The upper storey contains two four-pane sash windows.

No. 11A, the cross-wing, features a projecting gabled front and is one-and-a-half storeys tall. It has a three-unit layout with an added bay to the rear, likely from the 20th century. The entrance is on the left side, with a half-glazed panelled door and a four-pane sash window in the centre. The upper storey has a central iron cross-window with diamond glazing in the upper lights. The north side of the range, which is partly visible, has a three-light iron casement with quarry glazing on the left, and a smaller two-light iron window directly above it on the upper storey. An external stack is located to the right, beyond which is a small-pane wooden window on the ground floor and a two-light casement above. To the right, there is a lower stone wing with a doorway and irregularly placed flanking windows.

Inside the cross-wing, there is a narrow stair-hall at the entrance, featuring a straight stair with a beam above that has a segmental-arched soffit, possibly carved later. There are back-to-back fireplaces in the front and central rooms, which are now blocked. The central room has a medium-chamfered cross-beam of 17th-century style, cut off near the fireplace and supported by a corbel, suggesting that the original lateral fireplace was removed and a new back-to-back fireplace was inserted at right angles. Above the top of the stairs, part of a tie-beam truss, also of 17th-century style, is visible. The roof is ceiled at collar level, exposing substantial purlins. The central upper room features a large timber fireplace lintel, with the fireplace itself blocked. There may have been a former doorway to the main range adjacent to the staircase. The interior of the main range has not been seen.

Local climate

11-11a 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.

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