Gwalchmai Tollhouse is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 1 August 1952. Toll house. 1 related planning application.
Gwalchmai Tollhouse
- WRENN ID
- blind-sill-acorn
- Grade
- II
- Local Planning Authority
- Isle of Anglesey
- Constituency
- Ynys Môn MP: Llinos Medi (PC)
- Country
- Wales
- Date first listed
- 1 August 1952
- Type
- Toll house
- Address
- Gwalchmai Tollhouse, Trewalchmai
- OS grid reference
- SH 398 761
- Coordinates
- 53.25772, -4.40176
- Source
- Cadw listing
Description
Gwalchmai Tollhouse is an octagonal, two-storey toll house that features a symmetrical design with single-storey wings on the northeast and southeast sides. The building is constructed of coursed masonry, with the first floor rendered. It has a slate roof with projecting eaves, while the wings are topped with roofs made of old small slates that are heavily grouted. The central stack of the octagon is complemented by gable end stacks on each wing, each topped with rendered caps. The windows are slightly recessed and fitted with modern casements. The upper storey of the octagon has blind recesses on all sides except for the face directly above the doorway, which faces west.
Local climate
Gwalchmai Tollhouse sits in a wetter-than-average part of the UK, with an average of 1,040 mm of rain a year. This makes it wetter than 84% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 92% of listed buildings.
It experiences an average of 10 freeze-thaw cycles a year, fewer than 91% 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 0.2°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
- No sale records on file
- Related listed building consents — 1 application
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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