Garden Walls and Well House at Bachymbyd Fawr is a Grade II listed building in the Denbighshire local planning authority area, Wales. First listed on 18 August 1999. Garden walls, well house.

Garden Walls and Well House at Bachymbyd Fawr

WRENN ID
forbidden-portal-kestrel
Grade
II
Local Planning Authority
Denbighshire
Constituency
Clwyd East MP: Becky Gittins (Lab)
Country
Wales
Date first listed
18 August 1999
Type
Garden walls, well house
Address
Garden Walls and Well House at Bachymbyd Fawr, Llanrhaeadr, Llanynys
OS grid reference
SJ 093 610
Coordinates
53.13907, -3.3569
Source
Cadw listing

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

Description

The garden walls and well house at Bachymbyd Fawr date to the 17th century and form part of the historic gardens. The walls are constructed of local limestone rubble with rubble coping above a rough stringcourse. They begin on the southeastern approach to the main house and join a later rubble gate pier. The first section runs northeast from the pier for approximately 15 metres, descending in three stepped-down sections from roughly 3 metres to 1.7 metres in height; small slits with inner splays are visible along this length. This section has been incorporated as the rear wall of a 20th-century garden cottage. Adjacent to this is the well house. The wall acts as a revetment on this side, rising to a maximum height of 1.5 metres on the garden side and approximately 4 metres on the lower side. Beyond the well house, the wall continues for another 15 metres, featuring seven equally-spaced, contemporary bee garth niches. It then turns right and continues for a further 7 metres, before ending; two similar niches are present along this final stretch.

The well house is a two-storey square projecting tower. The lower stage is of limestone rubble, while the upper section is of squared and coursed brown sandstone with a limestone rubble rear wall. The roof is pitched and has coped and kneelered gable parapets at the front and rear. A triangular-headed arch, partly boarded and constructed with rough-dressed voussoirs, is present on the front face of the lower stage, serving as the outlet for a natural spring housed within the structure. The upper stage has an ocular window on each outer side, with a further oculus in the front gable apex; all are topped with moulded and returned labels, and those facing the front retain iron bird bars. The rear (garden) side has a shouldered, Tudor-arched entrance of brown sandstone, with a square open light above.

The well house retains its original roof structure, with two tiers of purlins. The walls are lime-hair plastered and retain layers of yellow ochre limewash, with the earliest layer appearing to be the original finish. The floor is modern and boarded.

Local climate

Garden Walls and Well House at Bachymbyd Fawr sits in a wetter-than-average part of the UK, with an average of 1,010 mm of rain a year. This makes it wetter than 81% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 51% of listed buildings.

It experiences an average of 39 freeze-thaw cycles a year, more than 74% of listed buildings. Of these, 22 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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