Ty'r Allt is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 5 April 1971. House. 3 related planning applications.

Ty'r Allt

WRENN ID
lone-mullion-wind
Grade
II
Local Planning Authority
Isle of Anglesey
Constituency
Ynys Môn MP: Llinos Medi (PC)
Country
Wales
Date first listed
5 April 1971
Type
House
Address
Ty'r Allt, Four Mile Bridge, Rhoscolyn
OS grid reference
SH 279 782
Coordinates
53.27347, -4.58229
Source
Cadw listing

Also on this page: sale history · EPC · related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

Ty'r Allt is a two-storey farmhouse dating from the 18th century. It comprises a three-window main range with a central doorway, the openings being offset to the right. To the left is a lower, two-window block with asymmetrically arranged openings. A single-storey stable is located at the rear, set against the left gable return, with an adjoining pigsty creating a linear range. The building is constructed of rubble masonry and is lime washed. It has a gabled roof covered in small slates, with stone copings and gable stacks; the stack to the left of the main block is larger than the one on the right. The southwest-facing roof has been re-slated using reclaimed Welsh slate. The windows on the main range are slightly recessed and are four-pane sliding sash windows. A modern canted bay with modern glazing is at the right end, and a fixed window is in the fire window position to the left. The block to the left has a glazed French window and first-floor casement windows.

Inside, the kitchen to the left retains a large, slightly cambered bressumer beam over the inglenook fireplace. The house is characterised by a double gable chimney plan and a central entrance and staircase.

Local climate

Ty'r Allt sits in a wetter-than-average part of the UK, with an average of 1,030 mm of rain a year. This makes it wetter than 83% 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 8 freeze-thaw cycles a year, fewer than 93% of listed buildings. Of these, 3 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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  • Full EPC report — heating system, energy costs, size, glazing, construction etc.
  • Sale history — 1 transaction since 2003
  • Related listed building consents — 3 applications
  • 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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