Millbrook House is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 19 November 1998. A Georgian House.
Millbrook House
- WRENN ID
- bitter-granite-barley
- Grade
- II
- Local Planning Authority
- Brecon Beacons National Park
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 19 November 1998
- Type
- House
- Period
- Georgian
- Address
- Millbrook House, the Vale of Grwyney, Powys
- OS grid reference
- SO 239 171
- Coordinates
- 51.84783, -3.10519
- Source
- Cadw listing
Description
Millbrook House is a Georgian-style, five-bay house that stands two storeys tall with an attic. The exterior features rubble stone walls and a roughcast front with raddle, which has some repairs painted pink. The slate roof has an external stack on the left and an end stack on the right, both of which have been replaced with brick. The windows show traces of former architraves and consist of 12-pane hornless sashes. The centrally-placed doorway is framed by a moulded surround and features a six-panel door with an overlight that has Gothick glazing.
To the left gable end, there is a single-storey former stable made of rubble stone, painted cream, with a slate roof. It has a boarded door at the centre of a former full-height opening that is now blocked above the door. To the left of the door is a 12-pane sash window, while to the right is a window that was inserted in the 20th century. The right gable end of the house is pebble-dashed and has a horned sash window inserted in the upper right. The rear wall features a small battered buttress at the left end, and centrally placed are 19th-century two-light casements that provide light to the stairs.
Inside, the central stair hall boasts a full-height open-well stair with turned balusters and a newel, along with a moulded handrail. There are plainer stairs leading to the service rooms in the attic. The ground floor includes two main rooms, where the windows are fitted with panelled shutters, and the panelled doors have moulded surrounds.
Local climate
Millbrook House 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 83% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 75% of listed buildings.
It experiences an average of 48 freeze-thaw cycles a year, more than 89% of listed buildings. Of these, 24 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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