17 High Street is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 11 March 1981. Bridge.

17 High Street

WRENN ID
woven-postern-jet
Grade
II
Local Planning Authority
Powys
Constituency
Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
Country
Wales
Date first listed
11 March 1981
Type
Bridge
Address
17 High Street, Welshpool
OS grid reference
SJ 222 076
Coordinates
52.66058, -3.15139
Source
Cadw listing

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

Description

17 High Street is a striking urban building that dates back to at least the early 17th century. Originally, this site was occupied by a poor tenement known as Chelsea Barracks. The building's unconventional form and detailed character suggest it may have been intended for institutional use, although it now functions as a pair of private houses.

The exterior features rough local limestone rubble and a slate roof supported by a modillion eaves cornice, with brick gable end axial stacks. The building is three storeys high and has a four-window range, with a passage entrance located to the right of the centre. Number 17 is accessed from this passage, while the doorway to Number 18 is at the far right, which disrupts the otherwise regular alignment of openings. There is a disused passage entry corresponding to that of Number 17. The doors are incised 8-panel types with overlights, set in an architrave that features a raised diamond motif in the entablature and mutules on the cornice hood. The round-arched passage entry leads to wide three-light mullioned and transomed windows with small panes and cambered stone voussoir heads on the ground and first floors, along with similar lower mullioned windows in the attic storey.

Inside Number 17, there is a steep early 19th-century staircase running up the centre of the house. Each floor has two rooms at the front (the first floor has been modified to create one large room) and a large and small room at the rear. Access to these rooms is directly off the staircase, which is an unusual arrangement. The small rear room and the upper front room are approached via a small landing, while the rear large room is accessed via a secondary flight of stairs. The second front room can only be reached through the first front room. The roof truss is of an unusual type, featuring a king-post with chamfered joints and two pairs of braces that are cross-braced to both the king-post and the tie-beam.

Local climate

17 High Street 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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