Tynllwyn Farmhouse is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 25 April 1950. Farmhouse.

Tynllwyn Farmhouse

WRENN ID
blind-jade-spring
Grade
II
Local Planning Authority
Powys
Constituency
Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
Country
Wales
Date first listed
25 April 1950
Type
Farmhouse
Address
Tynllwyn Farmhouse, Groespluan, Welshpool
OS grid reference
SJ 215 086
Coordinates
52.6695, -3.16164
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

Tynllwyn Farmhouse is a mid-19th century house, dated 1861, which likely underwent a significant remodelling of an earlier structure, as indicated by the Tithe Map showing a farm on this site in 1840. The front gables appear to have been raised, and there are hornless sash windows at the rear.

The exterior features Flemish-bond brickwork with slate roofs and plain projecting eaves. The house has a two-storey, symmetrical cruciform plan with advanced paired gables on the east-facing elevation, and a central entrance located between them. The doorway has been renewed and is set within a Doric porch. Flanking windows and three windows above are all 4-pane sashes with moulded architraves. The gable apexes display the date and initials T.W.H. in shields. To either side of the main gables are shallow wings, each featuring similar 4-pane sash windows on the east elevation; the north wing has a 12-pane sash window on the ground floor and a 4-pane sash above. Both wings have rear wall stacks. The main gables are complemented at the rear by a wide wing, which includes a hornless 16-pane sash window with a flat arched brick head on each floor.

Inside, the layout centers around a hall with a fine 18th-century style staircase featuring a curved flight and turned balusters, located beyond a moulded archway.

Overall, Tynllwyn Farmhouse is a notable example of a well-detailed mid-19th century farmhouse that retains much of its original character.

Local climate

Tynllwyn Farmhouse receives an average of 870 mm of rain a year. This makes it wetter than 64% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 50% of listed buildings.

It experiences an average of 40 freeze-thaw cycles a year, more than 77% of listed buildings. Of these, 20 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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