Rock House is a Grade II* listed building in the Powys local planning authority area, Wales. First listed on 19 July 1950. A Victorian House.
Rock House
- WRENN ID
- sleeping-keystone-aspen
- Grade
- II*
- Local Planning Authority
- Powys
- Constituency
- Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
- Country
- Wales
- Date first listed
- 19 July 1950
- Type
- House
- Period
- Victorian
- Address
- Rock House, Montgomery, SY15 6PA
- OS grid reference
- SO 221 964
- Coordinates
- 52.56034, -3.14927
- Source
- Cadw listing
Description
Rock House is a Grade II* listed house built of red brick in Flemish bond, featuring a slate hipped roof and a large red brick chimney on the left roof slope, with another chimney at the rear right. The house stands tall at three storeys and an attic, with a four-bay front that includes narrower windows in the right bay. It has four sloping eaves dormers that contain sash windows, three with eight panes and one narrower dormer with six panes. The eaves are dentilled brick, and the openings on the first and second floors have cambered heads with 16-pane sash windows, except for the right bay, which has narrow 12-pane sashes.
On the ground floor, a modern garage entry has replaced the 19th-century shopfront. There is a notable timber columned porch with two front columns, pilaster responds, and a corniced entablature, leading to a cambered-headed doorway that features a six-panel door with the top four panels glazed. To the right, between the third and fourth bays, is a later 19th-century or early 20th-century canted three-light bay window with 2-4-2-pane horned sash glazing and a moulded cornice.
To the right of the main house is a two-storey, one-bay wing constructed of rubble stone with brick courses beneath the eaves, a slate roof, and a brick chimney at the north end. This wing has a brick cambered-headed window on each floor, with a renewed two-light window below and a 16-pane horned sash window above.
The left side elevation is shared with Llwyn Cottage, with only the right bay being part of Rock House. The first and second floors feature similar 16-pane sash windows and an 8-pane eaves dormer.
The interior has not been fully inspected, but the ground floor includes a narrow entrance hall with a mid-18th-century staircase featuring turned column-on-vase balusters, a moulded rail, and thick turned column-and-vase newels. A narrow room to the right has two squared beams and a two-panel door on the back wall.
Local climate
Rock House receives an average of 860 mm of rain a year. This makes it wetter than 61% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 55% of listed buildings.
It experiences an average of 45 freeze-thaw cycles a year, more than 86% 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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