20 Post Office Terrace is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 8 February 1999. Terraced cottages.
20 Post Office Terrace
- WRENN ID
- iron-spire-bone
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 8 February 1999
- Type
- Terraced cottages
- Address
- 20 Post Office Terrace, Abererch, Pwllheli, Llannor
- OS grid reference
- SH 398 366
- Coordinates
- 52.90338, -4.3832
- Source
- Cadw listing
Description
20 Post Office Terrace is a row of wide-fronted terraced cottages built in the 19th century. They are constructed from coursed squared finely joined rubble and topped with slate roofs. The cottages feature large transverse stacks on alternate party walls. Each cottage has a single window and door, with the front doors alternating sides. There is a small horizontally sliding sash window with small panes on each floor, set into deep painted reveals, and long slate lintels above the ground floor openings, all aligned. The margin-glazed door may be original, and the cottages retain their original windows.
Local climate
20 Post Office Terrace sits in one of the wettest parts of the UK, with an average of 1,670 mm of rain a year. This makes it wetter than 99% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 99% of listed buildings.
It experiences an average of 4 freeze-thaw cycles a year, fewer than 98% of listed buildings. Of these, 1 follows 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 2019
- 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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