Ty Mawr is a Grade II listed building in the Monmouthshire local planning authority area, Wales. First listed on 22 June 2000. Farmhouse.

Ty Mawr

WRENN ID
inner-sentry-tarn
Grade
II
Local Planning Authority
Monmouthshire
Constituency
Monmouthshire MP: Catherine Fookes (Lab)
Country
Wales
Date first listed
22 June 2000
Type
Farmhouse
Address
Ty Mawr, Llantrissent/Llantrisant, Usk, Llantrisant Fawr
OS grid reference
ST 391 970
Coordinates
51.66891, -2.88149
Source
Cadw listing

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

Description

Ty Mawr is a farmhouse built of yellow-washed rubble stone, featuring a close-eaved slate roof that is hipped at the left end. It has brick stacks on the ridge and at the right end. The building is two storeys high and has a four-window range. On the first floor, there are three narrow 6-pane sash windows to the right of the ridge stack and one to the left, above a porch. The windows have timber lintels.

On the ground floor, the left side has a timber cross window and a half-glazed door located in a gabled porch made of painted rubble stone. To the right, there is a pair of large 19th-century 18-pane sash windows separated by a brick pier, along with a door in a broad painted rubble stone porch that also features a 6-pane window. The porch is plastered on the inside and includes stone seats, a painted grained door with two large panels and two glazed panels. The heavy ovolo-moulded frame may date from the 19th century. All windows have stone sills, and the right end wall is colourwashed and windowless.

The left end of the farmhouse has a pair of casement windows on the first floor and a gabled eaves dormer. The rear left side is obscured by 20th-century farm buildings that are built against a single-storey outbuilding at right angles to the house. This outbuilding is open at the front and has a rubble stone rear and a slate roof. To the right of this, the rear wall of the house features one first-floor casement window.

The kitchen, which was not fully accessible during the survey, has two heavy beams, a large fireplace with a baking oven to the left, and a door to the right with a stone chamfered surround. The details in the main part of the house appear to be from the 19th century.

Local climate

Ty Mawr receives an average of 890 mm of rain a year. This makes it wetter than 66% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 66% of listed buildings.

It experiences an average of 41 freeze-thaw cycles a year, more than 78% of listed buildings. Of these, 18 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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  • 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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  1. Outbuilding at Ty Mawr Grade II 38 m
  2. Tribwthin Grade II 116 m
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  4. Lychgate to Parish Church Grade II 131 m
  5. Churchyard Cross Grade II 157 m
  6. Royal Oak Grade II 196 m
  7. Church Farmhouse Grade II 270 m
  8. The Cwm Grade II* 431 m
  9. Church of Saint Llywel Grade II 1.5 km
  10. Great House Grade II 1.6 km