Ty Mawr is a Grade II listed building in the Conwy local planning authority area, Wales. First listed on 28 July 1997. A C16 House.
Ty Mawr
- WRENN ID
- solitary-tin-autumn
- Grade
- II
- Local Planning Authority
- Conwy
- Constituency
- Clwyd North MP: Gill German (Lab)
- Country
- Wales
- Date first listed
- 28 July 1997
- Type
- House
- Address
- Ty Mawr, Llysfaen, LL29 8UE
- OS grid reference
- SH 884 775
- Coordinates
- 53.28347, -3.67465
- Source
- Cadw listing
Description
Ty Mawr is a tall, storeyed end chimney house built from local limestone rubble, which was previously rendered, and features a renewed slate roof. The chimneys project from the building and have coped gables, with renewed capping to the stacks and simple weathercoursing. The front of the house has three windows and a near-centre entrance that is accessed through a modern porch made of rubble and slate. The entrance includes glazed outer doors and a newly-introduced 9-panel mid-Victorian pine door, with the upper panels being glazed. The windows are slightly recessed 30-pane sash windows that reflect a second-quarter 19th-century style, although they are all modern replacements.
To the right, there is a slightly recessed modern addition that includes a porch similar to the main entrance and a small-pane window above. At the rear, there is another storeyed modern addition with a flat roof and modern windows, along with a small-pane window on the rear of the primary block to the right, which is consistent with the earlier style.
Inside, the former hall to the right of the entrance features heavily-moulded main cross-beams that date from the third-quarter of the 16th century. These beams are supported by stone corbels at the wall and hold up finely stopped-chamfered joists, with a chamfered bressummer above a large gable end fireplace. The former parlour to the left has similar cross-framing, which is interrupted by later partitioning. There is also a further moulded beam in the upper chamber, which was formerly open to the roof. A stopped-chamfered entrance and chamfered ceiling joists indicate a 17th-century alteration. The roof is a three-bay structure with two arched-braced collar trusses decorated with quatrefoil and trefoil motifs; the truss on the right, at the hall end, was originally a partition truss with evidence of a post-and-panel screen below.
Local climate
Ty Mawr sits in a wetter-than-average part of the UK, with an average of 1,050 mm of rain a year. This makes it wetter than 85% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 70% of listed buildings.
It experiences an average of 31 freeze-thaw cycles a year, fewer than 63% of listed buildings. Of these, 16 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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- No EPC on record for this property
- Sale history — 8 transactions since 2005
- No related consent applications matched
- 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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