Carreg Lwyd is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 18 July 1997. House.

Carreg Lwyd

WRENN ID
weathered-marble-peregrine
Grade
II
Local Planning Authority
Isle of Anglesey
Constituency
Ynys Môn MP: Llinos Medi (PC)
Country
Wales
Date first listed
18 July 1997
Type
House
Address
Carreg Lwyd, Menai Bridge
OS grid reference
SH 552 722
Coordinates
53.22736, -4.16947
Source
Cadw listing

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

Description

Carreg Lwyd is a large Arts and Crafts style house of distinctive character. It is 2 storeys with attics, rendered white in the upper portion with green slate roof, feathered eaves and painted rendered chimney stacks. The building is strongly asymmetrical, with scattered fenestration and comprises 3 bays. The most prominent features are central gabled bays advanced to both front and rear, and a single storey wing advanced to the front at the right side.

The front elevation is dominated by the advanced central gable with its boldly sweeping catslide roof to the left. The entrance is offset to the left within this gable, set in an ashlar porch with battered piers and a chamfered segmental archway, surmounted by a shaped parapet with ball finials. Immediately left of the porch stands a 4-light mullioned window consisting of 4x10-pane sashes, positioned beneath the catslipe. To its right is a full-height canted bay window with very distinctive small-paned windows to the ground floor. The first floor has transomed windows with small-paned lower lights and smaller-paned upper lights, which form a continuous band with a 3-light oriel window positioned immediately above the porch. A Diocletian window crowns the gable apex. To the left of the gable are paired narrow small-paned sashes on each floor, with a 4-light dormer offset to the right within the roof.

The left hand gable return (south-east elevation) has a distinctive form created by the roof dipping low over the ground floor of the garden front to form an asymmetrical gable. The fenestration is carefully composed: a tripartite small-paned oriel window sits in the gable apex, with mullioned and transomed small-pane sashes either side at first floor level, and a similar window aligned to the ground floor on the right. A 5-sided bay window with small-paned sashes is offset to the left, and a similar window wraps around the left hand angle, forming part of a glazed verandah.

The rear elevation is dominated by the advanced central gable, anchored by a very tall right hand chimney stack. The gable features a full-height canted bay window with small-paned sashes and a leaded apron swept up from the wider 3-light lower window to the narrower 2-light upper window. The upper window is similarly detailed and flanked by small side lights aligned with the upper panes of its sashes. A Diocletian window crowns the apex. To the right of the gable the roof sweeps down over the verandah (now with modern glazed infill), while to the left are an original small-paned sash window to the first floor and other windows which have been renewed.

The right hand gable return (north-west elevation) contains the scullery, which has an inserted window with lower storey 8-pane and upper storey 10-pane sash windows, and a half-glazed door.

Internally, the entrance door opens to an inner porch with mosaic floor and leaded lights. The main hall has a mosaic floor of cream, green and pink tiles arranged in a fan design, and modillioned picture rails. The staircase has battered newels and a moulded handrail on pierced splats interspersed with stick balusters, rising to a window seat in the leaded light bay to the front. Original doors, picture rails and some fire surrounds remain. Other original features include a walk-in china cupboard with original fittings, a pot cupboard and a cold room with slate shelves. The ground floor toilet and cloakroom retain their original tiling and fittings, and the bell system is intact and working.

Local climate

Carreg Lwyd sits in one of the wettest parts of the UK, with an average of 1,210 mm of rain a year. This makes it wetter than 92% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 93% of listed buildings.

It experiences an average of 23 freeze-thaw cycles a year, fewer than 75% of listed buildings. Of these, 11 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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