Llanmaes House is a Grade II listed building in the Cardiff local planning authority area, Wales. First listed on 6 October 1977. House.
Llanmaes House
- WRENN ID
- dim-frieze-cobweb
- Grade
- II
- Local Planning Authority
- Cardiff
- Constituency
- Cardiff West MP: Mr Alex Barros-Curtis (Lab)
- Country
- Wales
- Date first listed
- 6 October 1977
- Type
- House
- Address
- Llanmaes House, Michaelston-Super-Ely, St. Fagans
- OS grid reference
- ST 121 768
- Coordinates
- 51.48407, -3.26622
- Source
- Cadw listing
Description
Llanmaes House is a two-storey building with roughcast cladding, smooth render quoins, and window dressings. It features a hipped Welsh slate roof that has been rebuilt and includes two new red brick stacks. The house has symmetrical three-bay elevations, with the north-west elevation showcasing 6 over 6 pane sash windows with glazing bars and stuccoed architraves. The first floor windows have horns, while the ground floor has a window on each side of a modern porch. The south-west elevation also has three bays, with a taller sash window in the center of the first floor bay.
At the eastern end, there were former single-storey service wings, which have been further altered and extended since the listing, including the addition of pool rooms and a swimming pool.
The interior was not available for inspection during the resurvey. However, the 1977 listing description notes that the interior has been altered in the late 19th century and later. One ground floor room retains a semi-elliptical arch on each side of the fireplace, and most of the windows still have their panelled shutters.
Local climate
Llanmaes House sits in a wetter-than-average part of the UK, with an average of 1,110 mm of rain a year. This makes it wetter than 88% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 90% of listed buildings.
It experiences an average of 21 freeze-thaw cycles a year, fewer than 78% of listed buildings. Of these, 8 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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- 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
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