Gerddi Bluog is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 28 April 1952. Farmhouse.
Gerddi Bluog
- WRENN ID
- pitched-courtyard-harvest
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 28 April 1952
- Type
- Farmhouse
- Address
- Gerddi Bluog, Llanfair, Gwynedd
- OS grid reference
- SH 619 308
- Coordinates
- 52.85745, -4.052
- Source
- Cadw listing
Description
Gerddi Bluog is a large building that incorporates the structure of a late 17th century farmhouse, which was extended at the rear by a two-window 19th century wing, creating a T-shaped layout. In the mid-20th century, an L-shaped block was added to the north.
The building is constructed from coursed rubble masonry, featuring large stones as quoins, while the south gable of the 19th century wing is rendered. The openings in the 19th century wing and some windows in the 17th century section have stone lintels, and the windows are fitted with slate sills. The 20th century addition includes large mullioned windows, which the owner believes are made of cast cement rather than stone. The roof is slate with a tiled ridge and slate copings, and there are gable stacks at the west end of the 17th century part and the south gable of the 19th century wing.
The building consists of two main sections with distinct characters. The northern part is more formal, featuring advanced wings flanking a central block that has a central entrance and large windows with nine small paned lights. The main doorway has a Tudor arched head made of raking stones. The southernmost advanced wing is the altered 17th century farmhouse, which is adjacent to the 19th century wing. This section has a more vernacular character, with the entrance offset to the right end of the 19th century wing, featuring a re-set stone lintel inscribed with the date and initials: MP 1667. The windows in this part are horned sashes with 12 and 16 panes.
The interior was modernized during the mid-20th century alterations, but it retains the original central front doorway of the late 17th century farmhouse, with raking stones set in the local style above it.
Local climate
Gerddi Bluog sits in one of the wettest parts of the UK, with an average of 1,490 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 97% of listed buildings.
It experiences an average of 32 freeze-thaw cycles a year, fewer than 60% of listed buildings. Of these, 15 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
Sign in or create a free account to unlock:
- No EPC on record for this property
- No sale records on file
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
Similar buildings
The closest matches to this building from all 493,000 UK listed buildings, by architecture, period and materials.
this building 1 similar nearby listed buildings